Unix Timestamp Converter
High-precision unix timestamp converter. Switch between epoch time and human-readable dates instantly.
Current Unix Timestamp
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ISO-8601
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Locale String
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UTC String
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Built With Care
“Unix time counts whole seconds since January 1, 1970 at 00:00:00 UTC. The converter detects whether you pasted a 10-digit seconds value or a 13-digit millisecond value and builds the matching JavaScript Date object, rendering the same instant as ISO-8601, UTC, and browser locale strings.”
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and back again in real time. This epoch time converter shows the same instant as ISO-8601, UTC, and local time strings, and every field updates as you type.
- 1Read the Current Unix Timestamp at the top, which ticks from your device clock.
- 2Paste any 10-digit seconds value into the Unix Timestamp field to see the matching date.
- 3Paste a human-readable date into the second field to get its epoch seconds value.
- 4Use the Use Current Time button to snap both fields back to the present moment.
- 5Copy the ISO-8601, locale, or UTC string from the bottom cards for use in your code.
- 6Edit either field again at any time; the conversion updates on every keystroke.
- Bidirectional Conversion: Seconds to date and date to seconds, updated live as you type.
- Live Epoch Clock: A current-time display showing the exact Unix second as it ticks.
- Multiple Date Formats: ISO-8601, UTC string, and browser locale string for the same instant.
- Milliseconds Support: 13-digit millisecond values are auto-detected and converted correctly.
- One-Click Copy: Individual copy buttons on every field and format card.
- Timezone Independent: The numeric epoch is identical everywhere; only the displayed string changes.
Unix Timestamp Converter Specs
Limits
- Seconds (10-digit) or milliseconds (13-digit) auto-detect
- Bidirectional unix ↔ ISO
Formats
- Output: ISO 8601 + UTC string
Defaults
- Current unix time on load
How it works
- JS Date + heuristics on digit count
Honest caveats
- Pre-1970 and post-year-2038 timestamps not specially handled
- Local timezone display uses browser offset
Real Ways People Use This
Database Debugging
Decode epoch values stored in database columns to read creation dates, session expiry times, and audit trails at a glance.
API Response Testing
Convert expires_at and created_at fields from JSON responses to verify tokens, webhook timestamps, and scheduled jobs.
Log File Analysis
Translate unix timestamps in server logs and error traces into readable times while investigating incidents.
Cron and Job Scheduling
Confirm that scheduled task times in crontab files and task runners match the wall-clock time you intended.
Configuration Checks
Verify hardcoded timestamps in configuration files, feature flags, and cache invalidation windows before shipping.
- The locale string reflects your browser's timezone; the numeric epoch itself never changes with the timezone.
- Leap seconds are not accounted for; the converter treats every day as exactly 86,400 seconds, matching most systems.
- Negative timestamps (before 1970) are parsed, but some legacy tools and databases cannot store them.
- 1Cross-check one known value, such as 1700000000, against a reference date before trusting the output.
- 2Paste a 13-digit millisecond value to confirm auto-detection converts it to the expected date.
- 3Verify the expected date in the timezone you actually intend to use, not the one your machine is set to.