Free · UK · No sign-up
Free calculators for tradespeople
Quick sums for pricing work: VAT on and off, your day rate, a job's price, and the difference between markup and margin. They work out the numbers as you type, with the working shown, and nothing you type is sent to us.
Calculators
- VAT calculatorAdd VAT to a price or take it off, at 20%, 5% or 0%, and see the net price, the VAT and the total.
- Day rate calculatorWork out the day rate and hourly rate that give you the take-home pay you want, after your costs.
- Job price calculatorPrice a job from materials, labour hours and your rate, with markup and VAT, line by line.
- Markup vs margin calculatorTurn a markup into a margin and back, and see the selling price and profit from your cost.
Got the price? Free quote, invoice, receipt and job sheet templates for your trade
Do this in 30 seconds on your phone
Do the sums once, then quote from your phone
- 1Put your rates and usual materials in your price list in ViperJob.
- 2Hold the mic and say the job. ViperJob prices the lines from your price list and adds VAT.
- 3Send a branded PDF by WhatsApp, text or email, then turn the accepted quote into an invoice in one tap.
ViperJob is the quote and invoice app for UK trades, on Android. Free for 3 quotes a month. ViperJob Pro is £12.99 a month or £119.99 a year, with a 14-day free trial.
Launch offer: £8.99 a month for your first 12 months with code FOUNDER (500 of 500 places left).
(opens in a new tab)See what ViperJob doesQuestions
Are the calculators free?
Yes. There's nothing to sign up for and no email needed.
Is what I type saved anywhere?
No. The sums are worked out in your browser, on your own device, and the numbers you type aren't sent to us.
Can I rely on the results for tax?
They're plain maths to help you price work, not tax or accounting advice. For your own tax position, check HMRC's guidance or ask an accountant.
Is there a quicker way to quote?
ViperJob is a quote and invoice app for UK trades, on Android. You say the job and it prices the lines from your own price list, adds VAT and sends a branded PDF. The free plan covers 3 quotes or jobs a month; ViperJob Pro is £12.99 a month or £119.99 a year, with a 14-day free trial.