Work Hours
Total hours worked and estimated pay.
The Work Hours Calculator helps employees, freelancers, and employers track total hours worked and estimate gross pay. Enter your daily start and end times, subtract break durations, set your hourly rate, and get weekly or monthly totals instantly. Whether you're filling out a timesheet, verifying payroll accuracy, invoicing a client for billable hours, or tracking overtime, this tool handles the math. Supports multiple days in a single calculation and automatically computes overtime hours beyond your configured weekly threshold.
Work Hours
Examples
Standard Work Week (5 Days)
9:00 AM–5:00 PM with 1-hour unpaid lunch, 5 days at $25/hr.
→ 35 hours worked, $875 gross pay
Freelance Project — Tracked Hours
3 days: 6.5 hrs, 7 hrs, 5.5 hrs at $80/hr billing rate.
→ 19 hours total, $1,520 billable
Weekly Hours with Overtime
9:00–6:30 PM with 30 min lunch, 5 days. Overtime threshold: 40 hrs.
→ 45 hours worked: 40 regular hrs ($1,200) + 5 overtime hrs at 1.5× ($225) = $1,425 total
Part-Time Schedule Verification
4 days, varying hours: 4h, 5h, 6h, 4h at $18/hr.
→ 19 hours total, $342 gross pay
Tips
- ✓Record your times daily — memory fades by end of week, and errors in timesheets can be hard to dispute.
- ✓Check your employment contract for the exact overtime threshold and whether daily overtime applies.
- ✓For client invoicing, always round to the nearest 15 minutes (0.25 hour) per your contract terms.
- ✓Keep a separate log per project/client for accurate invoicing when working on multiple engagements.
Frequently Asked Questions
How do I calculate my total work hours for the week?
Enter your start and end times for each work day and subtract any break time. Sum the hours across all days. This calculator does it automatically — add each day's hours and it totals them for you.
How is overtime calculated?
In the US, federal overtime law (FLSA) requires 1.5× pay for hours worked beyond 40 per week. Some states have daily overtime thresholds (e.g., California: over 8 hours/day). In Korea and Japan, overtime rules differ — consult your local labor law.
Should I include breaks in my work hours?
Unpaid lunch breaks should not be included in billable or paid hours. Short paid rest breaks (10–15 min) are typically counted as work time. Enter only unpaid break time in the break deduction field.
How do I track hours for freelance invoicing?
Enter each work session's start and end time to get the total billable hours, then multiply by your hourly rate. Keep a running log per project, and use this tool to quickly verify totals before invoicing.
What is the standard number of work hours per year?
A standard full-time year in the US is 2,080 hours (40 hours/week × 52 weeks). In Korea, the legal maximum is 52 hours/week (40 regular + 12 overtime). In Japan, it is typically 40 hours/week with restrictions on overtime.
How do I convert decimal hours to hours and minutes?
The decimal part represents a fraction of an hour. Example: 7.75 hours = 7 hours + (0.75 × 60) = 7 hours 45 minutes. Conversely, 7 hrs 30 min = 7 + 30/60 = 7.5 hours.