The Time Calculator helps you add or subtract hours and minutes and convert total minutes into hours and minutes. Useful for timesheets, study plans, travel, and project tracking.
Time Calculator
Add or subtract two time values. Blank fields count as 0.
Add or Subtract Time from a Date
Start from a date/time, then add or subtract days, hours, minutes, and seconds.
How to Use
- Enter the first duration (hours and minutes).
- Enter the second duration.
- Choose Add or Subtract, then Calculate.
- Or convert a total number of minutes into hours and minutes.
Formula
Total minutes = (hours × 60) + minutes. Result hours = floor(total / 60), remaining minutes = total mod 60.
Worked Example
Example: 2h 45m + 1h 30m = 4h 15m. 150 minutes = 2h 30m.
What the Result Means
Use the result for schedules, payroll estimates, or study blocks. It does not account for time zones or calendar dates.
Important Notes & Limitations
- Negative results indicate the second duration was larger when subtracting.
- This tool does not convert time zones or daylight saving.
Frequently Asked Questions
Can I calculate overnight shifts?
Add the hours worked; for clock times spanning midnight use the Date Calculator together with this tool.
Does it support seconds?
This version focuses on hours and minutes for everyday use.
Is the result exact?
Yes for whole minutes; enter whole numbers for best results.
Who is this for?
Students, employees tracking hours, and anyone planning timed tasks.
Related Calculators
See also: Date Calculator, Age Calculator, Time Calculator.
Disclaimer: Results are approximate and for educational and informational purposes only. They are not financial, tax, medical, or legal advice. Verify important decisions with a qualified professional.