Free online tool
Time calculator
Add and subtract hours and minutes, one line at a time. The total is in hours and minutes and in decimal hours, for timesheets and payroll.
Total
0:00
0.00 hours · 0 minutes
What you can type
- 7:30 or 7h 30m
- Seven and a half hours
- 90m
- Ninety minutes, the same as 1:30
- 1.5
- A number on its own is hours
- 1:02:30
- Hours, minutes and seconds
- 9:00-17:30
- The time between two clock times
- 10pm-6am
- Across midnight, into the next day
Enter moves to the next line, and Backspace on an empty line removes it. The tape is kept in this browser until you clear it.
Get Stund for your phone
Stund is this calculator as an app. Type 7 h 30 m with unit keys, fix any line on the tape where it stands, and add up clock times and durations on the same tape. Free, with no ads and no account. Stund Pro, a one-time purchase, adds decimal hours and pay at an hourly rate, saved tapes and sharing.
Coming soon to the App Store.
Questions
How do I add hours and minutes?
Type each time on its own line, as 7:30, 7h 30m or 7.5, and the total appears below. Minutes carry over into hours: 0:45 and 0:30 make 1:15.
How do I convert minutes to decimal hours?
Divide the minutes by 60: 15 minutes is 0.25 hours, 30 minutes is 0.5 and 45 minutes is 0.75, so 7:45 is 7.75 hours. The calculator shows the total in decimal hours under the hours and minutes.
How do I work out the hours between two times?
Type the start and the end on one line, like 9:00-17:30 or 10pm-6am. An end earlier than the start counts into the next day. Without am or pm, a range like 9-5 is read as 9:00 to 17:00.
How do I take off a break?
Tap the plus sign at the start of a line to make it a minus, and that line comes off the total: 9:00-17:30 and minus 30m make 8:00.
Can the total go over 24 hours?
Yes. The total is a length of time, not a time of day, so a week of shifts adds up to 40:00 rather than starting again at midnight.