Unix Timestamp Converter
Convert Unix timestamps (seconds) to dates and back, in UTC.
Quick answer
- Formula: Timestamp = seconds since 1970-01-01 00:00:00 UTC; Date = timestamp × 1000 ms rendered in UTC
- Worked example — Date & time (UTC): January 1, 2026, 12:00:00 AM UTC (full example below).
Unix Timestamp Converter
| Date & time (UTC) | January 1, 2026, 12:00:00 AM UTC |
| Unix timestamp (seconds) | 1,767,225,600 |
Timestamp 1767225600 is exactly midnight UTC at the start of January 1, 2026.
Convert a Unix timestamp — seconds since January 1, 1970 — into a human-readable UTC date and time, or turn a date and time into its Unix timestamp.
Timestamps are timezone-free counts of seconds, which is why the date side of this converter is always shown in UTC.
The formula
Worked example
Timestamp 1767225600 is exactly midnight UTC at the start of January 1, 2026.
The example is pre-loaded in the result panel — press Calculate with your own numbers to replace it.
Frequently asked questions
Seconds or milliseconds?
This converter uses seconds, the classic Unix convention. If your timestamp has 13 digits it is in milliseconds — divide by 1,000 before entering it.
Why is the date shown in UTC?
A timestamp identifies one instant worldwide. Showing it in UTC keeps the conversion unambiguous; convert to a local zone afterwards with the Time Zone Converter if needed.
What is the epoch?
The Unix epoch is 00:00:00 UTC on January 1, 1970. Timestamp 0 is that moment, and negative timestamps are moments before it.
Category: Date & Time calculators
Sources & methodology
This calculator applies the formula shown on this page exactly as written, using the standard definitions for its inputs. Results are computed from the values you enter — no data is stored — and are rounded only for display.
Content last reviewed by CalcHub Editorial.
Embed this calculator on your site
Free to use with attribution — paste the snippet below and the calculator appears on your page, with a link back to CalcHub.
Related calculators
Time Zone Converter
Convert a date and time between world time zones, DST aware.
Time Duration Calculator
Elapsed time between two date-times in hours, minutes and days.
Download Time Calculator
How long a download takes at a given connection speed.
Date Duration Calculator
The length of a period as years, months and days, plus total days.