Overtime Calculator
Model weekly straight-time pay, the regular rate, and an additional overtime premium.
Content updated August 3, 2026
This is a gross-pay scenario, not a payroll or legal determination. It excludes taxes, deductions, exemptions, alternative work periods, and state or industry rules. Confirm which payments belong in the regular rate before relying on the estimate.
Estimate one workweek of hourly gross pay with a configurable overtime threshold and multiplier. The calculator separates straight-time wages for every hour from the additional overtime premium, making the arithmetic visible instead of simply multiplying overtime hours by a different rate.
The default 40-hour threshold and 1.5 multiplier model the general U.S. federal rule for covered, nonexempt employees. Coverage, exemptions, included compensation, alternative work periods, and more protective state or industry rules can change an actual payroll result, so both rule inputs remain editable.
The Overtime formula
Regular rate = (hourly rate × all hours + included pay) ÷ all hours; added overtime premium = regular rate × (multiplier − 1) × hours over thresholdStraight-time wages are modeled for all worked hours. Gross pay equals straight-time wages plus included pay plus the additional overtime premium.
Worked example
At $20 per hour for 45 hours, with a 40-hour threshold, 1.5 multiplier, and no additional included pay, straight-time wages are $900 and the regular rate is $20. The added premium is $20 × 0.5 × 5 = $50, for modeled gross pay of $950.
Assumptions, rounding, and limitations
Assumptions
- All inputs describe one workweek and use the selected currency.
- Straight-time wages are already due for every entered hour, including hours above the threshold.
- The additional-pay input contains only compensation the user has determined belongs in the regular rate for this workweek.
- The selected threshold and multiplier describe the scenario being modeled; defaults are not a finding that any worker is covered or nonexempt.
- The 52-week figure repeats the identical modeled week without change.
Rounding: The engine retains floating-point precision through the calculation. Currency displays use up to two decimal places, while hour and multiplier displays use up to two decimal places.
Limitations
- Supports 0–168 weekly hours, positive thresholds through 168 hours, multipliers from 1 through 10, and money inputs through 1 trillion.
- Does not determine employee or employer coverage, exemption status, hours worked, payment classification, blended rates, piece rates, tip credits, comp time, alternative work periods, collective agreements, or federal, state, local, and industry exceptions.
- Does not calculate taxes, deductions, benefits, penalties, back pay, payroll timing, or take-home pay and is not individualized legal, payroll, tax, or employment advice.
Sources
- Fact Sheet #23: Overtime Pay Requirements of the FLSA — U.S. Department of Labor
- Fact Sheet #56C: Bonuses under the FLSA — U.S. Department of Labor
- Fact Sheet #22: Hours Worked under the FLSA — U.S. Department of Labor
Regular rate and overtime premium
Under the general Fair Labor Standards Act method, overtime is based on the regular rate, which can include more than an employee's stated hourly rate. This tool adds the entered included compensation to straight-time wages and divides by all hours worked to calculate that regular rate.
Because straight-time wages are modeled for every hour, including overtime hours, the added premium is only the part above straight time: regular rate multiplied by multiplier minus one, then multiplied by hours beyond the selected threshold.
What to put in additional pay
An allocated nondiscretionary bonus is one common example of compensation that may affect the regular rate. Whether a payment is included or excluded depends on the facts and applicable law; the calculator does not classify bonuses, commissions, shift differentials, reimbursements, gifts, benefits, or other payments for you.
The 52-week figure simply repeats the entered week 52 times. It is not a salary forecast and does not account for time off, changing hours, taxes, deductions, or future rate changes.
Frequently asked questions
▶How is time-and-one-half calculated here?
Straight-time wages are first assigned to every worked hour. At a 1.5 multiplier, each overtime hour then receives an additional 0.5 times the calculated regular rate.
▶Why can the regular rate differ from my hourly rate?
The regular rate can include certain additional compensation. This model adds the amount you identify as included pay to straight-time wages and divides that total by all hours worked.
▶Does overtime always start after 40 hours?
No. Forty hours is the general federal weekly threshold for covered, nonexempt employees, but exemptions and other federal, state, local, industry, contract, or alternative-work-period rules can differ.
▶Does the result estimate take-home pay?
No. It is a gross-pay scenario before taxes, benefits, garnishments, payroll deductions, and other adjustments.
▶What does the 52-week scenario mean?
It multiplies this single modeled week's gross pay by 52. It assumes the same inputs every week and should not be treated as a forecast.
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Open calculator →Disclaimer: Overtime Calculator results are estimates for general information and education only, and are not financial, tax, legal or medical advice. Verify important decisions with a qualified professional.