Overtime Hours Calculator
The federal Fair Labor Standards Act requires covered non-exempt employees to be paid at least one and one-half times their regular rate for hours worked over 40 in a workweek. This calculator splits your total weekly hours into regular and overtime around a threshold you can change, then values each at your hourly rate with an overtime multiplier you can also adjust to match stricter state or contract rules. It returns regular pay, overtime pay, and total gross pay before tax. Because state rules and the precise regular rate vary, the threshold, multiplier, and rate are all your inputs.
Overtime formula
overtime hours = max(0, total hours - threshold)
regular hours = total hours - overtime hours
regular pay = regular hours * rate
overtime pay = overtime hours * rate * multiplier
total gross = regular pay + overtime pay
Hours above the threshold are paid at the rate times the multiplier; the remainder is regular pay. The federal minimum threshold is 40 hours per week and the federal minimum multiplier is 1.5 (time and a half).
Overtime notes
- Federal overtime applies after 40 hours in a workweek, not per day.
- Some states add daily overtime or double-time rules; adjust the inputs to match.
- The FLSA regular rate includes most bonuses and commissions, not just base pay.
- Exempt executive, administrative, and professional staff are not owed FLSA overtime.
- This is a pre-tax estimate; actual pay reflects deductions and withholdings.
Overtime hours: frequently asked questions
What is the federal overtime rule?
Under the Fair Labor Standards Act, covered non-exempt employees must receive overtime pay of at least one and one-half times their regular rate for hours worked over 40 in a single workweek. The federal rule applies to the workweek, not to a single day, and there is no daily overtime requirement under federal law.
How are overtime hours calculated here?
Any hours above the weekly threshold you set, by default 40, are overtime; the rest are regular. The calculator multiplies regular hours by your hourly rate and overtime hours by the rate times the overtime multiplier, then adds the two to give total gross pay.
Why can I change the threshold and multiplier?
Some states set stricter rules than federal law, such as daily overtime after 8 hours or double time after 12 hours in a day in California. By letting you adjust the threshold and the multiplier, the calculator can match your own state or contract rules rather than assuming only the federal minimum.
What is the regular rate of pay?
The regular rate under the FLSA is total pay for the workweek divided by total hours worked, and it must include most bonuses and commissions, not just the base hourly wage. This simple calculator uses the base hourly rate you enter; for a precise regular rate including bonuses, consult the Department of Labor guidance.
Who is exempt from overtime?
Certain executive, administrative, professional, outside sales, and some computer employees who meet salary and duties tests are exempt from FLSA overtime. The rules are detailed and change over time, so check the current Department of Labor criteria before assuming an employee is exempt.
Official sources
- U.S. Department of Labor: Overtime Pay.
- Electronic Code of Federal Regulations: 29 CFR Part 778, Overtime Compensation.
Reviewed by the CalculatorHub team, edited by James Graham, 17 June 2026. See our methodology.