Time Calculator
Add or subtract hours, minutes, and seconds, or calculate the exact amount of time between two times with this simple online time calculator.
Calculate Time
Choose what you want to calculate, enter the times, and get an instant result.
The Time Calculator helps you add or subtract hours, minutes, and seconds from a time. You can also calculate the exact time interval between two times, including periods that cross midnight.
How to Use a Time Calculator
Select whether you want to add or subtract time or calculate the time between two times. Enter the required values and the calculator will return the result in an easy-to-read format.
Adding or Subtracting Time
Enter a starting time, choose hours, minutes, or seconds, enter the amount, and select whether to add or subtract the time. This is useful when planning schedules, appointments, work sessions, and task durations.
Calculating Time Between Two Times
Enter a start time and an end time to find the duration between them. If the end time occurs after midnight, enable the next-day option to calculate the correct interval.
Hours, Minutes, and Seconds
Time can be represented using different units. One hour contains 60 minutes, and one minute contains 60 seconds. The calculator converts your input into the appropriate time value automatically.
Common Uses for a Time Calculator
Time calculations are useful for work schedules, project planning, meeting durations, travel planning, shift tracking, study sessions, exercise routines, and everyday time management.
Frequently Asked Questions
How do I add hours to a time?
Enter the starting time, choose Hours, enter the number of hours, and select Add Time. The calculator returns the resulting time.
Can I subtract minutes from a time?
Yes. Select Subtract Time and choose Minutes as the unit to subtract minutes from your starting time.
Can I calculate the time between two times?
Yes. Select Time Between, enter the start and end times, and the calculator will show the duration between them.
Can this calculator calculate time across midnight?
Yes. Enable the option indicating that the end time is on the next day when the time interval crosses midnight.
How many minutes are in an hour?
There are 60 minutes in one hour.
How many seconds are in a minute?
There are 60 seconds in one minute.