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Fast, simple tools for everyday work

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Calculators

Free online calculators for everyday and professional use. Quickly work out BMI, percentages, loans, tips, age, compound interest, and more with clear results.

BMI Calculator
Calculate BMI with metric or imperial units, see healthy weight range, optional waist-to-height ratio context, and save/export progress snapshots.
Equation Solver
Solve linear, quadratic, 2×2, and 3×3 equation systems step by step. Get real or complex roots, determinants, and downloadable worked solutions.
Scientific Calculator
Evaluate scientific expressions with trig/log functions, powers, factorials, DEG or RAD modes, memory controls, and exportable calculation history.
Derivative Calculator
Differentiate polynomial functions of x symbolically using the power rule. Get higher-order derivatives, parse diagnostics, step-by-step working, and point evaluation at chosen x values.
Integral Calculator
Symbolic integral calculator for indefinite and definite polynomial integrals. See antiderivative steps, parse diagnostics, and export integral reports with bound evaluation.
Matrix Calculator
Compute matrix addition, subtraction, multiplication, determinant, inverse, transpose, rank, and RREF for up to 4×4 matrices with exportable results.
Complex Number Calculator
Add, subtract, multiply, divide, conjugate, convert to polar form, compute integer powers and n-th roots of complex numbers with RAD/DEG angle toggle and JSON export.
Triangle Solver
Solve any triangle from common combinations like SSS, SAS, ASA, SSA, or right triangles. Find missing sides, angles, area, and perimeter.
Area & Volume Calculator
Calculate area, perimeter, surface area, and volume for common 2D shapes and 3D solids including circles, rectangles, triangles, spheres, cylinders, cones, and rectangular prisms.

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Converters

Fast and simple conversion tools for files, units, text encodings, currencies, dates, and number systems like HEX, Base64, and Morse code, all running instantly in your browser with no sign-up required.

HEX ⇄ RGB
Convert HEX to RGB and RGB to HEX with live preview. Useful for designers, developers, and anyone working with colors.
URL Encoder / Decoder
Safely encode or decode URLs to make them browser-friendly. Convert special characters and protect links from errors.
Base64 File & Text Converter
Convert files or text to Base64 and Data URI formats, then decode Base64 back into downloadable files directly in your browser with no upload required.
Unit Converter
Convert between units of length, weight, temperature, and more. Simple online conversion calculator.
Shoe Size Converter
Convert men's and women's shoe sizes between US, UK, EU, centimetre, and Japanese systems instantly.
Clothing Size Converter
Convert international clothing sizes for men and women across US, UK, EU, and body measurement ranges.
Belt Size Converter
Enter a waist measurement to calculate the recommended belt length, international letter size, and EU belt number.
Ring Size Converter
Convert ring sizes between US, UK, and EU scales and view the matching inner diameter and circumference in millimetres.
Hat Size Converter
Convert hat sizes between international alpha labels, US fitted sizes, EU numbers, and head circumference measurements.

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Generators

Random and creative generators for passwords, UUIDs, QR codes, barcodes, NanoIDs, Lorem Ipsum, numbers, dice rolls, and word clouds for quick ideas and testing.

Password Generator
Generate strong, secure, random passwords instantly. Choose length, include numbers, symbols, uppercase and lowercase letters.
Hash Generator
Generate MD5, SHA-1, and SHA-256 hashes from text instantly. Secure one-way hashing tool for developers and IT pros.
UUID Generator
Generate v4 UUIDs instantly for free. Unique, random identifiers for software projects, databases, and development.
QR Code Generator
Create QR codes from text or URLs instantly. Download as an image and use for websites, business cards, and marketing.
QR Code Scanner
Scan QR codes instantly using your camera or an uploaded image, directly in your browser. No uploads, no sign-up, and private local decoding for quick results.
Random Number
Generate random numbers between any two values instantly. Great for games, raffles, and quick number picking with a free random number generator.
Lorem Ipsum Generator
Generate placeholder Lorem Ipsum text for designs, documents, and layouts. Choose number of paragraphs or sentences.
Barcode Generator
Generate standards-compliant EAN-13, EAN-8, UPC-A, UPC-E, and Code 128 barcodes. Validate values, auto-calculate check digits, and download SVG or PNG.
NanoID Generator
Generate secure NanoIDs with customizable length and alphabet. Great for developers needing short unique IDs and entropy-friendly defaults.

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Text

Text utilities to format, clean, analyze, and transform text. Includes word counters, case converters, slug generators, diff checkers, and more for writers.

