Hours Calculator
Decimal Hours
Understanding Hours Calculations
Common Applications
Work & Payroll
- Calculate weekly work hours
- Track overtime
- Sum timesheet entries
- Calculate billable hours
Project Management
- Estimate task duration
- Track project time
- Calculate labor costs
- Plan resource allocation
Converting Hours and Minutes
Minutes to Decimal Hours: Minutes / 60
Decimal Hours to Minutes: Decimal × 60
Example: 45 min = 45/60 = 0.75 hours
Example: 2.25 hours = 2 hrs 15 min
Tip: Quick Conversion
For quick mental math, remember that each 15-minute increment equals 0.25 hours. So 1:15 = 1.25, 1:30 = 1.50, 1:45 = 1.75, and so on.
Frequently Asked Questions
How do I convert minutes to decimal hours?
Divide minutes by 60. For example: 15 min = 0.25 hours, 30 min = 0.50 hours, 45 min = 0.75 hours. For 1 hour 20 minutes: 20/60 = 0.33, so it equals 1.33 decimal hours.
How do I add hours and minutes together?
Add hours separately from minutes. If minutes exceed 60, convert to hours. For example: 2:45 + 3:30 = 5:75 = 6:15 (since 75 min = 1 hr 15 min).
How many work hours are in a year?
A full-time employee typically works 2,080 hours per year (40 hours/week x 52 weeks). After accounting for holidays and vacation (average 15 days), actual work hours are about 1,880-1,960.
What is the difference between elapsed time and clock time?
Elapsed time is the duration between two points (e.g., 3 hours 45 minutes). Clock time refers to specific times of day (e.g., 9:00 AM to 12:45 PM). This calculator helps convert between both formats.