Timestamp Converter

Convert Unix timestamps and dates in any timezone

A timestamp converter translates between Unix epoch time — the number of seconds since 1 January 1970 UTC — and the human-readable dates people actually understand. Our free tool converts in both directions, accepts timestamps in seconds or milliseconds, and formats results in whatever timezone you select. That flexibility makes it invaluable when you are staring at a raw epoch value in a log file or database and need to know exactly when something happened.

Timestamps appear everywhere in software: as record creation dates, log entries, token expiries, cache headers, and API fields. They are compact and timezone-independent, but they are impossible to read at a glance. This converter bridges that gap, auto-detecting whether a value is in seconds or milliseconds, and letting you paste a date to get the corresponding epoch value back for use in code or queries.

A live current-time display ticks in real time so you can copy the exact epoch for right now — perfect for testing, seeding data, or setting expirations. Everything is calculated in your browser with no server calls, so your data stays private and the tool keeps working even without a network connection. It is a quick, dependable utility for developers, sysadmins, and anyone who works with timestamps.

Why use Timestamp Converter?

Both directions

Convert Unix timestamps to readable dates and turn any date back into a timestamp with equal ease.

Seconds and milliseconds

Handle classic 10-digit second timestamps and 13-digit millisecond values, with automatic unit detection.

Timezone aware

Format dates in UTC, your local zone, or any region you choose so the same instant makes sense everywhere.

Live current time

A real-time clock shows the current epoch value, ready to copy for testing and record-keeping.

How to use Timestamp Converter

1
Choose a direction
Decide whether you are converting a timestamp to a date or a date to a timestamp.
2
Select the unit
Pick seconds or milliseconds, or let the tool auto-detect based on the number's length.
3
Enter your value
Paste the timestamp or pick a date, then choose the timezone you want the result shown in.
4
Read and copy
The converted value appears instantly and can be copied to your clipboard with one click.

Common use cases

Read log timestamps

Turn cryptic epoch values in server logs into precise, timezone-adjusted dates to reconstruct exactly when events occurred.

Debug token expiry

Convert the exp claim of a JWT or an expiry field into a readable date to confirm whether a token is still valid.

Seed and test data

Grab the current epoch or a specific date's timestamp to populate fixtures, schedules, and test scenarios.

Coordinate across timezones

Translate a single instant into multiple regional times to schedule releases, meetings, or maintenance windows.

Worked example: Why a webhook looked 3600 seconds ‘early’

A shop’s webhook logged `created_at: 1758124800`. Staff in London thought it was an hour early compared with the till receipt. Converting the Unix timestamp showed UTC; the till was BST. There was no bug in the payment provider — only a timezone display mismatch.

They also converted a Java millisecond timestamp that was 13 digits, not 10. Treating it as seconds would have landed in the year 58 million. The tool’s unit toggle (seconds vs milliseconds) was the whole fix.

Limitations

Unix time is UTC-based. Local display depends on which zone you select.
Leap seconds are not something this converter debates; Unix time smears or ignores them depending on the system.
Far-future or pre-1970 values can hit Date implementation limits in some browsers.
This is not a cron parser.

When not to use Timestamp Converter

Do not use a one-off conversion as the source of truth for legal deadlines — store instants in UTC in the database.
Scheduling meetings across zones is clearer in the timezone converter.
Do not paste timestamps from classified systems into a web page if policy forbids it.

Features at a glance

Unix timestamp to human-readable date
Date to Unix timestamp conversion
Seconds and milliseconds support
Automatic unit detection
Live current timestamp display
Timezone selection including UTC and local
One-click copy of any value
100% client-side and offline-capable

Frequently asked questions

What is a Unix timestamp?

A Unix timestamp is the number of seconds that have elapsed since 00:00:00 UTC on 1 January 1970, known as the Unix epoch. It is a compact, timezone-independent way to represent a moment in time, which is why databases, APIs, and log files use it so widely.

What is the difference between seconds and milliseconds timestamps?

Classic Unix timestamps count whole seconds, producing a 10-digit number for current dates. JavaScript and many modern APIs use milliseconds instead, producing a 13-digit number. This tool lets you choose the unit or auto-detects it by length so you always get the correct conversion.

How does the timezone selector affect the result?

The underlying timestamp is always UTC-based, but humans think in local time. Selecting a timezone changes how the tool formats the human-readable date and how it interprets a date you enter for conversion back to a timestamp. This makes it easy to reason about the same instant across regions.

Does the converter update the current time automatically?

Yes. The tool shows a live current Unix timestamp that ticks in real time, so you can copy the exact epoch value for right now with a single click. This is handy for testing, debugging, and generating fresh timestamps for records.

Is this timestamp converter private and offline-capable?

All conversions happen in your browser with no server calls, so your data never leaves your device. Once the page has loaded it continues to work without a network connection, making it reliable for developers working in restricted or offline environments.

Your privacy matters

Timestamp Converter is designed to run in your web browser. File and text tools process bytes in memory on your device rather than uploading them to a ToolsGuru converter API. Network requests you still see are the page itself, analytics, and ads — not a copy of your document sitting in our logs. How we process files, and how to check.