Unix → Human
Paste any Unix timestamp (seconds or milliseconds) to see it converted to multiple
human-readable formats: UTC, ISO 8601, local time, and relative time ("2 hours ago").
Human → Unix
Select a date, time, and timezone to generate the corresponding Unix timestamp in both
seconds and milliseconds.
Timezones
Enter a timestamp to see what time it represents across 8 major world timezones
simultaneously. Perfect for coordinating across distributed teams.
Relative Time
Calculate the exact difference between two timestamps. Great for debugging time-based logic
or understanding log sequences.
Duration
Add or subtract days, hours, and minutes from a starting timestamp. Useful for calculating
expiration times, scheduling, or "what time will it be in 3 days?"
Batch
Convert multiple timestamps at once. Paste a list (one per line) and get them all converted
to your chosen format. Export as CSV for spreadsheets.