Calculators & Utilities
General-purpose calculators and converters for coursework and everyday life.
All calculators & utilities (13)
Scientific Calculator
A full scientific calculator with trig, logs, powers, factorials, memory and history. Type or tap.
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Unit Converter
Convert length, mass, temperature, area, volume, speed, time, data, energy, pressure, angle and power.
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Currency Calculator
Convert between currencies using exchange rates you enter yourself. No live rates, no data sent anywhere.
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BMI Calculator
Calculate body mass index in metric or imperial units, see your category and a healthy weight range.
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EMI Calculator
Work out the monthly EMI, total interest and full repayment schedule for an education, car or home loan.
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Simple Interest Calculator
Find simple interest, principal, rate or time with the SI = PRT/100 formula, in years, months or days.
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Compound Interest Calculator
See how savings grow with compounding and optional monthly deposits, with a chart and year-by-year table.
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Time Zone Converter
Convert a date and time between world time zones, with daylight saving handled by your browser.
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Random Number Generator
Generate random whole numbers or decimals in any range, with unique-only and sorting options.
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Dice Roller
Roll d4 to d100 or any custom die, several at once, with modifiers, dice notation and roll history.
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Stopwatch
A precise online stopwatch with lap and split times, keyboard shortcuts and CSV export.
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Countdown Timer
Set a countdown for exams, presentations or breaks, with quick presets and an optional alarm sound.
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Percentage Change Calculator
Calculate percentage increase or decrease between two values, apply a percentage to a number, or find percentage difference.
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