Time Duration Calculator
Add and subtract hours and minutes.
Input
This tool runs entirely in your browser. The data you paste or load is never uploaded.
Result
Enter your input, then run the tool.
About this tool
Adds up a list of durations written as 1:30, 2h15 or 45m, with optional minus signs to subtract, and returns the total in hours and minutes, decimal hours and minutes. Ideal for timesheets and video lengths.
How to use it
- Enter one duration per line, such as 1:30, 2h15m, 45m or -0:20.
- Press Calculate.
- Read the total in hours and minutes and in decimal hours.
Frequently asked questions
Which formats are accepted?
H:MM, H:MM:SS, combinations such as 1h30m or 90m, and plain numbers, read as minutes. Start a line with a minus sign to subtract it.
How do I convert to decimal hours for invoicing?
The result shows decimal hours directly: 7:45 is 7.75 hours.
Keep going
Related tools
Date Difference Calculator
Count days, weeks and business days between dates.
Unit Converter
Convert length, weight, volume, speed, area and data units.
Salary Converter
Convert pay between hourly, daily, monthly and yearly.
Percentage Calculator
Solve the three percentage questions in one place.
Percentage Change Calculator
Measure increase or decrease between two values.
Discount Calculator
Find the sale price and the amount saved.