Date & Time
Timestamp Converter
Convert Unix timestamps to dates and back.
Convert a Unix timestamp or a date string.
How to use
- Paste a Unix timestamp (seconds or milliseconds) or a date string.
- Choose the unit if auto-detection is wrong.
- Read ISO, UTC, and local representations, plus both second and millisecond epochs.
About this tool
Unix time counts seconds (or milliseconds) since 1970-01-01T00:00:00Z. APIs often mix seconds and milliseconds — ToolForge helps you tell them apart.
Auto-detection treats absolute values below 1e12 as seconds and larger values as milliseconds.
Examples
Seconds to ISO
1700000000
2023-11-14T22:13:20.000Z
FAQ
Why is my date off by a few hours?
Local time depends on your timezone. Compare the UTC and local fields to confirm.
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