Calculating Overtime Pay: Formula and Examples

Calculating overtime pay means multiplying the overtime hours worked by the applicable overtime rate, then adding that amount to regular earnings. Enter your regular hourly rate and overtime hours to estimate the overtime premium and total pay; this calculator uses the common time-and-a-half method, not jurisdiction-specific rules.

Formula

Overtime pay = regular hourly rate × overtime multiplier × overtime hours. This calculator assumes a multiplier of 1.5, commonly called time and a half.

• rate is the regular hourly rate, in dollars per hour ($/hour).
• hours is the number of overtime hours worked (hours).
• total is pay for the overtime hours at the assumed overtime rate, in dollars ($).
• premium is the extra amount above straight-time pay for those hours, in dollars ($).
• combined is straight-time pay for those hours plus overtime pay, in dollars ($).

The premium-only formula is rate × (1.5 − 1) × hours, or rate × 0.5 × hours. The combined figure is useful when comparing the pay for overtime hours with what those hours would have paid at the regular rate. It does not include earnings for the rest of the workweek, deductions, or other pay items.

Worked Example

Using the calculator’s defaults—$20 per hour and 5 overtime hours:

1. Overtime rate: $20 × 1.5 = $30 per hour.
2. Overtime pay: $30 × 5 = $150.00.
3. Premium only: $20 × 0.5 × 5 = $50.00.
4. Regular-rate pay for those same hours plus overtime pay: ($20 × 5) + $150 = $250.00.

The calculator’s first result is $150.00: the full pay for the five overtime hours under the assumed time-and-a-half method. The $50.00 premium is the extra amount above the $100.00 those hours would earn at the regular rate.

How Overtime Pay Works

Overtime rules usually begin by defining which hours count as overtime and the rate that applies. Under the common time-and-a-half approach, each qualifying overtime hour is paid at 1.5 times the regular rate. But the threshold, work period, eligible workers, and calculation of the regular rate depend on the applicable law and employment arrangement.

For example, a rule might count hours beyond a weekly threshold, while another arrangement or jurisdiction may apply daily thresholds or different premiums. Do not assume that hours above a scheduled shift automatically qualify, or that hours from separate workweeks can be combined. Check the rules that apply to your location, job, and pay period.

When to Use This Calculation

This simple formula is useful when you already know your regular hourly rate, the number of overtime hours, and the multiplier that applies. It can help with a quick estimate, a payslip check, or understanding the difference between full overtime-hour pay and the overtime premium.

If the applicable multiplier is not 1.5, calculate with the correct one instead: rate × multiplier × overtime hours. For instance, a multiplier of 2 means twice the regular rate. The calculator does not let you change the multiplier, so use it only when time and a half is the right assumption. If your pay is salaried, commission-based, or includes additional compensation, determining the legally defined regular rate may require a separate calculation.

Common Mistakes and Limits

• Counting the premium as all overtime pay: The premium is only the extra amount above regular pay. At time and a half, the full overtime rate is 1.5 times the regular rate, while the premium portion is 0.5 times it.
• Using the wrong rate: A listed base wage may not be the applicable regular rate when other compensation must be considered. Rules vary, so verify how the rate is defined for your circumstances.
• Mixing hours and minutes: Enter overtime as decimal hours. For example, 30 minutes is 0.5 hours, and 15 minutes is 0.25 hours—not 30 or 15 hours.
• Rounding too early: Keep unrounded hours and rate figures during the calculation, then round the final dollar amounts to cents. Payroll systems may apply specific rounding practices.
• Confusing gross pay with take-home pay: The results are gross amounts before deductions and do not estimate taxes or other withholding.

This calculator is a basic arithmetic estimate. It cannot determine worker classification, legal eligibility, which hours count, required premiums, or how bonuses and other earnings affect the regular rate. It also assumes every entered overtime hour has the same rate.

Frequently Asked Questions

How do I calculate overtime pay at time and a half?
Multiply the regular hourly rate by 1.5, then multiply that overtime rate by the qualifying overtime hours. At $20 per hour for 5 overtime hours, the result is $150 before deductions.

What is the difference between overtime pay and overtime premium?
Overtime pay here means the full amount for overtime hours at the overtime rate. The premium is only the extra above straight-time pay. At time and a half, that extra is half the regular rate for each overtime hour.

How do I calculate overtime if I earn a salary?
You may first need to convert salary to an hourly regular rate using the relevant pay period and hours, then determine which overtime rules apply. The method is not universal, and some salary arrangements require additional earnings to be included.

Does this calculator show take-home overtime pay?
No. It estimates gross overtime amounts from the rate and hours entered. Taxes, deductions, benefits, and other payroll adjustments are not included.

Can overtime be calculated weekly or daily?
The arithmetic works once qualifying overtime hours are known, but the rule that identifies those hours varies. Check whether the applicable policy or law uses a weekly threshold, a daily threshold, or another method.

Related

• Calculate Day and Time Between Two Dates
• Calculate Calendar Days Between Dates
• Calculate Days Between Dates: Formula and Examples

in rate | Regular hourly rate | $/hour | 20 | 0
in hours | Overtime hours | hours | 5 | 0
out total | Overtime pay | $ | rate * 1.5 * hours | 2
out premium | Overtime premium only | $ | rate * 0.5 * hours | 2
out combined | Regular pay for those hours plus overtime pay | $ | rate * hours + total | 2