Calculators

Calculators that do the sum in your browser

Two free calculators for checks most apps skip: overtime with a shift differential in the US, and 12.07% holiday pay in the UK.

ShiftWallet The iPhone app that works out what every shift should pay.

Nothing you type leaves the page. Each calculator shows its working under the result, so you can follow the sum by hand, and the guides explain where the rules come from.

Calculator for US paychecksOvertime and shift differential calculatorWork out your FLSA regular rate with night or weekend differentials, the overtime you should get, and the gap if payroll used 1.5 × base. Runs in your browser.Open the calculator
Calculator for UK payslips12.07% holiday pay calculator for irregular hoursSee the holiday you've built up at 12.07% on zero-hours or irregular hours in Great Britain, and what a rolled-up holiday line on your payslip should be.Open the calculator

Want this worked out for every shift?

That is what I built ShiftWallet for. You log the shift, set your rates once, and the app shows what it should have paid, line by line, so you can hold it up against your payslip.

Free to start. Pro is optional.
iPhone and iPad, iOS 17 or later

ShiftWallet's weekly report on an iPhone: $911.25 from 5 shifts and 47.5 hours this week. Two cards from the app: $1,458.00 from 8 shifts this pay period, and one night shift from 9:00 PM to 7:00 AM that paid $182.25.