Weekly overtime estimate
regular pay + (overtime hours × regular rate × multiplier)
The default threshold is 40 hours and the default multiplier is 1.5×.
Source: Overtime Pay; Fact Sheet #56A: Overview of the Regular Rate of Pay Under the FLSA
The arithmetic is exact. The rules — thresholds, multipliers, which hours count — come from the official publishers listed below, and each calculator lets you change the ones that vary.
Last reviewed September 21, 2026
| Rule | Value |
|---|---|
| Federal weekly overtime threshold | 40 hours in a fixed workweek |
| Time and a half | 1.5× the regular rate |
| Double time | 2× the regular rate |
| Weeks per year (salary conversion) | 52 |
| California daily overtime | after 8 hours in a workday, at 1.5× |
| California daily double time | after 12 hours in a workday |
| California seventh consecutive day | first 8 hours at 1.5×, then 2× |
regular pay + (overtime hours × regular rate × multiplier)
The default threshold is 40 hours and the default multiplier is 1.5×.
Source: Overtime Pay; Fact Sheet #56A: Overview of the Regular Rate of Pay Under the FLSA
hourly rate × 1.5
The calculator also multiplies that rate by the entered premium hours.
Source: Overtime Pay
hourly rate × 2
Double time is not the general federal overtime rule; it may come from state law or an employer agreement.
Source: Overtime FAQ
regular hours × rate + 1.5× hours × rate + 2× hours × rate
Daily and weekly premium buckets are reconciled so one hour is not counted twice. The seventh-day rule is applied when all seven days of the workweek were worked.
Source: Overtime FAQ
weekly salary + straight time up to 40 hours + half-time for covered hours over 40 + 1.5× for hours beyond both
Regular rate = annual salary ÷ 52 ÷ the hours the salary is intended to cover. Applies only to salaried workers who are owed overtime.
Source: 29 CFR 778.113 and 778.325: salaried employees; Overtime Pay
All sources are primary: the agency or regulation states the rule itself. Each was read on September 21, 2026; they are rechecked at least quarterly.
US Department of Labor, Wage and Hour Division · United States — federal · Primary · reviewed September 21, 2026
Used by: Overtime calculator, Time and a half calculator, Holiday pay calculator, Shift differential calculator, Double time calculator, Salary overtime calculator
US Department of Labor, Wage and Hour Division · United States — federal · Primary · reviewed September 21, 2026
Used by: Overtime calculator, Shift differential calculator, Salary overtime calculator
US Code of Federal Regulations (Electronic CFR) · United States — federal · Primary · reviewed September 21, 2026
Used by: Salary overtime calculator
Internal Revenue Service · United States — federal income tax · Primary · reviewed September 21, 2026
California Department of Industrial Relations · California · Primary · reviewed September 21, 2026
Used by: California overtime calculator, Double time calculator