Free online calculators and converters
Quick answers to everyday maths: percentages, age, BMI, loan payments, discounts and the days between dates, plus a unit converter that includes local units like marla, kanal and tola.
11 tools, all free with no sign-up.
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Percentage calculator New
Work out percentages, percentage change, and what percent one number is of another.
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Age calculator New
Find an exact age in years, months and days, and the days until the next birthday.
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BMI calculator New
Calculate body mass index in metric or imperial units.
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Loan & EMI calculator New
Work out the monthly payment, total interest and repayment schedule for a loan.
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Discount & tip calculator New
Find a sale price after a discount, or split a bill with a tip.
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Date difference calculator New
Count the days, weeks and working days between two dates, or add days to a date.
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Unit converter New
Convert length, weight, temperature, area, volume, speed, data size and time.
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Random number generator
Pick random whole numbers in a range.
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Number to words
Spell out a number in words, in many languages.
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Number to Roman numerals
Convert a number (1–3999) to Roman numerals.
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Roman numerals to number
Convert Roman numerals back to a number.