Free business calculators
Free calculators for tradespeople and small businesses
Pricing a job, setting your rate, working out your margin: it all comes down to getting the numbers right, and that is hard to do between jobs when there is no time to sit down and work it out. These tools do the maths for you. Tell one what you need to work out and it gives you an answer straight away, and if you are planning a website there is a structure planner alongside the calculators. They are built for tradespeople, contractors, sole traders, and small businesses across the UK. All free, and none of them ask you to sign up or hand over an email.
Choose a free tool
Not sure where to start? Pick whichever matches what you are trying to work out.
Quote & Invoice Generator
Create a quote or invoice in seconds
Add your line items, set your VAT, and get a clean, professional quote or invoice you can print or save as a PDF. No sign-up, no watermark, and nothing is saved.
Use the tool →Website Structure Planner
See how to structure your website
Pick your business type and get a homepage wireframe, a recommended navigation menu, and a page-by-page content plan. Ideal if you're planning a new website and don't know where to start.
Use the tool →Website Cost Recoup Calculator
See if your website has paid for itself
See how many jobs it takes for a website to pay for itself, based on what it cost and your profit per job. Useful if you're weighing up whether a new website is worth it.
Use the tool →Tradesperson Day Rate Calculator
Work out what to charge per hour or day
Work out the hourly and day rate you need to charge based on your income goal, overheads, and realistic billable days. Built for contractors and sole traders who want a rate that actually covers their costs.
Use the tool →Trade Job Pricing Calculator
Price a job so you make a profit
Work out the right price to quote from your labour, materials, expenses, and target margin. Ideal for tradespeople who want to quote with confidence rather than guess.
Use the tool →Markup vs Margin Calculator
Convert between markup and margin
Convert between markup and margin and see your selling price and profit either way. Handy if you've ever priced a job expecting one number and ended up with another.
Use the tool →Disclaimer: These calculators are provided for general guidance only. Results are estimates based on the figures you enter and may not reflect your full costs, tax position, legal obligations, or business circumstances. They are not financial, tax, legal, or professional advice. You should check the figures yourself and speak to a qualified adviser where needed. Kwise Web accepts no liability for decisions made using these tools.
Why use these calculators?
Pricing is one of the few things you fully control, and it is easy to get wrong when you are quoting on the fly. Charge too little and you can stay fully booked while barely making a profit. Guess a margin instead of working it out and a job that looked fine on paper can quietly lose you money. These calculators handle the numbers that matter: your rate, what to quote, your margin, and whether something like a website earns its cost back. You get a straight answer, so you can price off real figures rather than a gut feeling.
Ready to get your numbers?
Pick whichever calculator matches what you are working out, your rate, a job price, your margin, or website spend, and you will have the answer in front of you.