Time Calculator

Time Calculator

This time calculator adds together any number of hours-and-minutes values to give a total. Use the "Add time" button to insert as many rows as you need — the result updates automatically as you type. The total is shown in three formats: hours and minutes, decimal hours, and total minutes — pick whichever you need.

Add Hours and Minutes

Adding time values is awkward by hand because minutes don't roll over at 100 — they roll over at 60. This hours and minutes calculator handles the carry-over automatically: enter 2h 45m + 1h 30m and you get 4h 15m instantly. There's no upper limit on hours, and minutes are clamped to 0–59 per row.

Time Calculator: Minutes to Hours

The decimal hours output is what you need for payroll, invoicing, or anywhere a total hours calculator result has to be a single number — for example, 7 hours 15 minutes equals 7.25 decimal hours. The total minutes line is useful when working with apps or spreadsheets that store durations purely in minutes. Enter an hourly rate to also see the total amount payable for the time entered.

When to Use This vs. Time Duration

This online time calculator sums up durations you already have — like time entries from a tracking app. If instead you need to compute the duration between two times of day (start and end), use the Time Duration Calculator which handles overnight spans and break subtraction.

Related Tools

For interval timing, see the Online Timer or Stopwatch. To convert between 12-hour and 24-hour time, use the Military Time Converter.