What this calculator does
Unix timestamp converter works out epoch seconds to a readable date and back. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaUnix time = seconds since 1970-01-01 00:00:00 UTC
The inputs explained
| Field | What to enter |
|---|---|
| Unix timestamp (seconds) | A number. Starts at 1700000000. |
| …or a date to convert | A calendar date. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with unix timestamp (seconds)
Every other input is held at the calculator’s starting values while unix timestamp (seconds) varies. Select any row to load that scenario into the calculator.
How the answer changes with unix timestamp (seconds)
| Unix timestamp (seconds) | Timestamp as a date | Local time | Your date as a timestamp |
|---|---|---|---|
| 850,000,000 | Sat, 07 Dec 1996 23:06:40 GMT | 08/12/1996, 10:06:40 am | 1,785,765,600 |
| 1,275,000,000 | Thu, 27 May 2010 22:40:00 GMT | 28/05/2010, 8:40:00 am | 1,785,765,600 |
| 1,700,000,000 | Tue, 14 Nov 2023 22:13:20 GMT | 15/11/2023, 9:13:20 am | 1,785,765,600 |
| 2,550,000,000 | Fri, 21 Oct 2050 21:20:00 GMT | 22/10/2050, 8:20:00 am | 1,785,765,600 |
| 3,400,000,000 | Mon, 27 Sep 2077 20:26:40 GMT | 28/09/2077, 6:26:40 am | 1,785,765,600 |
| 5,100,000,000 | Sun, 12 Aug 2131 18:40:00 GMT | 13/08/2131, 4:40:00 am | 1,785,765,600 |