Overtime Pay Calculator
Calculate gross overtime pay using an entered rate and multiplier for entered overtime pay.
How to use Overtime Pay Calculator
1. Choose Currency for all amounts, then enter Base Hourly Rate, Overtime Hours, Overtime Multiplier in the labelled units. 2. Only the entered overtime hours are included. This result includes the base component within the multiplier; do not add the base pay for those same hours again. No overtime multiplier or legal entitlement is assumed. The arithmetic excludes tax, deductions, thresholds, time off in lieu and payroll rounding. A zero multiplier models no overtime pay; hours needed requires a positive resulting rate. 3. Select Calculate or press Enter to see the result. 4. Select Select Copy result to copy the answer, or Reset to clear the form.
Why use this tool?
Use Overtime Pay Calculator to compare your entered entered overtime pay assumptions with a stated formula and a reproducible example.
How the calculation works
Overtime pay = base hourly rate × overtime hours × entered multiplier. Only the entered overtime hours are included. This result includes the base component within the multiplier; do not add the base pay for those same hours again. No overtime multiplier or legal entitlement is assumed. The arithmetic excludes tax, deductions, thresholds, time off in lieu and payroll rounding. A zero multiplier models no overtime pay; hours needed requires a positive resulting rate. Choose one currency for every monetary input. The selector labels and formats amounts; it does not apply an exchange rate. Money displays use the selected currency’s standard minor units, including whole yen for JPY. Exact decimal arithmetic precedes rounding; halfway minor units round away from zero. Numeric input/result magnitudes are bounded by 9,007,199,254,740,991. UK background on contractual overtime arrangements: https://www.gov.uk/overtime-your-rights. The calculator uses entered assumptions and does not determine legal entitlement.
Example
Overtime Shift example: Currency = GBP; Base Hourly Rate = 20; Overtime Hours = 4; Overtime Multiplier = 1.5. Result: £120.00.
Practical tip
Enter the multiplier specified for the pay arrangement being modelled. For example, 1.5 means 1.5 times the base rate.
Frequently asked questions
Is this just the overtime premium?
No. It is total pay for the entered overtime hours. A 1.5 multiplier includes normal pay and an additional half-rate premium.
Does changing the currency convert these amounts?
Choose one currency for every monetary input. The selector labels and formats amounts; it does not apply an exchange rate. Money displays use the selected currency’s standard minor units, including whole yen for JPY. Exact decimal arithmetic precedes rounding; halfway minor units round away from zero.
What assumptions should I keep with this result?
Only the entered overtime hours are included. This result includes the base component within the multiplier; do not add the base pay for those same hours again. No overtime multiplier or legal entitlement is assumed. The arithmetic excludes tax, deductions, thresholds, time off in lieu and payroll rounding. A zero multiplier models no overtime pay; hours needed requires a positive resulting rate.