⏳ Epoch Converter

Epoch time counts the seconds since 1 January 1970 UTC. Paste an epoch value to see what moment it represents in your timezone and in UTC, or pick a date to get its epoch value back.

Unix timestamp

Seconds, milliseconds, microseconds or nanoseconds — detected automatically.

…or a date and time

Interpreted in your local timezone.

How the unit is detected

You do not pick seconds or milliseconds - the converter counts the digits, ignoring any minus sign and stripping commas, spaces and underscores first:

up to 11 digits -> seconds        up to 17 -> microseconds
up to 14 digits -> milliseconds   more     -> nanoseconds

1786953600 is ten digits, so it is read as seconds: 17 August 2026, 08:00:00 UTC. The thresholds are deliberately loose, which is the thing to watch: an eleven-digit millisecond value is still read as seconds and lands in 2286 or later. Anything past the year 9999 is refused rather than shown wrong.

The rows under the conversion

Local vs UTC - the same instant twice; the local ISO row carries your offset in brackets.
ISO week number - the ISO-8601 week, which belongs to whichever year holds its Thursday. Early January can therefore be week 52 of the year before.
Day of year - 1 for 1 January, 251 for 8 September 2026, 366 in a leap year.
Relative - approximate above a day, using an average month of 30.4375 days and a year of 365.25 days, so "3 months ago" is a rough figure and the exact date rows are not.

Typing in either box fills the other, so you can convert a date to epoch by picking it in the date field and reading the timestamp.

Frequently asked questions

What is epoch time right now?

The box is pre-filled on load and the "Use current time" button refreshes it. It is a ten-digit number, and stays ten digits until November 2286.

Can epoch time be negative?

Yes. Negative values are dates before 1970 and the converter accepts them - -86400 is 31 December 1969. Many databases and APIs reject them, so check before storing one.

Why is my epoch date eight hours out?

You are comparing a local row against a UTC one. Epoch values carry no timezone; the Local time and UTC rows here show the same instant rendered two ways.