This time card calculator converts hours worked into estimated gross pay with overtime. Enter total hours, your hourly rate, when overtime starts, and the OT multiplier. The result shows how regular hours and overtime hours add up for the week.
Use it when you already know decimal hours from a time clock export, handwritten time card, or shift log. It does not replace payroll software or legal advice for your state rules.
Who this time card tool helps
Hourly employees check a paycheck estimate before payday. Small business owners spot check a weekly total. Freelancers who bill hourly can separate straight time from overtime style premiums when a client pays them.
If you work overnight or split shifts, add all hours in the same workweek first, then enter the total here. The calculator uses one weekly hours figure, not clock in and clock out rows.
How to use the calculator
- Enter hours worked for the pay period you care about, usually one workweek.
- Enter the hourly rate used for regular hours.
- Set overtime after hours. Many U.S. weekly plans use 40.
- Set the OT multiplier. Time and a half is commonly 1.5.
- Read the estimated pay. Compare it with your payroll summary.
How the pay math works
Regular hours equal the smaller of total hours and the overtime threshold. Overtime hours equal any hours above that threshold. Regular pay is regular hours times rate. Overtime pay is overtime hours times rate times the multiplier.
Example: 42 hours at $20, overtime after 40, multiplier 1.5. Regular pay is 40 × 20 = $800. Overtime is 2 × 20 × 1.5 = $60. Total pay is $860.
| Input | Value |
|---|---|
| Hours | 42 |
| Hourly rate | $20 |
| Overtime after | 40 |
| OT multiplier | 1.5 |
| Estimated pay | $860 |
Decimal hours and break time
Time cards often store minutes as decimals. Forty five minutes is 0.75 hours. One hour fifteen minutes is 1.25 hours. Convert minutes before you enter the field if your sheet lists clock times only.
Unpaid meal breaks should already be removed from the hours total. If breaks were paid, leave them in. Match whatever rule your employer uses so the estimate lines up with payroll.
Overtime rules this tool does not decide
Federal weekly overtime is a common baseline, but some states add daily overtime, seventh day rules, or different multipliers. This calculator lets you change the threshold and multiplier so you can model a policy. It does not tell you which law applies.
Blended rates for multiple pay rates in one week need a weighted average first. Enter that blended rate if that is how your payroll calculates overtime.
Biweekly and multiperiod notes
For a biweekly check, run each workweek separately and add the two pay results. Do not feed 80 hours into one week field with a 40 hour threshold unless that matches how your employer defines the workweek.
Common mistakes
- Entering clock times instead of decimal hours
- Leaving unpaid lunch inside the hours total
- Using 1.5 as a flat add on instead of a multiplier on the hourly rate
- Mixing two different hourly rates without blending first
Limitations
Results are gross pay estimates before tax, benefits, tips pooling, shift differentials, or double time tiers. Confirm final pay with your payroll provider.
Shift differentials
Night or weekend premiums change the effective rate. If payroll blends those into overtime math, enter the blended rate your handbook describes.
Rounding rules
Some employers round punches to the nearest five or fifteen minutes. Match that rounding before you enter decimal hours or the estimate will drift from the paycheck.
Salaried versus hourly
This tool is for hourly style totals. Salaried exempt roles may not use overtime the same way. Confirm classification with your employer.
Practical planning tips
Write down the inputs you used so you can repeat the estimate later. Small changes in rate, depth, hours, or price can move the result more than people expect.
When you compare two options, change one variable at a time. That keeps the comparison honest and easy to explain to a partner, client, or lender.
Units and rounding
Keep units consistent across every field. Mixing inches with feet, litres with gallons, or monthly figures with annual figures is the most common source of wrong answers.
Round only at the end for ordering or payments. Early rounding in each step can stack into a surprising gap versus the live calculator.
What this estimate does not include
Taxes, delivery fees, labor, penalties, and one time service charges are often outside the core formula. Add those on paper when you build a real budget.
Local rules, code requirements, and lender overlays can still change the final decision even when the math is correct.
How to double check the result
Recalculate once with a pencil using the same formula shown on this page. If your manual result is close to the tool, your inputs are probably consistent.
If the two answers diverge, check the field labels again before you trust either number for spending or filing.
When to get a second opinion
Large purchases, structural work, medical or legal questions, and loan contracts deserve a qualified human review. Use this page to prepare better questions, not to replace that review.
Save a screenshot or note of the inputs and result date. That record helps when you talk with a contractor, accountant, or lender later.
For related unit and percent checks while you plan materials, try the unit converter or the percentage calculator.