Time to Decimal Hours Converter
Convert between clock time and decimal hours in both directions — 7:45 to 7.75 for payroll, or 7.75 back to 7:45 for the schedule. The one conversion every timesheet depends on.
How to use this calculator
- Choose the direction: clock time → decimal, or decimal → clock time.
- Enter the value in the matching format (7:45 or 7.75).
- Press Convert — the working is shown so the logic sticks.
Formula used
The whole hours pass through unchanged; only the minutes convert. Quick anchors: 15 min = .25, 30 min = .50, 45 min = .75, 20 min ≈ .33, 40 min ≈ .67.
Example calculation
7:45 → decimal: 45 ÷ 60 = 0.75, so 7:45 = 7.75 hours. At 20/hour that's 155 — whereas mistakenly typing 7.45 would pay only 149.
6.2 hours → clock: 0.2 × 60 = 12 minutes, so 6.2 h = 6:12.
The payroll conversion everyone gets wrong once
Clocks are base-60, payroll is base-10 — and writing 7:45 as "7.45" silently loses 18 minutes, because .45 hours is 27 minutes, not 45. Multiply that by every shift and it's real money.
Rounding rules add a second wrinkle: many employers round to the nearest quarter hour (.25 increments). Knowing the exact decimal lets you check that rounding is applied fairly — over time it should average out, not consistently round against you.
Why use this calculator?
- Fill timesheets in the decimal format payroll systems require, error-free.
- Verify your payslip by converting your logged times independently.
- Convert both directions — schedules speak hh:mm, invoices speak decimal.
Frequently asked questions
What is 7 hours 45 minutes in decimal?
7.75 hours. Divide the minutes by 60 (45 ÷ 60 = 0.75) and add to the whole hours. It is not 7.45 — that would be 7 hours 27 minutes.
What is .33 of an hour?
About 20 minutes (0.33 × 60 = 19.8). The thirds don't convert cleanly: 20 min = .333…, 40 min = .667. Payroll systems usually store two decimals, which is accurate to within half a minute.
How do quarter-hour rounding rules work?
Common practice rounds punches to the nearest 15 minutes: 8:07 becomes 8:00, 8:08 becomes 8:15. Over many shifts this should be neutral; labor rules in many places require that rounding not systematically favor the employer.