Intervals uses the decimal format to display time on weekly timesheets, reports, invoices, and more. With exception to the timers, decimal hours are the only option available when viewing your time tracking data.
If you need to convert time from one format to another, the easiest solution is to use our calculator to convert time between hours, minutes, and decimal.
How do I manually convert time between hours, minutes, and decimal?
As mentioned above, our calculator is the fastest way to convert time. But if you’d like to manually convert your time, or you’re just interested in the math behind it, here’s how to do it.
Convert hours and minutes to decimal
In the steps below, we’ll convert 2 hours and 15 minutes to decimal hours.
- Divide the minutes by 60:
15 minutes รท 60 = .25 - Add the hours to the result of the first step:
2 hours + .25 = 2.25 - The result is the decimal time:
2.25 hours
Why does Intervals use decimal hours?
There are five main reasons why Intervals displays time using decimal hours:
- Skimmability
Decimal time is much easier to skim through than the traditional hours-and-minutes format. This quick readability helps you swiftly review a weekly timesheet or check how much time has been spent on a project. - Consistency
Decimal time offers a consistent and easy-to-read format, which is especially helpful when you’re looking at weekly timesheets, invoices, dashboards, and reports. With everything in the same format, it’s much simpler to compare and add up time entries. - Simplification
Decimal time streamlines the entire process of time tracking and reporting. It makes it easier to track time, generate comprehensive reports, and analyze data efficiently. - Accuracy
Decimal time offers more accuracy than converting time from hours and minutes. By eliminating the need for manual conversion, you reduce the chance of errors, ensuring your time tracking is spot on. - Hourly Billing
If your business bills by the hour, decimal time simplifies the calculation of how much to bill for a specific amount of time and makes invoices clearer and more straightforward.