Time Duration Calculator

Time Duration Calculator - calculate duration, hours, total minutes instantly with formulas, worked steps and explanations.

Calculated in UTC. Local time zones, daylight saving and regional calendars may shift the result by a day.

Time Duration Calculator inputs
Duration 8 hours, 30 minutes
Hours
8.50
Total Minutes
510
Decimal Hours
8.50
Total Seconds
30,600
Duration After Break
8 hours

Duration = End - Start - Break
Start
Start Time
Break
Break (minutes)

With start time 09:00, end time 17:30, break (minutes) 30, end time is next day 0, the duration works out to 8 hours, 30 minutes.

How is Time Duration calculated?

Time Duration Calculator uses the formula Duration = End - Start - Break. Enter your own figures above and the result updates instantly in your browser.

What information do I need to use this calculator?

You need start time, end time, break (minutes) and end time is next day. Every field starts with a realistic default so you can see how the calculation behaves before entering your own numbers.

What do the results show?

The headline figure is duration. Alongside it you also get hours, total minutes, decimal hours, so you can see the full picture rather than a single number.