Why Use Quick Calculator UK?
Quick Calculator UK is a free, comprehensive collection of online calculators built specifically for people living and working in the United Kingdom. Whether you are planning a home improvement project, trying to understand your payslip, working out how much tax you owe, or simply checking a percentage, our tools give you instant, accurate answers without fuss.
Every calculator on this site runs entirely in your web browser. There is nothing to download, no account to create, and no personal data to hand over. You type in your numbers, and the result appears immediately. It is that simple.
Calculators You Can Trust
All of our UK-specific calculators are built using the latest official figures. Our tax and salary tools use HM Revenue and Customs (HMRC) rates for the 2025/26 tax year (6 April 2025 to 5 April 2026), including the current personal allowance of £12,570, basic rate of 20%, higher rate of 40%, and additional rate of 45%. Our employment calculators reflect the National Minimum Wage and National Living Wage rates that came into effect in April 2025.
Our DIY and building calculators use industry-standard coverage rates recommended by leading UK paint, plaster, and wallpaper manufacturers. Whether you are buying Dulux, Crown, or Johnstone's, the figures are reliable and designed to reduce waste while ensuring you buy enough material to finish the job.
Built for Every Device
We know that people reach for calculators at all sorts of moments — standing in a paint aisle at B&Q, sitting at a desk during a pay review, or lying on the sofa wondering about a tax refund. That is why every page on Quick Calculator UK is fully responsive. Our tools work beautifully on mobile phones, tablets, laptops, and desktop screens. Input fields are large enough to tap easily, results are clear and well-formatted, and pages load quickly even on slower connections.
Our Calculator Categories
DIY & Building — Planning a weekend project? Our paint calculator tells you exactly how many litres and tins you need. The plastering calculator works out bags of bonding or skim coat. And the wallpaper calculator factors in pattern repeats so you do not end up a roll short.
Employment & Salary — The salary calculator is our most popular tool. Enter your gross annual or monthly salary and instantly see your take-home pay after income tax, National Insurance, pension contributions, and student loan repayments. We also offer dedicated calculators for minimum wage, overtime pay, holiday entitlement, and statutory redundancy pay.
Tax & VAT — Our income tax calculator breaks down exactly how much you pay in each tax band. The VAT calculator lets you add or remove VAT at standard (20%), reduced (5%), or zero rate. And our self-assessment calculator helps freelancers and sole traders estimate their tax bill, including Class 2 and Class 4 National Insurance contributions.
Everyday Tools — Check your BMI using either metric or imperial measurements, calculate your exact age down to the day, or use the percentage calculator for quick maths. These are the tools you reach for when you need a fast, reliable answer.
Privacy First
All calculations happen locally on your device. We do not send your numbers to any server, we do not store your inputs, and we do not track what you calculate. The only data we collect is standard anonymous analytics to help us understand which calculators are most useful, so we can focus on making them better.
Always Free, Always Improving
Quick Calculator UK is supported by advertising, which means every tool remains completely free for you to use. We are constantly adding new calculators and updating existing ones. If there is a calculator you would like to see, get in touch and let us know.
Bookmark this page and come back whenever you need a quick answer. We are here to save you time, save you money, and take the guesswork out of the numbers that matter.