How to Convert Time to Decimal Hours for Payroll

A timesheet says an employee worked 7 hours and 45 minutes. Multiply that directly by an hourly rate and you get the wrong paycheck, because 45 minutes isn't 0.45 of an hour — it's 0.75. Decimal conversion exists to fix exactly this gap between how time is recorded and how pay is calculated.

The conversion, step by step

Take the minutes portion of the time and divide by 60, then add it to the whole hours. 7 hours 45 minutes becomes 7 + (45 ÷ 60) = 7 + 0.75 = 7.75 decimal hours. Seconds follow the same pattern, divided by 3,600 instead of 60.

Why this matters for hourly pay

Decimal hours × hourly rate = pay, cleanly. 7.75 hours at $22/hour is $170.50. Try that same multiplication with 7:45 as a raw number and the result is off by a meaningful margin — enough to matter over a pay period, and enough to trigger a payroll correction if no one catches it.

Where to round

Some payroll policies round punches to the nearest quarter hour before converting; others keep the exact decimal. Decide which your organization uses before running a full pay period through any converter, and apply it consistently — mixing rounded and exact values across a timesheet is a common source of small discrepancies.