Whether you are estimating on the spot or checking a result somebody else gave you, the overtime calculator is the quickest way to get from overtime pay multiplier, overtime hours, regular work time and regular pay to total overtime pay, total regular pay and overtime pay.
What Is the Overtime Calculator?
The overtime calculator takes overtime pay multiplier, overtime hours, regular work time and regular pay and turns them into total overtime pay, total regular pay and overtime pay.
It is the kind of calculation you would otherwise do on the back of an envelope: mechanical, repeatable and easy to get subtly wrong without noticing.
How the Overtime Figure Is Built
Each result is calculated from the ones before it, so the working is fully visible. That matters when the answer is going to be quoted to somebody else and you need to be able to explain where it came from.
The figures are exactly as good as the assumptions underneath them. Check the rates, the periods and the tax treatment before you rely on the result.
Reading the Result Sensibly
A small change in an input can move the result by much more than you would expect, particularly where the calculation divides by one of the figures you supplied. That is worth understanding before you rely on a figure.
For anything that will be committed to, write the inputs down beside the result. A number you can reproduce is worth far more than one you cannot explain.
A Worked Example
Working through an example, with overtime pay multiplier set to 10, overtime hours set to 5, regular work time set to 2, the calculator returns overtime pay of 1,000, and total overtime pay of 5,000, and total regular pay of 200. Substitute your own figures and the same steps produce the same kind of answer.
Frequently Asked Questions
What do I need to work out total overtime pay?
Enter overtime pay multiplier, overtime hours, regular work time and regular pay. The calculator then works through the relationship and reports total overtime pay, total regular pay and overtime pay.
What does the overtime actually calculate?
It takes overtime pay multiplier, overtime hours, regular work time and regular pay and converts them into total overtime pay, total regular pay and overtime pay using the standard relationship for this problem. Each step is applied in turn, so every output is traceable back to the numbers you typed in.
How should I enter overtime pay multiplier?
Use the value you actually have, in the unit shown next to the field. Enter every value in the same unit system. The calculator assumes the figures you supply are consistent, so it cannot correct a mistake that happens before the calculation starts.
Why does a small change in one value move the answer so much?
That happens when an output depends on a ratio, because dividing by a small number magnifies any change in it. Check the units first, then check whether the value you entered is in the range the relationship was designed for.
Can I use this for a quick estimate as well as a precise answer?
Yes. The calculator is built for quick checks, so round your inputs to a sensible number of significant figures and the result will be just as useful. If you need more precision, keep the same method and add digits to the inputs rather than adjusting the method itself.