8 Hours 30 Minutes in Decimal

8 hours and 30 minutes equals 8.50 decimal hours.

Step-by-step calculation

1. Keep the whole hours: 8.
2. Convert the minutes: 30 ÷ 60 = 0.5000.
3. Add the values: 8 + 0.5000 = 8.5000.
4. Rounded to two decimal places, the result is 8.50 decimal hours.

Payroll example

At $20 per hour, 8 hours 30 minutes produces gross base pay of $170.00 before taxes, deductions, overtime, or other adjustments. The calculation uses the unrounded value: 8.5000 × $20. This avoids the small difference that can result from multiplying a displayed two-decimal value.

Excel formula

If the whole hours are in A2 and minutes are in B2, use =A2+B2/60. For this example, =8+30/60 returns 8.5000. Format the result as a number rather than a clock time.

Frequently asked questions