Timestamp Difference Calculator
Find the exact gap between two timestamps or dates. Paste Unix time, ISO 8601, or plain dates and read the answer in years, days, hours, minutes, and seconds.
Frequently Asked Questions
›How do I calculate the difference between two timestamps?
Paste a value into each field. The tool accepts Unix seconds, Unix milliseconds, ISO 8601, and plain dates like 'March 30, 2024 9:00'. The difference appears at once in calendar terms and in total seconds, minutes, hours, and days.
›Does it handle Unix seconds and milliseconds together?
Yes. Each field is detected on its own, so you can compare a 10-digit Unix timestamp against a 13-digit millisecond timestamp or an ISO date without converting them first.
›Why does the calendar difference not match the total days?
Months have different lengths. The calendar result counts whole months and years the way a person does, so 'Jan 31 to Mar 1' reads as 1 month 1 day. The total-days figure divides the raw elapsed time by 24 hours.
›Does it count business days?
Yes. The result includes the number of weekdays (Monday to Friday) between the two moments, next to the total calendar days.
›Is my data sent anywhere?
No. Every calculation runs in your browser with the built-in Date object. Nothing is uploaded, logged, or stored.