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Calculators Tools
Free online calculators for everyday and professional use. Quickly work out BMI, percentages, loans, tips, age, compound interest, and more.
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BMI Calculator
Calculate your BMI using metric or imperial units. Instantly check if you are underweight, normal, overweight, or obese.
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Age Calculator
Enter your date of birth to calculate your exact age in years, months, and days. Quick, simple, and accurate.
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Tip Calculator
Work out tips quickly and split bills between people. Enter amount, tip %, and people to see per-person cost.
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UK VAT Calculator
Calculate UK VAT at 20%. Add VAT to a net price or remove VAT from a gross price instantly.
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Loan Calculator
Calculate loan repayments, monthly interest, and amortization schedules. Useful for mortgages and personal loans.
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Compound Interest
Calculate compound interest on savings or investments. Choose compounding frequency and growth duration.
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Percentage Calculator
Calculate percentages easily. Find X% of Y, percentage increase or decrease, and reverse percentage problems.
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Prime Number Checker
Enter a number to check if it’s prime using a fast trial-division test.
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Percentage Difference
Calculate the absolute change and percent change from one value to another.
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Factorial Calculator
Calculate the factorial of any integer n with large number support.
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Prime Generator
Generate a list of the first N prime numbers instantly.
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Number Base Calculator
Convert numbers between binary, octal, decimal, and hexadecimal instantly.
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GPA Calculator
Calculate your GPA on a 4.0 scale with credits. Add courses and see GPA instantly.
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Body Fat Calculator
Estimate body fat percentage using height, neck, waist (and hip). Quick, offline.
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Retirement Savings
Project retirement savings with monthly contributions and return rates over time.
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Calories Burned
Estimate calories burned for common activities using your weight and duration.
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