About the Time to Decimal Calculator
What is the Time to Decimal Calculator?
Payroll and billing software needs hours as decimals: 7 hours 45 minutes is 7.75 hours. This time to decimal calculator converts both ways.
It also shows decimal minutes, total seconds and decimal days.
How to use the Time to Decimal Calculator
- Convert (sample: Hours : minutes : seconds → decimal hours)
- Hours (sample: 7)
- Minutes (sample: 45)
- Seconds (sample: 0)
- Decimal Hours (sample: 7.75)
- Press Convert Time (results also refresh as you type). The result card shows the Result, along with Decimal hours, Hours : minutes : seconds, Decimal minutes and Total seconds.
Formula used
Decimal hours = Hours + Minutes ÷ 60 + Seconds ÷ 3,600
Worked example
These are the sample values already filled in the calculator above, and the result it returns for them:
| Input | Sample value |
|---|---|
| Convert | Hours : minutes : seconds → decimal hours |
| Hours | 7 |
| Minutes | 45 |
| Seconds | 0 |
| Decimal Hours | 7.75 |
| Result | Value |
|---|---|
| Result | 7.75 hours |
| Decimal hours | 7.75 |
| Hours : minutes : seconds | 7:45:00 |
| Decimal minutes | 465 |
| Total seconds | 27,900 |
| Decimal days | 0.3229 |
Minutes to decimal quick reference
15 min = 0.25 h · 20 min = 0.333 h · 30 min = 0.5 h · 40 min = 0.667 h · 45 min = 0.75 h · 6 min = 0.1 h.
Tips for using the Time to Decimal Calculator
- 0.1 hour is 6 minutes – many billing systems round to this unit.
- Do not write 7.45 for 7 hours 45 minutes; it means 7 hours 27 minutes.