Unix Timestamp Converter
Use Unix Timestamp Converter to convert between unix time and dates — free, immediate, and with nothing to install. Parsing, formatting and validation all run in your browser, so API keys, tokens and internal payloads are never transmitted. It is used most by backend engineers inspecting an API response mid-debug. Reports the line and position of a syntax error instead of failing silently. Nothing is gated: no signup wall, no trial period, no upgrade prompt.
Key features
- Reports the line and position of a syntax error instead of failing silently.
- Handles large payloads — several megabytes of JSON is fine.
- Works on desktop, tablet and phone — no separate app to install.
- No ads interrupting the tool itself, and no upsell before the result.
How to use Unix Timestamp Converter
- Paste your input: Drop the payload, code or value into the box above.
- Run it: Press the action button — errors are reported with their position.
- Take the output: Copy the result, or download it when the output is a file.
Frequently asked questions
- Is there a rate limit? — None. There is no server involved, so nothing to limit.
- Does it follow the official spec? — Yes — the published specification, not a simplified version, so results match your language's own parser.
- How large an input can it take? — Several megabytes is routine. The limit is your browser's memory, not a server quota.
- What happens with invalid input? — You get the position of the problem rather than a blank failure, so it is usable as a validator.