Is the Timestamp Converter free to use?

Yes. Timestamp Converter is completely free with no sign-up, no watermarks and no usage limits.

Are my files uploaded to a server?

No. Timestamp Converter runs entirely in your browser — your files and data never leave your device.

Does it work on mobile and offline?

Yes. It works in any modern browser on desktop or mobile, and the toolkit is a PWA that keeps working offline after your first visit.

Timestamp Converter

Convert Unix timestamps to human-readable dates and back, across time zones, with millisecond support. Runs locally.

How it works

1
Paste your input
Type or paste your data into Timestamp Converter.
2
Adjust options
Tweak the available settings — the output updates as you type.
3
Copy the result
Copy the output to your clipboard or download it as a file.

Common uses

Turn a Unix timestamp from a log into a readable date.
Convert a date back to epoch for an API filter.
Check whether a value is in seconds or milliseconds.

About the Timestamp Converter

Convert Unix timestamps to human-readable dates and back, across time zones, with millisecond support. Runs locally.

Timestamp Converter is part of a free, privacy-first toolkit. Everything is computed instantly on the client, so your data never leaves the page — useful when you're working with sensitive payloads.

Because timestamp converter works without any sign-up or installation, you can use it as often as you like and it's always available — on desktop or mobile, and even offline.

Explore more developer tools, or try JSON Formatter · JSON Validator.