Overtime Calculator
How much do you really earn with overtime? Calculate weekly pay, see the breakdown, and project your monthly and annual income.
Try another scenario
Calculate for your country ▼
How to Use This Calculator
Tab "Weekly Earnings"
Enter your hourly rate, regular hours per week, overtime hours, and choose an OT multiplier (1.5x or 2.0x). The result shows your regular pay, overtime pay, total weekly earnings, and effective hourly rate.
Tab "Overtime Breakdown"
See a visual breakdown of how your pay splits between regular and overtime. The bar chart shows the proportion of each, along with your OT hourly rate and what share of your total pay comes from overtime hours.
Tab "Monthly Projection"
Extends your weekly pay to monthly (times 4.33 weeks) and annual (times 52 weeks) projections. Compare projected earnings with and without overtime to see the annual impact of those extra hours.
The Formulas
Regular Pay = Hourly Rate × Regular Hours
Overtime pay:
OT Pay = Hourly Rate × OT Multiplier × OT Hours
Total weekly pay:
Total = Regular Pay + OT Pay
Effective hourly rate:
Effective Rate = Total Weekly Pay ÷ (Regular Hours + OT Hours)
Monthly projection:
Monthly = Weekly Total × 4.33
Annual projection:
Annual = Weekly Total × 52
All calculations use standard payroll mathematics. No country-specific labour laws or tax rates are applied. Results are gross (pre-tax) estimates.
Worked Examples
Example 1 — Standard overtime: $25/hr, 40 + 10 OT at 1.5x
A worker earns $25 per hour, works 40 regular hours plus 10 overtime hours at time-and-a-half.
Calculation: Regular = $25 × 40 = $1,000. Overtime = $25 × 1.5 × 10 = $375. Total = $1,000 + $375 = $1,375 per week.
Example 2 — Effective hourly rate: $27.50/hr
Using the same worker from Example 1, the effective hourly rate blends regular and overtime hours.
Calculation: $1,375 ÷ 50 hours = $27.50 per hour. The effective rate is 10% higher than the base $25/hr rate because 20% of the hours are paid at a 50% premium.
Example 3 — Annual projection: $71,500 with OT vs $52,000 without
The same $25/hr worker projects annual income with and without weekly overtime.
Working 10 overtime hours per week at 1.5x adds $19,500 to annual income — a 37.5% increase from working 25% more hours. The OT premium amplifies the return on each extra hour.