Age calculator

Exact age from a date of birth — years, months and days, total days lived, and how long until the next birthday.

This tool runs entirely in your browser — nothing you type or open here is ever uploaded. You can disconnect from the internet after the page loads and it still works.

Date of birth

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Exact days between two dates, with the calendar breakdown.

⚖️ Unit converter

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🔢 Number bases

Binary, octal, decimal, hex — arbitrary precision.

🎲 Random number

True random numbers in any range, with or without repeats.

🪙 Coin flip

A fair coin — exactly 50/50, with a running tally.

🎲 Dice roller

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