Decimal Hours Calculator
Convert minutes into decimal hours for payroll software, billing, and time tracking. Includes our complete 1–60 minute reference conversion chart.
Quick Answer: Decimal Hours Conversion Formula
To convert time in hours and minutes to decimal hours, divide the minutes by 60 and add the result to whole hours:
• Quarter-Hour Milestones: 15 min = 0.25h | 30 min = 0.50h | 45 min = 0.75h | 60 min = 1.00h.
Total Work Hours
35:00
35.00 decimal hrs
Regular Hours
35:00
35.00 decimal hrs
Overtime Hours
0:00
0.00 decimal hrs
Days Worked
5 days
Avg: 7:00/day (7.00h)
Weekly overtime threshold: 40 hours/week (Multiplier: 1.5x). Based on standard US FLSA rules; specific state or contract rules (e.g. CA daily overtime) may apply.
Minutes to Decimal Hours Conversion Chart (1–60 min)
Use this lookup table to convert any minute value directly into hundredths of an hour for payroll systems:
Federal 15-Minute Rounding Regulations
Under the US Fair Labor Standards Act (FLSA), the Department of Labor regulates employer time-rounding practices:
- 7-Minute Rule (29 CFR § 785.48(b)): Employers may round employee starting and stopping times to the nearest 5 minutes, 1/10th of an hour (6 minutes), or 1/4th of an hour (15 minutes). For 15-minute rounding, 1 to 7 minutes round down; 8 to 14 minutes round up.
- Neutrality Mandate: Rounding policies must average out over time so that employees are fully compensated for all time actually worked.
Frequently Asked Questions
How do you convert minutes into decimal hours?
Divide the number of minutes by 60. For example: 15 minutes ÷ 60 = 0.25 hours; 30 minutes ÷ 60 = 0.50 hours; 45 minutes ÷ 60 = 0.75 hours. To convert whole hours and minutes (e.g. 7h 36m), keep the 7 hours and add (36 ÷ 60 = 0.60) to get 7.60 decimal hours.
Why does payroll software use decimal hours instead of hours and minutes?
Standard payroll systems require decimal numbers so that total time can be directly multiplied by an employee's hourly pay rate. For example, 8 hours and 30 minutes multiplied by $20/hour cannot be entered as 8:30 × 20; it must be entered as 8.50 × 20 = $170.00.
How do you convert decimal hours back into minutes?
Multiply the decimal fraction by 60. For example, in 6.40 decimal hours: multiply 0.40 × 60 = 24 minutes. So 6.40 decimal hours is exactly 6 hours and 24 minutes.
What is the 15-minute payroll rounding rule (7-minute rule)?
Under federal regulation 29 CFR § 785.48(b), employers may round employee time to the nearest quarter hour (15 minutes). Times between 1 and 7 minutes round down to the previous quarter hour (:00, :15, :30, :45), while times between 8 and 14 minutes round up to the next quarter hour.
What are the most common payroll decimal conversions?
The most common intervals are quarter hours: 15 minutes = 0.25 hours, 30 minutes = 0.50 hours, 45 minutes = 0.75 hours, and 60 minutes = 1.00 hour.
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