Age Calculator
Calculate age in calendar years, months, and days. Choose a date of birth and a reference date, with a clear breakdown and no upload.
CalculatorsDeveloper Tools / browser workspace
Unix Timestamp Converter
Convert Unix seconds or milliseconds into UTC dates and back.
Browser workspace
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A quick start
How to use it
- Choose seconds or milliseconds.
- Enter an integer timestamp or a UTC date.
- Convert and check the UTC result.
Common questions
How do I use the unix timestamp converter?
Choose seconds or milliseconds. Enter an integer timestamp or a UTC date. Convert and check the UTC result.
What should I check before using the result?
Unix time counts from 1970-01-01T00:00:00Z. Explicit units prevent confusing seconds with milliseconds.
Is my input stored or uploaded?
No. Tool input stays in browser memory and is not sent to a server. Favorites and recent tool names are saved locally only. Reloading clears your input.
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