Time Duration Calculator

Time Duration Calculator

This time duration calculator finds the exact duration between any two times. Enter a start time and end time for each entry — the tool calculates the individual duration per row and the running total automatically. Add as many time entries as needed using the "Add time entry" button, making it easy to track multiple work shifts, study blocks, or activity periods in one place.

Hours Between Two Times

To calculate hours between two times, enter your start and end times in any row. This hour duration calculator handles overnight spans (for example, 10 PM to 6 AM) and shows results in both hours-and-minutes and decimal hours. The time difference calculator updates instantly as you type — no button press required.

Decimal Hours for Payroll

Decimal hours make payroll and invoicing straightforward: 7 hours 45 minutes equals 7.75 decimal hours. Enter your hourly rate in the rate field at the bottom to instantly calculate total pay based on your hours worked. This makes the tool useful as a basic hours worked calculator for freelancers, hourly employees, and contractors.

Time Difference Converter

Beyond shift tracking, this time difference converter works for any pair of times — meeting lengths, race splits, cooking intervals, or lesson periods. The 24h/12h toggle lets you enter times in whichever format feels natural, with the preference remembered between sessions.

Related Tools

To calculate the number of days between two calendar dates, use the Days Between Dates calculator. For running countdowns or interval timing, see the Online Timer or Stopwatch.