Timestamp Converter — Free Online Tool
Convert Unix epoch timestamps to human dates and back, in both directions.
Timestamp → Date
Date → Timestamp
About Timestamp Converter
The Timestamp Converter translates Unix epoch values into human-readable dates and turns a chosen date and time back into a timestamp. It handles both seconds and milliseconds and shows results as local time, UTC, and ISO 8601, which makes it perfect for debugging logs, APIs, and database fields.
A built-in 'Now' button drops in the current epoch instantly, and the reverse converter accepts any date you pick to return both seconds and milliseconds. Everything runs locally in your browser using native date functions, so conversions are immediate and your data stays private.
How to Use Timestamp Converter
- Enter a Unix timestamp and choose seconds or milliseconds, then click 'Convert' to see the date.
- Click 'Now' to fill in the current timestamp automatically.
- To go the other way, pick a date and time in the second section.
- Click 'Convert' to read the matching seconds, milliseconds, and ISO value.
Key Features
Convert epoch timestamps to dates and dates back to timestamps
Supports both seconds and milliseconds input
Shows local time, UTC, and ISO 8601 formats
One-click 'Now' button for the current timestamp
100% client-side processing with instant results
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp is the number of seconds (or milliseconds) elapsed since January 1, 1970 UTC, known as the epoch. It is a compact, timezone-independent way to store a moment in time.
Does the tool support seconds and milliseconds?
Yes. When converting a timestamp to a date, choose whether your value is in seconds or milliseconds. The 'Now' button fills in the current time in seconds for convenience.
Which time formats are shown?
Converting a timestamp displays the local time, the UTC string, and the ISO 8601 format, so you can read the same instant in the form you need.
Why does the date use my local timezone?
Date results are derived from your browser's clock and locale, so the local line reflects your timezone while the UTC and ISO lines are timezone-neutral.
Is my data kept private?
Yes. All conversions happen in your browser using JavaScript Date functions, so nothing you enter is uploaded to a server.