Date & Time

Date Difference

Calendar-aware duration between two dates, plus add or subtract durations.

Runs entirely in your browser: nothing you paste or upload is sent to a server.

Related: date, difference, duration, between, days, age, calculator, add days

More date & time

• Timestamp Converter — Convert Unix seconds or milliseconds and ISO 8601 into local, UTC and relative time.
• Time Zone Converter — Convert a moment across IANA time zones with offsets and DST awareness.
• Date Formatter — Render a date as ISO, RFC 3339, RFC 2822, custom patterns or relative time.
• Cron Expressions — Explain cron schedules in plain English and list the next run times.