Convert Unix timestamps to human-readable dates (and back) with timezone support, relative adjustments, and batch processing.
Precision & Timezone
Interpreting inputs as seconds (10-digit epoch).
Convert Unix epoch values into precise calendar dates.
Supports relative keywords like now or adjustments (e.g. +30d, -2h, +45m).
Chain multiple adjustments with commas or spaces.
Pick a calendar date/time to calculate epoch values.
Uses your local timezone; conversions respect the selected timezone above.
Apply offsets before converting to Unix time.
Paste multiple timestamps (comma or line separated) to convert instantly.
We respect the precision setting above for every entry.
| Input | ISO 8601 | Localized (UTC) | Copy |
|---|---|---|---|
| Paste timestamps to see conversions. | |||
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Unix timestamps are brilliant for machines but painful for people. This guide helps you translate between raw epoch values and human-readable dates without losing precision. Optimise reporting, QA workflows, or product release schedules with timezone-aware output that is ready to copy into any document.
All conversions run locally in your browser, so sensitive data never leaves your device.
See every Unix value translated into ISO 8601, RFC 3339, and a localized string that honours your preferred timezone.
Switch between seconds or milliseconds at any time — the converter automatically recalculates and keeps values accurate.
Apply offsets such as +30d, -2h, or +15m to compare deadlines, calculate expirations, or preview scheduling drift instantly.
Paste multiple timestamps and export consistent formatted results for debugging logs, analytics exports, or release scripts.
Select your starting value
Use the “Timestamp → Date” panel for epoch inputs or the “Date → Timestamp” panel for calendar inputs. You can toggle between seconds and milliseconds at any time.
Apply optional adjustments
Enter expressions like +7d or -30m to shift the result. Combine multiple offsets with commas.
Copy the format you need
Instantly copy ISO 8601, RFC 3339, localized strings, or the recalculated epoch value. Batch mode lets you reuse the same settings across a whole list of timestamps.
Relative expressions combine a sign (+/-), a number, and a unit. Supported units include:
Example: now +2h -30m moves two hours forward and then thirty minutes back.
A Unix timestamp (also called epoch time) counts the exact number of seconds or milliseconds that have elapsed since 1 January 1970 00:00:00 UTC. Because it is timezone-agnostic and purely numeric, it is ideal for syncing data across systems and programming languages.
Enter a calendar date and time in the “Date → Timestamp” panel, choose whether you need seconds or milliseconds, and the converter will output the correct epoch value immediately. You can then copy the result for use in APIs, databases, cron jobs, or signed tokens.
Press the “Use Now” button in either panel to insert the current moment automatically. The tool refreshes the timestamp, applies any relative offsets you have set, and displays ISO, RFC 3339, and localized formats you can copy.
