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Time Calculator
Add and subtract hours, minutes, and seconds. Calculate time duration between two times. Convert time to decimal hours.
Days
822
Weeks
117
Months
27
Years
2
How to Use the Time Calculator
Enter your values above for an instant result. This tool uses verified formulas and is optimised for users in USA, Canada, UK, Australia. All calculations happen in your browser — your data is never sent to our servers.
Frequently Asked Questions
How do you add hours and minutes?
Add minutes first. If total > 60, carry over to hours. Example: 2h 45m + 1h 30m = 4h 15m (75 minutes = 1h 15m).