dopecalc

Hours Calculator

Compute elapsed hours and minutes between two clock times. Add multiple time entries to sum total hours for timesheets or project tracking.

Entry 1

Elapsed: --

About this Calculator

Compute elapsed hours and minutes between two clock times. Add multiple time entries to sum total hours for timesheets or project tracking.

Formula & Calculations

Formula

Elapsed = (End hours * 60 + End minutes) - (Start hours * 60 + Start minutes)
Where:
  • HH=Hour in 24-hour format (0–23)
  • MM=Minutes (0–59)

Assumptions

  • Times are entered in 24-hour format (HH:MM).
  • If the end time is earlier than the start time, it is assumed to be on the following day.
  • All entries are summed to produce a grand total.

Calculation Examples

Example 1

Inputs:Start: 09:00, End: 17:30
Result:8 hours, 30 minutes

17:30 minus 09:00 equals 8.5 hours (8 hours and 30 minutes).

Example 2

Inputs:Entry 1: 08:00–12:00, Entry 2: 13:00–17:00. Calculate total.
Result:8 hours, 0 minutes (Grand Total)

Entry 1 = 4 hours, Entry 2 = 4 hours. Sum = 8 hours total.

Frequently Asked Questions

How do I handle overnight shifts?

Enter a start time (e.g. 22:00) and an end time (e.g. 06:00). The calculator automatically detects overnight spans and calculates the correct elapsed time.

Can I export the total as decimal hours?

The results are displayed in hours and minutes format. To get decimal hours, divide the total minutes by 60.