Time Calculator
Add or subtract hours, minutes and seconds.
Result
Results are estimates for general information only and are not professional advice.
Adding and subtracting time
This calculator adds or subtracts two durations given in hours, minutes and seconds, and returns the result normalised into hours, minutes and seconds — handy for schedules, cooking and time tracking.
Frequently Asked Questions
What is the Time Calculator?
Add or subtract hours, minutes and seconds. It runs instantly in your browser and is completely free.
Is the Time Calculator free and does it require signup?
Yes. Every calculator on Calculatis is 100% free with no registration, and the values you enter are never stored.
How accurate is the Time Calculator?
It uses standard, widely-accepted formulas. Results are reliable estimates for general use and are not a substitute for professional advice.