How this calculator works
Tracking work hours accurately is essential for freelancers billing by the hour, contractors on time-and-materials engagements, and employees verifying their pay. This time card calculator handles a full work week, with break deductions, daily hour totals, and a weekly pay calculation based on your rate. Use it to verify paychecks, bill clients, or maintain records for tax purposes.
Enter clock-in and clock-out times for up to 2 shifts per day, plus break duration. The calculator computes total hours per day, applying overtime rules (1.5x after 8 hours/day in some states, or after 40 hours/week federally). Enter your hourly rate to see total pay for the week, including any overtime premium.
For freelancers billing clients, save the completed time card as documentation with your invoice. For employees, compare the calculator's output to your pay stub — discrepancies may indicate payroll errors. Maintaining your own time records is also protection in wage disputes; FLSA gives employers 2 years of liability for unintentional violations, 3 years for willful ones.
The formula
Daily Hours = (Clock Out - Clock In) - Break Duration
Weekly Hours = Sum of Daily Hours
Overtime Hours = max(0, Weekly Hours - 40)
Regular Pay = Regular Hours x Hourly Rate
Overtime Pay = Overtime Hours x Hourly Rate x 1.5
Total Pay = Regular Pay + Overtime Pay
Worked example
A worker logs: Mon 9am-5pm (30-min break), Tue 9am-6pm (45-min break), Wed 8am-5pm (60-min break), Thu 9am-7pm (60-min break), Fri 9am-4pm (30-min break). Daily hours: 7.5, 8.25, 8.0, 9.0, 6.5 = 39.25 total. At $20/hour, weekly pay = 39.25 x $20 = $785 (no overtime this week). If they worked an extra 5 hours Saturday, total = 44.25 hours; pay = (40 x $20) + (4.25 x $30) = $927.50.
For billing clients: a freelancer bills 32 hours in a week at $95/hour. Time card shows: Project A 18 hours, Project B 14 hours. Invoice: 18 x $95 = $1,710 (Project A), 14 x $95 = $1,330 (Project B). Total = $3,040. Time card attached as documentation.
Methodology and sources
This calculator uses standard time-tracking methodology consistent with FLSA requirements. Breaks under 20 minutes are considered paid work time (federal requirement); meal breaks of 30+ minutes where the employee is completely relieved of duties are unpaid. The calculator deducts break time from daily hours.
Time rounding: FLSA permits rounding to the nearest 5, 6, 10, or 15 minutes, as long as it averages out over time. This calculator uses minute-level precision for accuracy; some employers round for payroll simplicity.
Overtime calculation: Federal rule is 1.5x for hours over 40/week. State rules vary — California requires 1.5x over 8/day, 2.0x over 12/day. The calculator uses federal rules; adjust manually for state-specific daily overtime.
Sources: FLSA regulations (29 CFR Part 785); Department of Labor timekeeping guidance; state labor codes.
Industry benchmarks
Standard work hours and overtime patterns (BLS data):
- Standard workweek: 40 hours (5 days x 8 hours)
- Average US workweek: 34.6 hours (all workers, 2024)
- Average full-time workweek: 42.5 hours
- Overtime prevalence: ~25% of full-time workers work overtime regularly
- Average overtime for OT workers: 8-10 hours/week
- Industries with high overtime: Construction, healthcare, manufacturing, hospitality
- Industries with low overtime: Government, education, professional services
For freelancers, typical billable hours: 20-25/week out of 40-hour workweek (50-60% utilization).
Common mistakes to avoid
Mistake 1: Not tracking breaks. Unpaid meal breaks must be deducted from work time. Tracking them ensures accurate pay and FLSA compliance.
Mistake 2: Forgetting to log all hours worked. Email after hours, prep time, mandatory meetings — all count as work time. Not logging them understates hours and may violate FLSA.
Mistake 3: Rounding in employer's favor. FLSA allows rounding, but it must average out over time. Consistently rounding down is a violation.
Mistake 4: Not tracking time for freelancers. Without time records, you can't bill accurately, can't verify project profitability, and can't defend scope disputes. Track time for every project, every day.
Mistake 5: Working through lunch without recording. If you work through your meal break, that time must be paid. Don't silently work through lunch — record it and get paid for it.
When to use this calculator
Use this calculator weekly for payroll verification (employees) or client billing (freelancers). For employees, compare to your pay stub and address discrepancies with HR. For freelancers, attach to client invoices as documentation.
For wage disputes, maintain your own time records (this calculator's output, plus emails about hours worked). Employer time records can be altered; your own records are evidence in FLSA cases.
For project profitability analysis, track time by project and compare to project revenue. Effective hourly rate (revenue / hours) reveals which projects are profitable and which aren't.
Related metrics and alternatives
Time tracking software: Toggl, Harvest, Clockify for automated tracking with project codes and reporting.
Payroll calculator: Computes take-home pay after taxes and deductions.
Overtime calculator: Focused on overtime computation under FLSA and state rules.
Project billing calculator: Converts tracked time to client invoices with rates by project.
Shift scheduling calculator: Optimizes staff schedules to minimize overtime costs.
How to interpret the results
Weekly hours 40-45: Normal full-time with minimal overtime. Sustainable.
Weekly hours 45-50: Moderate overtime. Sustainable for short periods; verify compensation.
Weekly hours 50+: High overtime. Burnout risk. Common in construction, healthcare, finance.
Weekly hours < 35: Part-time or underemployed. Verify whether this is by choice or due to slow business.
Billable hours < 50% of work time: Low utilization for freelancers. Increase marketing or raise rates to compensate for unpaid time.
Billable hours > 80% of work time: High utilization but unsustainable long-term. Neglects business development and risks burnout.