Time Calculator
Add, subtract, and convert time units (hours, minutes, seconds)
Time Calculator
Enter time values and choose an operation
Time 1
Time 2
Result
Time calculation results
Enter time values and click calculate to see results
About Time Calculations
Operations
- • Add Time: Add two time values together
- • Subtract Time: Subtract one time from another
- • Convert: Convert time to different units
Time Units
- • Hours: 1 hour = 60 minutes = 3,600 seconds
- • Minutes: 1 minute = 60 seconds
- • Seconds: Base unit of time
Use Cases
- • Calculate total work hours
- • Add/subtract time intervals
- • Convert between time units
- • Time zone calculations
Frequently Asked Questions
How do I add times together?▾
Convert each time to a common unit (usually seconds), add them, then convert the total back to hours, minutes, and seconds. The calculator handles this automatically.
How do I calculate the time between two clock times?▾
Subtract the earlier time from the later one. For times crossing midnight, add 24 hours to the later time before subtracting so the result stays positive.
How many seconds are in a day?▾
There are 86,400 seconds in a day (60 seconds × 60 minutes × 24 hours). A year has about 31.5 million seconds.
Can I convert decimal hours to hours and minutes?▾
Yes. Multiply the decimal portion by 60 to get minutes. For example, 2.75 hours = 2 hours and 45 minutes.