calculy
New

The little
everyday calculators.

A tidy little almanac of everyday calculators.

Today's tool

Password Generator

Create strong random passwords with a one-tap copy button

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Finance

Interest, currency, loans, and more

Compound Interest Calculator

Project a balance from principal, rate, time, and compounding frequency

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Loan Payment Calculator

Calculate monthly payment, total interest, and an amortization schedule

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Retirement Savings Calculator

Compare what you'll have at retirement against what you'll need

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Discount Calculator

Enter any two of original price, percent off, and sale price — the third is filled in for you

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Date & Time

Date diffs, time-zone conversion, and more

D-Day Calculator

Count the days, weeks, months, and years between two dates

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Age Calculator

Get exact age in years/months/days plus total days, hours, and next-birthday countdown

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Business Days Calculator

Count working days between two dates, or add working days to a starting date

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Units

Length, weight, temperature conversions

Pyeong ↔ Square Meter

Convert between Korean pyeong and square meters

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Shoe Size Converter

Convert shoe sizes between US, UK, EU, KR (mm), and JP (cm)

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Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin in one tap

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Health

BMI, calories, and other health helpers

Sleep Cycle Calculator

Find the best bedtime or wake-up time using 90-minute sleep cycles

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BMR & TDEE Calculator

Estimate your basal metabolic rate and daily calories with Mifflin-St Jeor

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BMI Calculator

Body Mass Index with both WHO and Asia-Pacific category cut-offs

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Misc

Other useful little tools

Character Count

Count characters, spaces, words and lines in any text

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Password Generator

Create strong random passwords with a one-tap copy button

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+Coming soon