Word Counter
Count words, characters, sentences, paragraphs, unique words, keyword density, and reading or speaking time with configurable speed and targets.
Case Converter
Convert text across uppercase, lowercase, title, sentence, camel, pascal, snake, kebab, and constant case with locale-aware rules, batch mode, and exports.
JSON Formatter
Format, beautify, or minify JSON instantly. Detect errors in your JSON data with live validation and syntax highlighting.
Markdown → HTML
Convert Markdown to clean HTML instantly. Live preview, copy HTML, and check formatting. Perfect for blogs and documentation.
Text Diff
Compare two pieces of text and highlight differences. Great for developers, editors, and document comparison.
Slug Generator
Turn text into clean, SEO-friendly slugs for URLs. Supports kebab-case, lowercase, and safe URL formatting.
Sort Lines
Sort lines alphabetically A-Z or Z-A, remove duplicates, and trim whitespace. Simple online line sorting tool.
Remove Duplicate Lines
Remove duplicate lines from any text and clean whitespace, perfect for tidying lists, logs, CSV columns, and keyword sets before reuse or sharing quickly.
Word Frequency
Paste text and see the most common words with frequency counts. Great for SEO, linguistics, and analysis.

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Accessibility

Accessibility tools to test color contrast, simulate color blindness, and ensure your designs meet WCAG standards for inclusive, user-friendly websites.

Color Contrast Checker
Check color contrast ratios for accessibility. Ensure text and background combinations meet WCAG AA/AAA standards.
Focus Order Checker
Plan and simulate keyboard focus order to meet WCAG AA/AAA requirements. Reorder elements, mark skips, and export reports.
Accessibility Live Region Tester
Experiment with aria-live regions, politeness levels, and atomic updates. Preview how screen readers announce live changes before shipping UI updates.
Color Blindness Simulator
Upload an image and preview how it appears with protanopia, deuteranopia, or tritanopia filters to improve accessible design decisions and color choices.

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Banking

Free online banking and finance tools. Validate and generate IBANs, check SWIFT/BIC codes, verify credit card numbers, and explore financial utilities for international payments.

IBAN Validator / Generator
Validate IBANs with live checksum (MOD 97) and formatting. Generate checksum-valid sample IBANs by country, copy or format in groups of 4.
SWIFT Code Lookup
Free SWIFT code checker to validate and parse SWIFT/BIC codes. Instantly see bank, country, location, and branch details while confirming ISO 9362 format.
SWIFT Bank Directory
Look up the institution behind a SWIFT/BIC code with sample metadata. Validate ISO 9362 structure, view bank names, head offices, and common branch identifiers before wiring funds.
IBAN Component Decoder
Decode IBANs by country to expose bank codes, branch identifiers, and account numbers. Validate MOD 97-10 checksums and link directly to national bank directories for enrichment.
Credit Card Number Generator
Generate Visa, Mastercard, AMEX, Discover, JCB, and Maestro test card numbers with valid prefixes and Luhn checksums.
Credit Card Validator
Validate credit card numbers instantly using the Luhn checksum. Detect card issuer (Visa, MasterCard, AMEX, Discover) and format in groups of 4 for readability.
Bank Account Generator
Generate dummy bank account data for Germany, the Netherlands, Spain, the UK, and the US with real checksum rules applied.
Routing Number Checker
Free ABA routing number checker to validate US bank routing numbers instantly. Confirm 9-digit length, verify the checksum, and catch common errors.
International Routing Validator
Validate UK sort codes, Canadian transit and institution numbers, and Australian BSBs with native checksum logic. Surface bank metadata so you can route payments confidently.

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Identity & IDs

Identity and compliance generators for passports, national IDs, and tax numbers. Produce locale-aware dummy data that meets checksum rules for safe testing.

VIN Decoder
Decode any 17-character VIN to reveal manufacturer details, body information, model year, plant code, and check digit validation in seconds.
VIN Generator
Generate valid VIN numbers with authentic WMIs, correct check digits, and configurable manufacturer selections for QA and automotive integrations. Free VIN generator for testing workflows.
VIN Checker
Verify VIN structure, length, and check digits instantly. Highlight invalid characters, model year mismatches, and manufacturer insights for compliance.
Passport Number Generator
Generate passport numbers for the UK, USA, India, Canada, Australia, and Germany that follow authentic formatting rules.
National ID Generator
Generate national identification numbers with built-in checksum logic for the US, UK, India, Canada, and Spain.
UK NINO Generator
Generate UK National Insurance numbers (NINOs) that follow the official format, exclude restricted prefixes, and use A-D suffix letters for safe testing.
Tax ID Generator
Generate business and taxpayer identifiers with correct checksums for the US, Australia, India, Brazil, and France.

