Hours to Minutes Converter
Turn decimal hours into minutes and seconds in one step. Type a number and the answer updates instantly — useful when your timesheet shows 2.5 and payroll wants minutes.
How to use this calculator
- Type your time as a decimal — 2.5 for two and a half hours, 0.25 for fifteen minutes.
- The result shows minutes, seconds, and h-and-min — pick whichever format you need.
- Use Copy result to grab the numbers for a timesheet or invoice.
A quick worked example
Say you clocked 2.5 hours on a project and payroll wants it in minutes. Multiply by 60: 2.5 × 60 = 150 minutes. In seconds that's 9,000, and the everyday way of writing it is 2 hours 30 minutes. Same span of time, three different formats.
Where this comes up most: invoicing. If you bill 2.5 hours at $50/hour, that's $125 — straightforward decimal math. But if your tracking software exports 150 minutes, you'd convert to 2.5 hours first, then multiply. This calculator handles either direction.
How it's calculated
For the h-and-min display: the whole-number part is the hours; multiply the decimal part by 60 to get the minutes. So 2.5 → 2 hours + (0.5 × 60) = 2 hours 30 minutes. The calculator handles edge cases like 0.999 hours rounding to 60 minutes cleanly (it shows 1 h 0 min, not 0 h 60 min).
Common conversions
| Decimal hours | Minutes | Seconds | h & min |
|---|---|---|---|
| 0.25 | 15 | 900 | 0 h 15 min |
| 0.50 | 30 | 1,800 | 0 h 30 min |
| 0.75 | 45 | 2,700 | 0 h 45 min |
| 1.00 | 60 | 3,600 | 1 h 0 min |
| 1.25 | 75 | 4,500 | 1 h 15 min |
| 1.50 | 90 | 5,400 | 1 h 30 min |
| 2.50 | 150 | 9,000 | 2 h 30 min |
| 8.00 | 480 | 28,800 | 8 h 0 min |
| 40.00 | 2,400 | 144,000 | 40 h 0 min |
Tips
- Decimal hours and clock time aren't the same. 1.30 on a timesheet means 1.3 hours (78 minutes), not 1 hour 30 minutes. 1 hour 30 minutes is 1.5 decimal hours. This is the most common mistake people make reading timesheets.
- Rounding to the nearest minute is fine for personal use. Payroll often rounds by its own rule — 7-minute rule, 15-minute increments, or quarter-hour rounding. Check your employer's policy if cents matter.
- Going the other direction? Use the hours-to-decimal calculator. Most timesheet software expects decimal input.
Frequently asked questions
How do you convert decimal hours to minutes?
Multiply by 60. 2.5 hours × 60 = 150 minutes. 0.75 hours × 60 = 45 minutes. The same logic works for seconds — multiply by 3,600 instead.
How many minutes are in 1.5 hours?
90 minutes. 1.5 × 60 = 90. That's 1 hour 30 minutes when written in h-and-min format.
Why do payroll timesheets use decimals like 0.75 instead of 45 minutes?
Payroll systems multiply hours by pay rates, and decimals multiply cleanly. "0.75 × $20" gives $15 immediately. Doing the same with "45 minutes × $20" needs an extra conversion every time.
What is 0.5 hours in minutes?
30 minutes. Half an hour. 0.5 × 60 = 30.