The right unit changes everything
Convert Unix timestamps.
Keep every nanosecond.
EpochBench converts Unix seconds, milliseconds, microseconds, nanoseconds, Ethereum hex seconds and ISO dates with an explicit offset. Review UTC results and download exact batch reports.
What does your source use?
Up to 200 lines / 64 KiB. Input stays on this device. Never enter private keys or seed phrases.One instant. Every unit.
UTC output preserves up to nine fractional digits. The Ethereum hex form is available only for nonnegative whole seconds.
A timestamp is a label, not evidence of a confirmed block, finality or payment. The device-time button uses your computer’s clock.
Exports contain your original input. JSON values are strings to preserve precision. CSV text cells start with an apostrophe to prevent spreadsheet formulas and numeric rounding; use JSON for automated processing.
| Line | Input | UTC / error | Seconds | Nanoseconds |
|---|
Units are never guessed
1700000000 seconds and 1700000000 milliseconds are different dates. Choose the unit your source documents. Hex mode means Ethereum-style whole seconds.
Offsets must be explicit
Use 2026-10-11T12:00:00Z or 2026-10-11T15:00:00+03:00. Local date strings, timezone names and ambiguous -00:00 are rejected.
Precision has a clear boundary
Years 0001–9999 UTC, at most nanosecond precision. No leap seconds, DST conversion, fractional nanoseconds or scientific notation. Batch errors stay visible.
Free, whether you donate or not.
If this saved a debugging detour, share it with your team or optionally support the free collection. Every conversion and export remains available.
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