Time & Date
Time Duration Calculator
Calculate duration between two times
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
Frequently asked questions
What does the Time Duration Calculator do?
It helps you calculate duration between two times.
What inputs do I need?
Enter Start date & time and End date & time.
Are decimals supported?
Yes, you can use decimal values where appropriate.
Related tools
About this tool
Inputs
- Start date & time
- End date & time
Results
- Days
- Hours
- Minutes
If you have ever wondered how the numbers add up, this Time Duration Calculator shows you. Enter your figures and the result appears immediately. Type in start date & time and end date & time. The computation runs immediately, giving you days, hours and minutes. Duration calculations should distinguish between calendar duration (months, years) and exact duration (days, seconds).
Whether you need to calculate duration between two times for a quick check or a thorough analysis, this tool adapts to both. Specify the timezone explicitly — "noon" means different moments in Tokyo, London, and New York. Results are rounded for display; the underlying computation retains full precision. Workday calculations typically exclude weekends (Saturday and Sunday) and may also exclude public holidays. Timezone handling is notoriously tricky — daylight saving transitions can shift dates by a day in edge cases.