Time to Decimal Converter
Convert standard hours and minutes into a single decimal number, making it easy to calculate your pay or log time in billing software.
Decimal Time Converter
Decimal Hours
Why convert time to decimals?
When you bill by the hour, you multiply time by a rate — and that only works cleanly if your time is a decimal. “1 hour and 45 minutes” is not 1.45 hours; it is 1.75 hours. Getting this wrong is a common cause of under- or over-billing on invoices and payroll timesheets.
The rule is simple: divide the minutes by 60. So 15 minutes is 0.25, 30 minutes is 0.5, and 45 minutes is 0.75. The converter above does it instantly for any value, including awkward ones like 20 or 50 minutes.
Once your time is in decimal form, plug it into the hourly rate calculator to see exactly what a session is worth, and read our time tracking strategies for ways to log time more accurately in the first place.
Frequently asked questions
How do I convert minutes to decimal hours?
Divide the minutes by 60. So 15 minutes = 0.25, 30 minutes = 0.5, 45 minutes = 0.75, and 20 minutes ≈ 0.33. The converter above does it instantly for any value.
Why isn't 1 hour 30 minutes equal to 1.30?
Because time is base-60, not base-100. 30 minutes is half an hour, so 1 hour 30 minutes is 1.5 decimal hours, not 1.30. Billing it as "1.30" would underpay you by 20 minutes on every entry like it.
When do I actually need decimal time?
Any time you multiply time by a rate. Invoices, payroll timesheets, and most billing software expect decimal hours rather than hours-and-minutes, so converting first keeps your totals accurate.
Is the converter free and private?
Yes — it runs entirely in your browser with no signup, and nothing you type is stored or sent to a server.
Tired of converting time manually? Automate it.
TimeBill tracks your time in the background and automatically generates decimal-accurate timesheets and beautiful PDF invoices for your clients.
- Track time by client, project and task.
- Create professional PDF invoices and timesheets in seconds.
- Export projects data and CSV reports.
- Manage time-based and fixed-price projects.
- Works offline — no login, no cloud.
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