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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.

BMI Calculator
Calculate your BMI using metric or imperial units. Instantly check if you are underweight, normal, overweight, or obese.
Scientific Calculator
Work with trig, logs, factorials, powers, hyperbolic functions, and memory features in a beautiful scientific calculator.
Freelance Hourly Rate Calculator
Calculate the hourly and day rate you need to hit your freelance income goals. Factor in expenses, billable hours, and profit margins.
Age Calculator
Enter your date of birth to calculate your exact age in years, months, and days. Quick, simple, and accurate.
Pet Age Calculator
Convert between human and pet years instantly. Estimate the age of dogs, cats, rabbits, horses, parrots, and more using quick reference multipliers.
Tip Calculator
Work out tips quickly and split bills between people. Enter amount, tip %, and people to see per-person cost.
UK VAT Calculator
Calculate UK VAT at 20%. Add VAT to a net price or remove VAT from a gross price instantly.
Loan Calculator
Calculate loan repayments, monthly interest, and amortization schedules. Useful for mortgages and personal loans.
Compound Interest
Calculate compound interest on savings or investments. Choose compounding frequency and growth duration.
Fraction Calculator
Work with fractions effortlessly. Simplify, add, subtract, multiply, divide, and convert to decimals in one clean workspace.
Percentage Calculator
Calculate percentages easily. Find X% of Y, percentage increase or decrease, and reverse percentage problems.
Prime Number Checker
Enter a number to check if it’s prime using a fast trial-division test.

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Converters

Fast and simple conversion tools. Convert between file formats, text encodings, units, currencies, dates, and numbers like HEX, Base64, Morse code, and more.

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 Encode / Decode
Convert text to Base64 and decode Base64 back to text. Perfect for developers, security, and encoding binary data.
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.
Time Zone Converter
Convert dates and times between different time zones instantly. Useful for meetings, travel, and global events.
HTML Entities
Encode or decode HTML entities quickly. Convert symbols, characters, and text for safe web use.
CSV → JSON
Convert CSV files to JSON arrays with options. Upload a file or paste data and get instant conversion.

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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.

Word Counter
Instantly count words, characters, sentences, paragraphs, and reading time. Perfect for essays, SEO, writers, and social posts.
Case Converter
Convert text between UPPERCASE, lowercase, Title Case, Sentence case, kebab-case, and snake_case instantly online.
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
Strip duplicate lines from text and clean whitespace. Quick online tool to tidy lists and datasets.
Word Frequency
Paste text and see the most common words with frequency counts. Great for SEO, linguistics, and analysis.
Text Reverser
Reverse text by characters, words, or lines. Handy for puzzles and quick transformations.
Emoji Remover
Remove emojis and variation selectors from text with one click. Clean text for processing or publishing.
Palindrome Checker
Check if a word or phrase reads the same backwards. Ignores spaces and punctuation.

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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
Check, validate, and parse SWIFT/BIC codes. Instantly see bank code, country, location, and branch information. Ensure codes follow ISO 9362 format for international payments.
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
Validate US bank routing numbers (ABA numbers) instantly. Check digit length, verify checksum, and detect 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.
ACH & SEPA File Linting
Lint ACH NACHA files and SEPA pain.001 XML instantly in the browser. Catch record length issues, missing control totals, and schema gaps before sending to your bank.
Regulatory Limit & Fee Calculator
Estimate per-transaction limits and bank fees across SEPA Instant, Faster Payments, FedNow, and Same Day ACH. Model volume caps and blended rates before launching new payout flows.
IBAN Country Formats
Lookup IBAN formats by country. See required length, country code, and example IBANs. Useful for international banking and transfers.

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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.
Motion Path Generator
Define bezier control points, visualize the curve, and export production-ready CSS offset-path animations with configurable timing, iterations, and offset-rotate.
Scroll Animation Builder
Design scroll-driven reveal effects, map scroll ranges, and export modern @scroll-timeline CSS alongside IntersectionObserver fallbacks for wider browser support.
Easing Function Visualizer
Design custom cubic-bezier easing curves with drag-and-drop handles, presets, live motion previews, and ready-to-copy CSS.

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Networking

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

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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 customizable headers and payloads. Choose HS256, HS384, or HS512 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 SHA-256, SHA-1, or MD5 using a secret key. Secure online hashing tool.
Regex Tester
Test and debug JavaScript regular expressions. Highlight matches and quickly verify regex patterns.
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.
JS Minifier
Minify and compress JavaScript code instantly. Reduce file size with Terser-style compression and improve load speed.
CSS Minifier
Minify CSS online by removing whitespace, comments, and redundancy. Optimize your stylesheets quickly.
HTML Minifier
Minify HTML code instantly. Remove comments, extra spaces, and reduce file size for faster websites.

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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.

Favicon Generator
Upload a logo or icon to instantly generate common favicon sizes. Preview each size and download everything in a single ZIP package.
Image Compressor
Compress images in your browser to reduce file size without losing quality. Supports JPG, PNG, and WebP.
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.
JPEG → PNG
Convert JPG photos into crystal-clear PNG files while keeping everything offline. Batch resize, rename, and download your converted images in a click.
PNG → WebP
Compress PNG assets into speedy WebP images with adjustable quality and batch processing. Perfect for web performance and modern image delivery.
WebP → PNG
Convert modern WebP files into widely supported PNG images right in your browser. Restore transparency, tweak dimensions, and export everything at once.
JPEG → WebP
Shrink heavy JPEG photos into efficient WebP files. Adjust compression, resize galleries, and download the optimized images as a single archive.
WebP → JPEG
Export WebP images into universally supported JPEG files with adjustable quality. Batch convert offline and ship results in moments.
Image Resizer
Resize images. Keep aspect ratio, adjust quality, and choose format (JPG, PNG, WebP).

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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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