Overtime Calculator Hours: How to Figure Pay

This overtime calculator works out your total pay for a work week by taking your regular hourly rate, your standard hours, and the overtime hours you worked, then applying the standard time-and-a-half rate (1.5×) to the extra hours. You enter your regular pay rate, your normal weekly hours, and your total overtime hours, and it returns your regular pay, overtime pay, and total gross pay. The result is the gross amount before taxes and deductions, so it gives you a clear baseline for what you should see on your paycheck.

Formula

The formula behind the calculator is the standard overtime pay rule used in most U.S. workplaces under the Fair Labor Standards Act (FLSA). The overtime rate is 1.5 times the regular hourly rate, often called “time and a half.� The formulas are:

• Overtime pay = hourly rate × overtime hours × 1.5
• Regular pay = hourly rate × regular hours
• Total gross pay = regular pay + overtime pay

Where:

• Hourly rate = your base pay per hour (in dollars)
• Regular hours = the number of hours you worked at your normal rate (typically 40 per week)
• Overtime hours = the number of hours worked beyond the regular threshold (typically over 40 in a week)
• 1.5 = the multiplier for time-and-a-half pay

Worked Example

Using the default values from the calculator above (hourly rate = $20, regular hours = 40, overtime hours = 5):

1. Overtime pay = $20 × 5 × 1.5 = $20 × 7.5 = $150.00
2. Regular pay = $20 × 40 = $800.00
3. Total gross pay = $800.00 + $150.00 = $950.00

So with a $20/hour rate, 40 regular hours, and 5 overtime hours, your gross pay for the week is $950.00 before taxes.

When Overtime Applies

Overtime rules are not universal. In the United States, the FLSA requires overtime pay of at least 1.5 times the regular rate for hours worked over 40 in a workweek. However, there are many exceptions:

• Exempt employees – salaried workers in executive, administrative, or professional roles may not qualify for overtime, depending on their salary level and duties.
• State laws – some states have daily overtime rules (e.g., after 8 hours in a day) that are more generous than federal law.
• Other countries – the EU, UK, and many other regions have different thresholds (often 48 hours per week) and different multipliers (often 1.25 or 1.5).
• Union contracts – collective bargaining agreements may set higher rates, such as double time for Sundays or holidays.

This calculator assumes the most common U.S. scenario: 40-hour threshold, time-and-a-half. If your situation differs, you can adjust the regular hours field to match your actual threshold (e.g., 35 hours for some part-time contracts) and change the multiplier if your rate is different.

How to Use the Calculator Correctly

To get an accurate estimate, you need to know three numbers:

• Your hourly rate – this is your base pay, not your take-home pay. It should be the gross rate before taxes.
• Your regular hours – the number of hours you are paid at your normal rate. For most full-time workers, this is 40. If you work a compressed schedule (e.g., 4×10-hour days), your regular hours might be 40 but you might have daily overtime rules.
• Your overtime hours – the total hours worked beyond the regular threshold. For example, if you worked 47 hours in a week, your overtime hours are 7.

Enter these into the calculator, and it will show your overtime pay, regular pay, and total gross pay. Remember that this is gross pay – your actual paycheck will be lower after federal and state taxes, Social Security, Medicare, and any other deductions like health insurance or retirement contributions.

Common Mistakes and Misconceptions

There are several pitfalls people run into when calculating overtime:

• Using net pay instead of gross pay – the overtime rate is based on your gross hourly rate, not what you take home after taxes.
• Forgetting that overtime is per workweek – overtime is calculated on a weekly basis, not per pay period. If you are paid biweekly, you have two separate 40-hour thresholds, not one 80-hour threshold.
• Ignoring non-discretionary bonuses – in the U.S., certain bonuses (like production bonuses) must be included in the regular rate when calculating overtime, which can raise your effective hourly rate.
• Assuming daily overtime everywhere – federal law only requires weekly overtime after 40 hours. Daily overtime (e.g., after 8 hours) is a state-specific rule, not universal.
• Rounding hours incorrectly – some employers round time to the nearest 15 minutes. Make sure you use your actual worked hours, not rounded ones, for an accurate calculation.

Limitations of This Calculator

This calculator handles the simple case of a single hourly rate and a single overtime multiplier. Real-world pay can be more complex:

• Multiple pay rates – if you work different jobs at different rates (e.g., a nurse who works at two hospitals), you need to calculate each separately.
• Shift differentials – extra pay for night shifts or weekends may change your overtime rate.
• Double time – some states or contracts require 2× pay for certain hours (e.g., over 12 hours in a day). This calculator does not handle that; you would need to split the calculation.
• Salaried employees – if you are salaried, your hourly rate is not directly stated. You can estimate it by dividing your weekly salary by your regular hours, but the exact calculation depends on your exemption status.
• Taxes and deductions – this calculator gives gross pay only. It cannot predict your net pay because tax rates vary by income, state, and filing status.

For these situations, you may need a more specialized payroll calculator or advice from your HR department.

Frequently Asked Questions

Is overtime always 1.5 times my hourly rate?

Under U.S. federal law, overtime must be at least 1.5 times your regular rate for hours over 40 in a workweek. Many employers pay exactly 1.5×, but some pay more (e.g., double time) for specific circumstances like holidays. Some states have different rules, and union contracts can set higher rates. Always check your employer’s policy or your state labor department.

What if I work 50 hours in a week but my regular hours are 35?

If your regular workweek is 35 hours (e.g., part-time), overtime usually starts after 40 hours under federal law, not after 35. So you would have 10 overtime hours (50 – 40) and 40 regular hours, not 15 overtime hours. However, some state laws or company policies may define overtime differently – check your specific situation.

How do I calculate overtime if I’m paid a salary?

If you are a non-exempt salaried employee, your regular hourly rate is calculated by dividing your weekly salary by the number of hours your salary is intended to cover (typically 40). For example, a $800/week salary for 40 hours gives a $20/hour rate. Overtime is then 1.5× that rate for hours over 40. If you are exempt, you do not receive overtime at all.

Does overtime apply to weekends or holidays?

Not automatically. Under federal law, overtime is only based on hours worked over 40 in a week, not on the day of the week. Working on a Saturday only triggers overtime if you have already worked 40 hours that week. Some employers voluntarily pay extra for weekends or holidays, but it is not required by federal law.

Can my employer require me to work overtime?

In most U.S. states, yes, employers can require overtime work as long as they pay the required overtime rate. There are some exceptions for certain professions (like airline pilots) and some states have restrictions on mandatory overtime for nurses. If you have concerns, check your employment contract and state labor laws.

What is the difference between overtime and double time?

Overtime is typically 1.5× your regular rate, while double time is 2× your regular rate. Double time is not required by federal law but may be required by state law (e.g., California for hours over 12 in a day) or by union contracts. This calculator uses 1.5×, but you can manually adjust the multiplier if your situation calls for 2×.

Related

• Exact Hours Calculator: Find Precise Work Hours
• Employee Calculator Hours: How to Track Work Time
• Duty Hours Calculator: Track Work & Overtime

in rate | Hourly rate | $ | 20 | 0
in reg_hours | Regular hours | h | 40 | 0
in ot_hours | Overtime hours | h | 5 | 0
out ot_pay | Overtime pay | $ | rate * ot_hours * 1.5 | 2
out reg_pay | Regular pay | $ | rate * reg_hours | 2
out total | Total gross pay | $ | reg_pay + ot_pay | 2