Convert Unix timestamps.
Translate seconds or milliseconds into readable local and UTC dates.
🔒 Processed locallyYour input stays on this device and is never uploaded to Boring Tools.
Result
How to use Unix Timestamp Converter
Unix time counts elapsed time from 1970-01-01 UTC. Ten-digit values are usually seconds; thirteen-digit values are normally milliseconds.
Steps
- Enter a timestamp or parseable date.
- Choose the conversion direction.
- Copy UTC, local, seconds, or milliseconds output.
Formats, limits, and accuracy
A timestamp represents an instant and has no intrinsic timezone. Local display depends on the browser device timezone.
Frequently asked questions
How are seconds detected?
Smaller numeric values are treated as seconds and multiplied by 1,000.
Why does my local date differ?
The same instant is displayed with your device timezone offset.
Practical notes
Include an explicit timezone such as Z when entering an ISO date.
JWT exp and iat claims normally use Unix seconds.