What is a Unix timestamp?

A Unix timestamp is the number of seconds since 1970-01-01 00:00:00 UTC, not counting leap seconds. It is the standard way computers represent time, widely used in databases, APIs, and log files.

What's the difference between 10-digit and 13-digit timestamps?

A 10-digit number is a Unix timestamp in seconds; a 13-digit number is in milliseconds. For example, 1700000000 (seconds) and 1700000000000 (milliseconds) represent the same moment. Time Shuttle auto-detects both formats.

Is Time Shuttle free?

Yes, Time Shuttle is completely free with no hidden costs. All tools can be used without limits and without creating an account.

Is my data uploaded to a server?

No. All conversions in Time Shuttle happen locally in your browser using native JavaScript Date and Intl APIs. Your data never leaves your device.

What timezones does Time Shuttle support?

Time Shuttle uses the browser-native Intl.supportedValuesOf('timeZone') API, supporting all timezones in the IANA timezone database. This includes hundreds of timezones worldwide with automatic daylight saving time handling.

What date is 1700000000?

Unix timestamp 1700000000 (seconds) corresponds to 2023-11-14T22:13:20Z (UTC). You can enter this timestamp in Time Shuttle to see all formats and localized display.

How do I convert a date to a Unix timestamp?

In Time Shuttle, switch to 'Date → Timestamp' mode, enter a date (like 2023-11-14T22:13:20Z), and the tool automatically shows the corresponding Unix timestamp in both seconds and milliseconds.

What are leap seconds? Does Time Shuttle account for them?

Leap seconds are occasional extra seconds added to keep UTC synchronized with Earth's rotation. Unix timestamps by definition do not count leap seconds, so 1700000000 always corresponds to the same UTC moment regardless of leap seconds. Time Shuttle follows this standard.

About Time Shuttle

A free, privacy-first timestamp and date conversion tool that runs entirely in your browser.

What We Offer

Time Shuttle is a free online tool for converting Unix timestamps, human-readable dates, and timezones. It supports bidirectional conversion, multi-format output, timezone conversion using the full IANA database, relative time calculation, and batch processing.

Every operation happens in your browser using native JavaScript APIs — Date, Intl.DateTimeFormat, Intl.RelativeTimeFormat. No data is ever sent to a server, making Time Shuttle ideal for developers, security engineers, and anyone working with timestamps.

Client-Side Only

All conversions happen in your browser. No server processing, no data uploads.

Zero Data Collection

We don't collect, store, or transmit any of your data. What you convert stays on your device.

No Registration

Use all features instantly — no sign-up, no email, no tracking.

Lightning Fast

Native browser APIs ensure instant conversion with zero latency.

Who is Time Shuttle for?

1Web Developers

2Backend Engineers

3Security Analysts

4Students & Educators

When should I use Time Shuttle?

1API debugging: convert Unix timestamps from API responses to readable dates

2Log analysis: convert server log timestamps to local time

3Database queries: convert between database records and human-readable dates

4Timezone conversion: see the same moment in different timezones

5Batch processing: convert multiple timestamps at once for data analysis

How-To Guides

How to convert a Unix timestamp to a date

1Open the Time Shuttle website (time.shuttlelab.org)
2Paste or type the Unix timestamp in the input field
3The tool auto-detects seconds vs milliseconds and shows all formats
4Copy the format you need (ISO 8601, UTC, localized, etc.)

How to convert time between timezones

1Open the Time Shuttle website
2Enter a date or timestamp
3Select the source and target timezones
4View the converted result

How to batch convert timestamps

1Open the Time Shuttle website
2Switch to the Batch Convert tab
3Paste multiple timestamps in the text area (one per line)
4View the date for each timestamp

Time Shuttle vs Similar Tools

As of June 2026

Feature	Time Shuttle	epochconverter.com	unixtimestamp.com
100% Local Processing	✓	✗	✗
Auto-detect s/ms	✓	✓	✗
Timezone Conversion	✓	✓	✓
Relative Time Display	✓	✗	✗
Batch Conversion	✓	✗	✗
Multi-format Output	✓	✓	✓
Ad-free	✓	✗	✓
Clean Interface	✓	OK	OK

Frequently Asked Questions

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Get in Touch

Have questions, feedback, or suggestions? We'd love to hear from you.

support@shuttlelab.org