Hours, Minutes & Seconds Calculator
Add and subtract multiple "HH:MM:SS" values to get a combined total. Mix add and subtract rows freely and instantly see the result as hours, minutes and seconds, plus totals in seconds, minutes, and hours.
Input
Sign
＋ Add
Sign
＋ Add
Result
Total
2h15m30s
Total (seconds)
8,130 sec
Total (minutes)
135.5 min
Total (hours)
2.2583 hr
How it works
- Enter hours, minutes, and seconds for each row and the tool automatically combines every row into a total shown as hours, minutes and seconds.
- The "Sign" selector on each row switches between adding and subtracting, so you can mix operations such as subtracting a break from total work time in a single calculation.
- Use "Add row to add" and "Add row to subtract" to add as many rows as you like, and remove any unwanted row with its delete button.
- The total is also shown in seconds, minutes, and decimal hours, so you can choose the unit that fits your purpose.
- Enter whole numbers of 0 or more in each field. Blank fields are treated as 0, and values over 60 minutes or 60 seconds are carried over automatically.
- When subtraction outweighs addition and the total is negative, a minus sign is shown at the start.
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Hours, Minutes & Seconds Calculator