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Statistics & Probability

Statistics and probability calculators for data analysis and homework. Compute descriptive statistics, z-scores, confidence intervals, binomial probabilities, linear regression fits, and more.

Descriptive Statistics Calculator
Paste your data and instantly compute mean, median, mode, variance, standard deviation, quartiles, and box-plot summary values.
Z-Score & Normal Distribution Calculator
Convert raw scores to z-scores and read off normal distribution probabilities, including left-tail, right-tail, and two-tailed p-values from z.
Confidence Interval Calculator
Build confidence intervals for means, proportions, and differences between groups at 80%, 90%, 95%, or 99% confidence levels.
Binomial & Combinatorics Calculator
Compute combinations (nCr), permutations (nPr), and binomial probabilities P(X=k), P(X≤k), and P(X≥k) for discrete probability questions.
Linear Regression Calculator
Fit a linear regression line to (x, y) data, and see the slope, intercept, correlation coefficient, R², and predicted values from the best-fit line.
T-Test & P-Value Calculator
Compute one-sample and two-sample t-tests from summary statistics. Get t statistics, degrees of freedom, and one-sided and two-sided p-values.
Correlation Matrix Calculator
Paste multi-column numeric data and generate a Pearson correlation matrix with basic summary statistics for each variable.
Sample Size Calculator
Calculate the minimum sample size needed for estimating a mean or proportion with a given margin of error and confidence level.

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Colors

Color tools for designers and developers. Convert HEX, RGB, and HSL values, generate gradients, extract palettes from images, and check accessibility contrast.

Color Palette Extractor
Upload an image and extract dominant colors. Generate beautiful palettes for design, branding, or art.
Gradient Generator
Create linear CSS gradients and copy code instantly. Design custom gradients with multiple colors, angles, and directions.
Dark Mode Color Pairs
Build coordinated light and dark theme CSS variables from a single neutral and accent color. Tune contrast and vibrancy then copy the finished tokens in seconds.
RGB ⇄ HSL
Convert colors between RGB and HSL with a live color swatch.
CSS Filter Generator
Design and preview CSS filters including blur, brightness, contrast, grayscale, sepia, saturate, and hue-rotate. Copy the CSS instantly.
Material Palette
Browse Google’s Material Design color palettes. View all shades, copy hex codes instantly, and preview text on background colors.
Flat UI Colors
Browse the Flat UI Colors v1 and v2 palettes. View all swatches and copy hex codes instantly for use in your designs and code.
Image Color Grabber
Upload an image, click to pick colors, and build a palette with HEX and RGB values. Runs in your browser with no sign-up required.

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Dates & Time

Date and time calculators to convert time zones, calculate date differences, countdown to events, work with timestamps, or run stopwatches and timers.

Business Days Calculator
Count working days between two dates, excluding weekends and optional holidays. Ideal for project planning and SLAs.
Work Hours & Overtime Calculator
Total weekly work hours from daily entries, separate overtime, and estimate pay based on an hourly rate and overtime multiplier.
Multi-Zone Meeting Planner
Coordinate meetings across time zones by mapping teammates' working hours and spotting overlapping slots automatically.
Timestamp Converter
Convert Unix timestamps to human-readable dates and back. Supports ISO 8601 and local time conversion.
Date Difference
Calculate the difference between two dates in days, weeks, or months. Fast and accurate date difference tool.
Time Difference
Calculate the exact time between two moments. Enter times or full dates to get hours, minutes, seconds, and a human-readable duration.
Countdown Timer
Create a countdown to any date or time. Useful for events, launches, deadlines, or personal reminders.
Chinese Zodiac Calendar
Discover the Chinese zodiac animal for the current year or any past and future year. Explore element traits, compatibility, career insights, and lifestyle tips for all 12 animals in the lunar calendar.
Date Math
Add or subtract years, months, days, hours, and minutes from a date. Quick online date calculator.

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Design

Visual design utilities to create and preview modern UI styles. Generate neumorphism, glassmorphism, gradients, filters, and ready-to-use CSS for beautiful interfaces.

