Hours to Decimal Calculator
Convert hours and minutes to decimal hours — built for payroll, timesheets, invoicing and hourly billing.
1h 45m=1.7500 decimal hours
What is decimal time?
Decimal time expresses a duration as a single number instead of hours and minutes. For example, 1 hour and 45 minutes is written as 1.75.
Payroll, accounting and time-tracking systems use decimal hours because they multiply cleanly with an hourly rate. Multiplying7:45 by an hourly rate doesn’t work, but multiplying 7.75 does.
The Hours to Decimal Calculator above does the conversion in real time so you can copy the number straight into your timesheet, invoice, or spreadsheet.
- 15 min0.25
- 30 min0.5
- 45 min0.75
- 1 h 30 m1.5
- 7 h 45 m7.75
- 8 h 20 m8.3333
How to convert time to decimal
The math is simple: divide minutes by 60, and (if needed) seconds by 3600. Add everything to the whole number of hours.
Start with whole hours
Take the number of full hours as-is. For 2h 30m, that’s 2.
Divide minutes by 60
30 ÷ 60 = 0.5. This gives the fractional hour portion.
Add them together
2 + 0.5 = 2.5 decimal hours. That’s your payroll-ready number.
Minutes to decimal hours conversion table
A quick reference for converting common minute values to decimal hours. Most payroll systems round to 2 decimals.
| Minutes | Decimal hours |
|---|---|
| 5 min | 0.0833 |
| 10 min | 0.1667 |
| 15 min | 0.25 |
| 20 min | 0.3333 |
| 25 min | 0.4167 |
| 30 min | 0.5 |
| 35 min | 0.5833 |
| 40 min | 0.6667 |
| 45 min | 0.75 |
| 50 min | 0.8333 |
| 55 min | 0.9167 |
| 60 min | 1.0 |
Who uses decimal hours?
Any time an hourly duration is multiplied by a rate — wages, billable time, utilization — decimal hours are the standard format.
Payroll & HR teams
Convert timesheet entries from HH:MM into decimal hours so payroll systems can multiply by wage rates without rounding errors.
Freelancers & contractors
Bill clients accurately. Convert tracked time like 2:45 into 2.75 before invoicing at your hourly rate.
Accountants & bookkeepers
Normalize timesheets from multiple sources before importing into accounting software or job-costing spreadsheets.
Small business owners
Pay hourly employees fairly. Convert shift times into decimal hours for a single source of truth across payroll runs.
Project managers
Track team utilization and project hours in decimal format for cleaner reports and capacity planning.
Consultants & agencies
Match your time-tracking output to the decimal format required by most client billing and ERP systems.
Frequently asked questions
Common questions about converting hours and minutes to decimal hours.
Divide the number of minutes by 60. For example, 15 minutes ÷ 60 = 0.25 hours, and 45 minutes ÷ 60 = 0.75 hours. The Hours to Decimal Calculator above does this instantly for any HH:MM value.
1 hour 20 minutes equals 1.3333 decimal hours (rounded: 1.33). The calculation is 1 + (20 ÷ 60) = 1.3333.
7 hours 30 minutes equals 7.5 decimal hours. That is 7 + (30 ÷ 60) = 7.5.
Payroll, accounting and time-tracking systems multiply hours by hourly rates. Decimal hours (like 7.75) multiply cleanly with dollars and cents, while “7:45” does not. Converting to decimal removes errors and makes reports easier to audit.
Take the whole number as hours, then multiply the decimal portion by 60 to get minutes. Example: 2.75 → 2 hours and (0.75 × 60) = 45 minutes, so 2h 45m.
Yes. The calculator runs entirely in your browser. There is no signup, no data upload, and no cost — it’s free for personal and business use.
Yes. Toggle “Include seconds” to add a seconds field. Decimal hours are then computed as hours + minutes/60 + seconds/3600.
The math is exact — the formula is deterministic. You can view results at 2, 3, or 4 decimal places. Most payroll and invoicing systems use 2 decimal places.