Overtime Math•October 6, 2026•4 min read

How to Calculate Overtime Pay: Time and a Half Rates & Formulas

Learn how to calculate overtime pay using the standard time and a half multiplier. See worked examples for hourly wages, gross earnings, and blended rates.

Published by TimeCardWorks•Client-Side Mathematical Reference

Interactive Overtime Calculator

Dedicated Tool
hrs
hrs/wk
/hr
Currency:
Regular Hours (40.00h)Overtime Hours (8.00h)
Regular Earnings
$1,000.00
40.00 hrs @ $25.00/hr
Overtime Earnings
$300.00
8.00 hrs @ $37.50/hr (1.5×)
Total Estimated Gross
$1,300.00
48.00 total paid hours
Estimated Gross Earnings: 40 hours and 1.5× are common defaults for U.S. federal overtime examples, but applicable rules may differ. State laws, industry rules, collective agreements, exemptions, and individual employment arrangements may differ. This calculator estimates gross wages before tax withholding and deductions.

1. What Is Time and a Half?

The 1.5× Multiplier Explained

"Time and a half" refers to paying an employee their standard base hourly wage ("time") plus an additional 50% ("half") for eligible hours worked. Mathematically, this equals 1.5 times the regular hourly rate.

Overtime Hourly Rate = Base Hourly Rate × 1.5

Example: If an employee earns $24.00 per hour, their overtime rate is $24.00 × 1.5 = $36.00 per hour.

2. The Complete Gross Pay Formula

Combining Base Earnings and Overtime Premiums

Total estimated gross earnings for an overtime-eligible week are computed by adding regular earnings to overtime earnings:

Gross Pay = (Regular Hours × Base Rate) + (Overtime Hours × Base Rate × Multiplier)

Worked Example: An employee works 46 hours in a week at an hourly rate of $20.00/hr with a 40-hour threshold at 1.5×.

• Regular Earnings: 40 hours × $20.00 = $800.00

• Overtime Hours: 46 - 40 = 6 hours

• Overtime Rate: $20.00 × 1.5 = $30.00/hr

• Overtime Earnings: 6 hours × $30.00 = $180.00

• Total Estimated Gross Pay: $800.00 + $180.00 = $980.00

3. Reference Table: Hourly Rates and Overtime Pay

Standard Wage Rates at 1.5× and 2.0× Multipliers

Consult this reference chart to find common overtime pay rates based on standard hourly wages:

Base WageTime & a Half (1.5×)Double Time (2.0×)Gross Pay for 45h (40 Reg + 5 OT)
$15.00/hr$22.50/hr$30.00/hr$712.50
$20.00/hr$30.00/hr$40.00/hr$950.00
$25.00/hr$37.50/hr$50.00/hr$1,187.50
$30.00/hr$45.00/hr$60.00/hr$1,425.00
$35.00/hr$52.50/hr$70.00/hr$1,662.50
$40.00/hr$60.00/hr$80.00/hr$1,900.00

4. Critical Boundary: Gross Pay vs Net Pay

Why Your Paycheck Differs from Calculator Results

Calculators on TimeCardWorks determine gross earnings—the total compensation earned before any deductions.

Your actual net paycheck will be lower due to mandatory payroll taxes (federal, state, and local income taxes), FICA (Social Security and Medicare), and voluntary deductions such as health insurance or retirement contributions.

Related Topics & Principles
Overtime PayTime and a HalfGross PayHourly Rate