Unix Timestamp Converter

Convert Unix/epoch time to a human date and back, in any timezone. Runs entirely in your browser.

📖 Read the guide: What Is a Unix Timestamp? →

Unix timestamp

seconds / ms auto-detected

Human date

Timezone

How it works

Enter a timestamp

Type a Unix timestamp — seconds or milliseconds are detected automatically — or click Now.

Or enter a date

Type a human date or ISO 8601 string to convert the other way.

Choose a timezone

Pick any timezone (plus UTC and your local time) to see the converted values.

Copy the result

Copy the epoch, ISO, UTC or local representation you need.

Frequently Asked Questions

Does it handle milliseconds?

Yes — it auto-detects whether your number is in seconds or milliseconds and converts accordingly.

Can I convert for other timezones?

Yes, choose any IANA timezone; it also always shows UTC and your local time.

Is anything sent to a server?

No — all conversion uses your browser’s built-in date and timezone support.

Convert Unix timestamps (epoch time) to human-readable dates and back, online and free. Enter seconds or milliseconds — auto-detected — or a date or ISO 8601 string, and see the value in UTC, your local time and any timezone you choose, along with relative time like “3 hours ago”. Everything is computed in your browser with no server involved, which makes it fast and private for debugging logs, APIs and scheduled jobs.