Responsive Meta Tag Generator
Assemble responsive meta tags for viewport, Open Graph, Twitter Cards, favicons, and manifests. Copy clean HTML head snippets in seconds.
CSS Variable Theme Previewer
Import CSS custom properties to preview light and dark themes, tweak values live, and export polished token sets.
Neumorphism Generator
Generate neumorphic soft UI effects with adjustable shadows, blur, border radius, and inset mode. Copy CSS code instantly.
Glassmorphism Generator
Generate glassmorphism CSS with background transparency, blur, border radius, and frosted glass effects. Copy CSS code instantly.
Button Hover Effects
Design interactive button hover states with border wipe, glow trail, and micro-motion presets. Adjust colors, radius, timing, and copy production-ready CSS.
Flexbox Playground
Experiment with flexbox layouts in real time. Adjust direction, wrapping, alignment, and gaps visually, then copy clean CSS for your own UI layouts.
Container Query Builder
Plan component-level breakpoints, preview how layouts respond to container width changes, and copy production-ready CSS container queries with matching markup.
Clamp() Font Generator
Build fluid typography with ease. Enter min/max font sizes and viewport breakpoints to produce a precise CSS clamp() font-size formula with live preview.
CSS Keyframes
Create multi-step CSS animations with translate, rotate, scale, and opacity controls. Preview the timeline and copy clean keyframe CSS.

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Networking

DNS and networking utilities to look up records, run reverse DNS queries, inspect DNSSEC, and validate infrastructure during migrations and troubleshooting.

DNS Record Lookup
Look up DNS A, AAAA, MX, TXT, CNAME, NS, and DNSSEC records instantly using Google's public resolver.
A Record Checker
Fetch IPv4 A records for any domain to verify hosting changes, check propagation, and troubleshoot routing or DNS misconfigurations with IPs at a glance.
AAAA Record Checker
Check AAAA records to confirm IPv6 addresses published for your domain and diagnose dual-stack issues.
MX Record Checker
List MX records to see which mail exchangers handle email for a domain and validate deliverability setups.
TXT Record Checker
Inspect TXT records for SPF, DKIM, DMARC, and verification tokens on any domain to validate email setups, third-party integrations, and deliverability.
CNAME Record Checker
Run a CNAME lookup to reveal aliases and see how hostnames map to canonical domains, CDNs, and services. Verify routing, redirects, and DNS setups during migrations.
NS Record Checker
List the authoritative name servers for a domain and confirm delegation, helpful for DNS changes, registrar updates, and troubleshooting resolution issues.
SOA Record Checker
Fetch SOA records to review name server, contact, serial, refresh, retry, and expiry values for a zone, useful for DNS change audits and propagation checks.
SRV Record Checker
Query SRV records to map protocols and ports to hostnames for services like SIP, XMPP, LDAP, and more.

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Developers

Handy developer tools for testing, debugging, and generating code. Includes JSON formatters, regex testers, JWT decoders, minifiers, and CSS utilities.

YAML Formatter
Format YAML, convert between YAML and JSON, and validate syntax instantly in your browser with offline support.
JWT Decoder
Decode JWT header and payload safely in your browser. Inspect claims and structure without sending tokens anywhere.
JWT Generator
Create signed JSON Web Tokens with this free JWT token generator. Customize headers and payloads, choose HS256/384/512 HMAC algorithms, and copy the ready-to-use JWT.
Cron Expression Builder
Visually craft cron expressions with presets, interval selectors, and quick toggles. Copy the expression and preview the next scheduled runs instantly.
Cron Parser
Parse cron expressions and preview next run times. Useful for devs managing scheduled tasks and crontab jobs.
HMAC Generator
Compute HMAC signatures with modern SHA algorithms using a secret key and message payload directly in your browser.
Regex Tester
Test and debug JavaScript regular expressions with live matches, highlighting, and quick feedback to refine patterns for validation, search, and replace.
Regex Pattern Builder
Compose regular expressions with guided toggles for character sets, anchors, quantifiers, and flags. Test against sample input instantly.
URL Parser
Parse a URL into protocol, host, path, query string, and hash. Quick online URL analyzer tool.

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Images

Image tools to compress, resize, convert, and optimize pictures. Extract palettes, convert to WebP, grayscale, run OCR, or view EXIF photo metadata fast.

Favicon Generator
Upload a logo or icon to instantly generate common favicon sizes. Preview each size and download everything in a single ZIP package.
App Icon Generator
Generate complete app icon packs for iOS, Android, and PWAs from one image. Export favicon sizes, touch icons, and a ready-to-use site.webmanifest in a ZIP.
Image Compressor
Compress images in your browser to reduce file size without losing quality. Supports JPG, PNG, and WebP.
Image to SVG Vectorizer
Convert PNG, JPG, and WEBP images into scalable SVG vectors. Tune color detail, trace quality, and noise filtering, then download clean SVG output.
Bulk Image Watermark
Batch watermark multiple images in your browser. Customize text, opacity, position, and style, then export all processed files in one ZIP download.
Universal Image Converter
Convert images between PNG, JPG, WebP, and BMP without uploading anything. Batch process, resize, rename, and download the results as a ZIP — all in your browser.
Background Remover
Cut subjects out of photos instantly with on-device background removal. Choose model quality, tweak the canvas background, and download clean PNGs without uploading your files.
PNG ⇄ JPG
Convert PNG to JPG or JPG to PNG instantly in your browser. Preserve quality and download in seconds.
PNG → JPEG
Turn PNG graphics into lightweight JPEGs with fine-grained control over quality and dimensions. Queue multiple files and export them together in seconds.

