How Many Hours Have You Worked?
Enter your daily hours and number of days worked to get your total hours for any period — ideal for timesheets, invoices, and project planning.
A standard full-time year is 2,080 hours — but most workers log closer to 1,900 effective hours after leave and holidays.
2,080
standard work hours in a year at 8 hrs/day, 5 days/week
4–6 hr
daily peak productive capacity for most knowledge workers
15 min
minimum billing increment used by most professional service firms
Getting the most from your hours
Use this for contractor invoicing
Freelancers and contractors should log hours at the project level, not the week level. Enter the hours worked on a specific project and the number of days it spanned to get total billable hours. Multiply by your rate to generate invoice totals instantly.
Convert hours to days and weeks
Use this calculator for scheduling and project planning. If a project requires 120 hours of work and you have 3 team members at 6 hours/day each, total capacity is 18 hours/day — meaning the project takes about 6.7 working days. Capacity planning prevents under- and over-delivery commitments.
Track actual vs contracted hours
Many fixed-price contracts are based on estimated hours that are rarely tracked against actuals. Running even a rough hours-worked log reveals whether you're over-servicing clients. If you consistently work 30% more hours than estimated, your effective rate is 30% lower than quoted — adjust your pricing accordingly.
How the Work Hours Calculator Works
Formula
Total Hours = Hours Per Day × Days Worked\nAverage Per Day = Total Hours ÷ Days WorkedThis is a direct multiplication calculator. Enter your net daily hours (after breaks) and the number of days worked to get a total. It works for any period — a single week, a billing period, a project, or an entire year.
Use decimal values for partial hours: 7.5 = 7 hours 30 minutes, 8.25 = 8 hours 15 minutes.