Timestamp Converter

The Timestamp Converter turns a Unix timestamp, millisecond value, or date into every other common representation — ISO 8601, UTC, local time, and epoch — with a live clock. It is for developers working with times across logs, databases, and APIs.

Systems store time in different forms, and converting by hand is error-prone. Doing it locally gives every format at once, instantly, with a running clock for reference.

1. Enter a Unix timestamp in seconds or milliseconds, or pick a date.
2. Every other format is computed immediately.
3. Read the ISO 8601, UTC, local, and epoch values together.
4. Use the live clock to grab the current time in any format.
5. Copy the representation you need.

• Seconds and milliseconds input
• ISO 8601, UTC, local, and epoch output
• Live current-time clock
• Computed in the browser

• Reading Unix timestamps found in logs and databases
• Converting an API’s epoch field to a human-readable date
• Checking a token or cache expiry time
• Coordinating times across time zones during debugging

• Confirm whether a value is in seconds or milliseconds — a factor-of-1000 mistake is the most common bug.
• Store and exchange times in UTC, and convert to local only for display.
• ISO 8601 with an explicit offset is the safest format for passing times between systems.