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Free Tool — Timesheet & Overtime

Work Hours & Timesheet Calculator

Enter each day's clock-in, clock-out, and unpaid break, and this time card calculator adds up your week — daily hours, regular vs. overtime at 1.5×, and gross pay. Handles overnight shifts and updates as you type. No signup.

Day Clock in Clock out Break (min) Hours

Weekly summary

Total hours worked 0.00
Regular hours 0.00
Overtime hours (1.5×) 0.00
Gross pay
Enter an hourly rate to see pay
Regular pay
Overtime pay
Track Real Hours — Free 30-Day Trial

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The formula behind the numbers

Every day is calculated the same way: measure the gap between clock-in and clock-out, remove the unpaid break, and convert minutes to decimal hours. If a shift's clock-out is earlier than its clock-in, the tool assumes it ran past midnight and adds 24 hours so overnight shifts come out right instead of negative.

daily_hours = ((clock_out − clock_in) in minutes − break_minutes) / 60
    (if clock_out < clock_in, add 24h; clamp negatives to 0)

weekly_total = sum of all daily_hours
regular = min(weekly_total, threshold)
overtime = max(0, weekly_total − threshold)
gross_pay = regular × rate + overtime × rate × 1.5

Threshold (default 40). Under the federal Fair Labor Standards Act, non-exempt workers earn 1.5× their regular rate beyond 40 hours in a workweek. Some states (like California) add daily overtime rules; change the threshold to match your state or contract. Unpaid break is the lunch or meal time you don't get paid for — a paid 15-minute coffee break should stay at 0. Hourly rate is optional; leave it blank if you only need hours.

Worked example

A tech works Monday through Friday, 8:00 AM to 5:00 PM (8:00–17:00), taking a 30-minute unpaid lunch each day, at $30/hour.

DayInOutBreakHours
Mon–Fri (each)8:0017:0030 min8.50
Weekly total42.50

540 min − 30 min break = 510 min = 8.50 h/day; × 5 days = 42.50 h
Regular = min(42.5, 40) = 40 h  •  Overtime = 42.5 − 40 = 2.5 h
Regular pay = 40 × $30 = $1,200.00
Overtime pay = 2.5 × $30 × 1.5 = 2.5 × $45 = $112.50
Gross pay = $1,200.00 + $112.50 = $1,312.50

Click Load example in the calculator above to run these exact numbers yourself.

Why capture real clock-in/out beats reconstructing from memory

When a tech fills in a time card on Friday afternoon, they round. "About 8, knocked off around 5" quietly becomes a clean number that hides the 20 minutes of setup before the first job and the drive-back after the last one. Those rounded minutes run in both directions: sometimes you overpay, and sometimes the crew is shorted and stops trusting the sheet. Either way, payroll is built on a guess.

Capturing the actual clock-in and clock-out at the moment they happen fixes that. You get the real gap between start and finish, real break lengths, and a defensible record if a paycheck is ever questioned — which matters, because the FLSA puts the burden of keeping accurate time records on the employer. This calculator is the manual version; if you'd rather have the times captured automatically from the field, that's where an app helps.

Need a paper version to hand out first? Grab the free technician timesheet template, then use this calculator to total it. When manual entry gets old, RevoField's mobile app records real start and stop times in the field, even offline.

Timesheet calculator questions

How do I calculate work hours from clock-in and clock-out times?
Subtract clock-in from clock-out to get the elapsed minutes, subtract any unpaid break minutes, then divide by 60 for decimal hours. For example, 8:00 to 17:00 is 540 minutes; minus a 30-minute lunch that's 510 minutes, or 8.5 hours. The calculator above does this for all seven days and totals the week.
How is overtime calculated?
Under the U.S. Fair Labor Standards Act, non-exempt employees earn 1.5× their regular rate for hours beyond 40 in a workweek. This tool counts the first 40 hours (or whatever threshold you set) as regular and everything above it as overtime at 1.5×. Adjust the threshold if your state or contract uses a different rule.
Does it handle overnight shifts?
Yes. If clock-out is earlier than clock-in, the tool assumes the shift crossed midnight and adds 24 hours before subtracting. A 22:00 to 06:00 shift correctly counts as 8 hours, not a negative.
Is this time card calculator free?
Yes — it runs entirely in your browser, needs no signup, and stores nothing. If you'd rather capture your crew's real times automatically instead of typing them, RevoField offers a free 30-day trial with no credit card. See more free calculators and tools.

Stop retyping time cards

This calculator totals the week, but someone still has to type in every start and stop. RevoField captures real clock-in and clock-out times from the field — even offline — so payroll math is done before you sit down.

Start Free Trial — No Card Required View Pricing

Starter $49/mo • 30-day free trial • Works offline

Let the App Do the Timesheet Math

Real clock-in/out from the field, hours totaled automatically, overtime flagged before payroll. Start free and see your next week add itself up.

Free 30-day trial • No credit card required • Cancel anytime