Decimal Hours Converter — Minutes to Decimal
Convert between HH:MM time (the format people naturally think in, like 7 hours 30 minutes) and decimal hours (the format most payroll and invoicing systems expect, like 7.5) — both directions, live. Paste a whole list of shift lengths into the batch box to convert and total them all at once.
About the decimal hours converter
This tool converts between HH:MM time (like 7 hours 30 minutes) and decimal hours (like 7.5) — the format most payroll and invoicing systems expect — in both directions, plus batch conversion for a whole list of times at once.
People naturally think in hours and minutes ("7 hours 30 minutes"), but payroll, invoicing and spreadsheet systems almost always want decimal hours ("7.5") so they can be summed and multiplied by a rate. This converter switches between the two formats instantly in either direction, and includes a batch mode: paste a whole list of shift lengths (one per line) and get every one converted to decimal hours at once, with a running total.
Minutes to decimal hours
| Minutes | Decimal | Example |
|---|---|---|
| 15 min | .25 | 1:15 = 1.25 |
| 30 min | .5 | 1:30 = 1.5 |
| 45 min | .75 | 1:45 = 1.75 |
| 10 min | .17 (approx) | 1:10 ≈ 1.17 |
When to use it
- Converting a single shift length for an invoice line item.
- Batch-converting a week or month of shift lengths at once.
- Cross-checking a payroll calculation that uses decimal hours.
How to use it
- Enter a time in HH:MM format, or a decimal number of hours — the other field updates live.
- For multiple values, paste one time per line into the batch box and read the converted list plus the running total.
- Copy the results with one click.
Tips
- Decimal hours round to two decimal places for readability; for exact payroll figures, use the batch total rather than re-adding rounded values.
- The reference table covers the most common quarter-hour conversions used in most timesheets.
FAQ
What are decimal hours?
Minutes expressed as a fraction of an hour — 30 minutes becomes 0.5, 45 minutes becomes 0.75 — which is the format most payroll and invoicing systems expect instead of "HH:MM".
Can I convert a whole list of times at once?
Yes — paste one time per line into the batch box and every line is converted to decimal hours, with a running total shown below.
Why is 10 minutes not an exact decimal?
10 minutes is 1/6 of an hour, which is 0.1666... repeating — shown rounded to 0.17. Quarter-hour values (15/30/45 min) convert to exact decimals.
What is 45 minutes in decimal hours?
0.75. Minutes are out of 60 rather than 100, so you divide by 60: 45 divided by 60 is 0.75. This is why 45 minutes is not 0.45, which is the single most common timesheet mistake.
What are the common decimal conversions?
15 minutes is 0.25, 30 minutes is 0.50, and 45 minutes is 0.75. Those three cover most timesheets. For anything else, divide the minutes by 60.
Can I convert a whole timesheet at once?
Yes — paste or enter a list of times and they all convert together with a running total, rather than converting each row one at a time.
Why does payroll software want decimal hours?
Because decimal hours multiply cleanly by an hourly rate. 7.75 hours times a rate is simple arithmetic, whereas 7 hours 45 minutes has to be converted first anyway.
How do I convert hours to decimal?
Divide the minutes by 60 and add them to the hours: 7 hours 45 minutes is 7 + 45/60 = 7.75 hours. That is the hours to decimal format most payroll and timesheet systems ask for.