What does this tool do?
Timestamp Converter turns Unix timestamps (the number of seconds since 1970) into human-readable dates and times, and back again. It is handy for developers reading server logs, analysts inspecting database records, and anyone trying to decode the date fields buried inside an API response.
How to use it
- Enter your values into the fields.
- The result is calculated instantly.
- Read or copy the result.
Seconds or milliseconds?
A Unix timestamp is usually in seconds (10 digits, e.g. 1700000000), but JavaScript and many APIs use milliseconds (13 digits, e.g. 1700000000000). Picking the wrong unit drops your date back to 1970 or throws it thousands of years ahead. The tool detects the unit from the digit count, but you can override it manually, and it instantly shows the result in both UTC and your local time zone.
Common scenarios
Confirming when a cron job actually ran, reading the exp and iat claims inside a JWT, translating epoch values from log lines into plain English, inspecting created_at columns in a database, and comparing events across different time zones. Every conversion happens in your browser, so your data is never sent to a server.
Frequently asked questions
What exactly does a Unix timestamp count?
It counts the number of seconds elapsed since January 1, 1970, 00:00:00 UTC, known as the Unix epoch. It ignores leap seconds, which is why it is the accepted standard for everything except astronomy-grade precision.
What is the year 2038 problem?
Timestamps stored in a 32-bit signed integer overflow on January 19, 2038. Modern systems fix this by using 64-bit integers; the tool converts values across both the 32-bit and 64-bit ranges without trouble.
How does it handle time zones?
A Unix timestamp is always in UTC and carries no time zone. The tool shows the result both as UTC and in your browser's local time zone so you can compare the two side by side.
Is Timestamp Converter free?
Yes. Timestamp Converter and all 300+ tools on MagmaNex are completely free with no signup or account required.
Is my data safe?
Yes. Everything runs locally in your browser. The data you enter is never sent to a server, stored, or shared.
Does it work on mobile?
Yes. Timestamp Converter works on phones, tablets and desktops — no app download needed.
🔒 Privacy: everything runs in your browser, your data is never sent to a server.