Calculators
Time Calculator
Calculate practical values with Time Calculator. Free, fast and mobile-friendly. No sign-up required, and calculations or text processing run locally in your browser whenever possible.
Calculate time between two times or add and subtract minutes and hours.
Time Calculator
Start09:00
End17:30
Minutes510
For same-day ranges. If the end time is earlier than the start time, the duration is shown as zero.
Time difference8 hr 30 min
same-day duration
510 minutes between 09:00 and 17:30.
What is time calculator?
Use this time calculator for schedules, work blocks, appointments and quick time arithmetic.
How to use time calculator
- Enter the values required by the Time Calculator.
- Check the instant calculation result.
- Copy the result for your notes, quote, invoice or planning task.
When to use time calculator
- Calculate same-day duration
- Add minutes to a start time
- Subtract hours from a clock time
- Plan schedule blocks
FAQ
Can it calculate overnight durations?
This first version is for same-day ranges. If the end time is earlier than the start time, it shows zero.
Can I add hours to a time?
Yes. Choose add or subtract and select minutes or hours as the unit.