All Free Calculators
20 free tools for UK businesses, freelancers, and homeowners. No signup needed.
Finance Calculators
Tax, VAT, salary, and investment calculators for UK businesses
Profit Margin Calculator
Calculate your gross profit margin, net margin, and markup instantly. Essential for UK businesses and freelancers pricing their products and services.
PopularVAT Calculator
Add or remove VAT from any price instantly. Supports all UK VAT rates — standard 20%, reduced 5%, and zero rate.
PopularUK Income Tax Calculator
Calculate your exact take-home pay, income tax, and National Insurance contributions for 2025/26. Includes student loan deductions.
PopularFreelancer Day Rate Calculator
Find out exactly what day rate and hourly rate to charge as a UK freelancer based on your desired annual income, tax, and expenses.
PopularBreak-Even Calculator
Find out exactly how many units you need to sell to cover your costs. Essential for pricing decisions and business planning.
Markup Calculator
Calculate selling price from cost and markup percentage, or find the markup on any product. Understand the difference between markup and margin.
ROI Calculator
Calculate the return on investment for any business decision — marketing spend, equipment purchase, or business investment.
Savings Goal Calculator
Work out how much to save each month to hit your savings target. Includes compound interest calculations.
Salary to Hourly Calculator
Convert your annual salary to hourly, daily, weekly, and monthly rates — with and without tax deductions.
Discount Calculator
Calculate sale prices, find discount percentages, and work out how much you save on any purchase.
Property Calculators
Mortgage, stamp duty, rental yield and affordability calculators
Stamp Duty Calculator
Calculate exactly how much stamp duty you will pay on any UK property purchase. Updated for 2025/26, including first-time buyer and second home rates.
PopularMortgage Affordability Calculator
Estimate how much you can borrow based on your income. See monthly repayments for different loan amounts and interest rates.
PopularRent Affordability Calculator
Find out the maximum rent you can afford based on your income and expenses. Based on UK rental affordability guidelines.
Rental Yield Calculator
Calculate gross and net rental yield on any buy-to-let property. Essential due diligence before any property investment.
Business Calculators
Profit, break-even, ROI and business planning calculators
Ecommerce Profit Calculator
Calculate your actual profit per order after product costs, shipping, platform fees, and advertising spend. Works for Shopify, Amazon, eBay, and Etsy.
PopularContractor vs Employee Calculator
Compare your take-home pay as a PAYE employee vs a contractor operating through a limited company. Includes IR35 considerations.
Health & Fitness Calculators
BMI, calories, sleep cycles, and hydration calculators
BMI Calculator
Calculate your BMI and see which health category you fall into. Includes NHS guidelines and healthy weight ranges.
PopularSleep Calculator
Find the optimal times to wake up based on 90-minute sleep cycles so you wake feeling refreshed instead of groggy.
PopularCalorie Calculator
Calculate your Total Daily Energy Expenditure (TDEE) and find exactly how many calories you need to lose weight, maintain, or gain muscle.
Water Intake Calculator
Find out exactly how much water you should drink daily based on your weight, activity level, and climate.