Unix Timestamp Converter: Convert Timestamps to Dates (Free)

What Is a Unix Timestamp?

A Unix timestamp is the number of seconds that have passed since 1 January 1970, 00:00 UTC — a fixed reference point called the Unix epoch. Instead of storing "12 October 2026, 3:45 pm", a computer stores a single number such as 1791815100.

Because it is just a number, it is unambiguous across time zones, compact, and easy to compare. That is why databases, APIs, and log files are full of them.

Why Timestamps Look Confusing

Two details trip people up:

• UTC, not local time. A timestamp always counts from UTC. The same number shows a different clock reading depending on your time zone.
• Seconds vs milliseconds. Most systems use seconds, but JavaScript's Date.now() uses milliseconds. A timestamp with 13 digits is usually milliseconds.

How to Convert a Timestamp to a Date

1. Open the free Timestamp Converter.
2. Paste the Unix timestamp.
3. Read the human date in UTC and your local time.
4. Switch to the reverse mode to convert a date back into a timestamp.

Seconds vs Milliseconds

Digits	Unit	Example
10	Seconds	1791815100
13	Milliseconds	1791815100000

If a converted date lands in 1970, you probably passed milliseconds where seconds were expected, or vice versa.

Useful Conversions

• Time between two timestamps → Time Calculator
• Days between two calendar dates → Date Calculator

Where You Meet Timestamps

• Log files and error reports
• API responses and JWT tokens
• Database rows (created_at, updated_at)
• Analytics and event data

FAQ

Is the timestamp converter free? Yes. The Timestamp Converter is free and needs no signup.

Does it handle milliseconds? Yes. It accepts both second and millisecond timestamps.

What time zone does it show? It shows both UTC and your browser's local time zone so you can compare.

What is the Unix epoch? 1 January 1970, 00:00:00 UTC — the moment all Unix timestamps count from.

Read any timestamp in plain English with the free Timestamp Converter.