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Cheatsheets

Printable-style cheatsheets packed with syntax, tables, and best practices for Markdown, regex, HTML, CSS, JavaScript, SQL, and more for quick lookup.

Regex Cheatsheet
Anchors, character classes, quantifiers, flags, and real-world regex patterns you can paste into your next search.
Markdown Cheatsheet
Copy-ready Markdown syntax for headings, emphasis, lists, tables, code blocks, and media embeds, plus layout tips for clean docs and READMEs that render well.
HTML Cheatsheet
Semantic HTML reference covering document structure, text elements, media, forms, and SEO-ready metadata.
CSS Cheatsheet
Quick CSS reference for selectors, box model utilities, flexbox, grid, and responsive typography patterns.
JavaScript Cheatsheet
Modern JavaScript reference packed with syntax basics, array helpers, async patterns, modules, and DOM tips.
SQL Cheatsheet
SQL command reference for SELECT queries, filtering, joins, aggregation, schema changes, and performance tips.

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PDF Tools

Client-side PDF utilities to merge, split, convert, secure, and annotate documents, with fast results for sharing, archiving, and printing in one place.

Word to PDF
Convert DOC or DOCX files into polished, shareable PDFs that preserve layout and fonts, perfect for resumes, proposals, reports, and client-ready documents.
Merge PDF
Combine multiple PDF files into one streamlined document directly in your browser. Runs in your browser with no sign-up required. Keeps your data private on-device.
Combine PDFs
Combine multiple PDFs in the exact order you need, reorder pages visually, and export one clean document for sharing, printing, or archiving without extra apps.
Split PDF
Extract individual pages or page ranges from a PDF without uploading anywhere. Runs in your browser with no sign-up required. Keeps your data private on-device.
Compress PDF
Compress large PDFs to a smaller size while keeping text readable and images clear, so files are easier to email, upload, and share without sacrificing layout.
PDF to Word
Convert each PDF page into a high-fidelity DOCX page image. Runs in your browser with no sign-up required. Keeps your data private on-device.
PDF to PowerPoint
Convert each PDF page into a high-fidelity slide image in PPTX format. Runs in your browser with no sign-up required. Keeps your data private on-device.
PowerPoint to PDF
Convert PPTX slides into PDF pages with positioned text blocks and embedded images. Runs in your browser with no sign-up required. Keeps your data private on-device.
Edit PDF
Add text, shapes, and quick annotations to any PDF without leaving your browser. Runs in your browser with no sign-up required. Keeps your data private on-device.

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Why professionals choose ToolHop

ToolHop keeps core workflows close at hand. Whether you are formatting copy, validating data, checking DNS records, or converting artwork, our fast-loading utilities deliver the answer in seconds.

  • Unified toolbox: 80+ calculators, converters, generators, and developer helpers organised for focus.
  • Instant access: Launch tools directly from search, category anchors, or saved bookmarks—no account wall.
  • Crafted for clarity: Each interface is clean, responsive, and tuned for both desktop keyboards and on-the-go touch screens.

Built for everyday problem solving

From marketing teams and developers to designers and students, ToolHop supports fast, repeatable tasks. Create conversion-ready copy with the Text toolkit, double-check figures with the calculator utilities, validate records with the networking suite, or explore visual palettes inside the color lab.

Each tool loads client-side for instant feedback, and most support deep linking so you can share precise results with teammates. We regularly refresh the catalog with trending formats, regional calculators, accessibility helpers, and workflow upgrades based on real user feedback.

Frequently asked questions

What kinds of tools does ToolHop include?

ToolHop bundles text utilities, developer helpers, file converters, color tools, finance calculators, and productivity timers so you can tackle everyday tasks in one tab.

Are ToolHop utilities really free to use?

Yes. Every calculator, generator, and converter on ToolHop is free to launch with no account required. You can bookmark and share direct links to any tool.

How do I find the right tool quickly?

Use the search box at the top of the page to surface instant results, browse categories for curated collections, or jump to the all tools directory for a complete alphabetical list.

Can I request a new tool?

Absolutely. Reach out to support@toolhop.app with your idea. We continually expand the catalog based on community feedback and emerging workflows.

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