Overtime Calculator
Enter your hourly rate and the hours you worked this week. The calculator splits off everything past 40 hours, pays it at time and a half, adds any double-time hours, and shows each line of the math.
Updated October 8, 2026Built and maintained by Muhammad YounusNothing you type leaves your browser
Hours in decimals: 7:30 is 7.5. Got clock times instead? Use the time card calculator.
How do you calculate overtime pay?
Overtime pay's your hourly rate times the overtime multiplier times the overtime hours. Under federal law, covered employees get at least one and a half times their regular rate for hours over 40 in a workweek. That rule's in 29 U.S.C. section 207(a), and it's a weekly test, so the calculator totals the week first.
Checking a week, step by step
Rate $18.00, 46 hours worked
Regular: 40 x $18.00 = $720.00
Overtime rate: $18.00 x 1.5 = $27.00
Overtime: 6 x $27.00 = $162.00
Gross: $720.00 + $162.00 = $882.00
Weekly pay by hours
Here's what a week pays at $20 an hour with time and a half past 40:
| Hours | Overtime hours | Gross pay |
|---|---|---|
| 40 | 0 | $800.00 |
| 42 | 2 | $860.00 |
| 45 | 5 | $950.00 |
| 48 | 8 | $1040.00 |
| 50 | 10 | $1100.00 |
| 55 | 15 | $1250.00 |
| 60 | 20 | $1400.00 |
Double time and state rules
Federal law doesn't require double time, but employers and union contracts sometimes pay it for holidays or long shifts, and some states have their own daily rules. If you're paid double for some hours, put them in the double-time box and they'll be kept out of the time-and-a-half count. The calculator doesn't guess your state's rules, so check your state labor department if they apply.
Common mistakes
Don't apply time and a half to every hour. It's only the hours past 40 that get the higher rate; the first 40 stay at your regular rate. If you multiply the whole week by 1.5, you'll overstate your pay by a lot.
Don't forget that a holiday or vacation day you didn't work usually isn't counted toward the 40 hours. It's hours actually worked that count under the federal rule, unless your employer's policy says otherwise.
And don't double count. If some hours are already paid at double time, they shouldn't also be counted again at time and a half. That's why the double-time box keeps them out of the overtime count.
Frequently asked questions
How do you calculate overtime pay?
Multiply your hourly rate by 1.5 to get the overtime rate, then multiply that by your overtime hours. At $18 an hour, 6 overtime hours pay 6 x $27 = $162.
When does overtime start?
Under federal law it starts after 40 hours in a workweek (29 U.S.C. section 207). Some states also have daily overtime rules, which this calculator doesn't assume.
What's double time?
Double time pays twice the regular rate. Federal law doesn't require it, but some employers, union contracts and state rules do. Put those hours in the double-time box.
Is overtime paid on salary?
Salaried workers can be owed overtime too unless they're exempt. Exemption depends on duties and pay, so check with your employer or the Department of Labor if you're not sure.
Does the calculator include taxes?
No. It shows gross pay before taxes and deductions.