All Tools

27 free tools and growing. All calculations run in your browser — no data uploaded.

UK Essentials

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Gas Mark Converter

Convert UK Gas Mark (1-10) to Celsius, Fahrenheit, and fan oven temperatures.

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MPG to L/100km Converter

Convert UK MPG (miles per gallon, Imperial) to L/100km — the UK fuel economy converter.

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Baking Weight Converter

Convert grams, kilograms, ounces, and pounds — the UK baking weight converter for recipes.

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Baking Volume Converter

Convert ml, litres, UK cups, US cups, tablespoons, and teaspoons — note UK and US cups differ.

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Shoe Size Converter

Convert shoe sizes between EU, UK, US men, and US women — so you are not guessing when you buy abroad.

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Kids Clothing Size Chart

Convert kids clothing sizes between UK Age, US, EU (height cm), and CN — a reference chart for buying children's clothes abroad.

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Adult Clothing Size Chart

Convert adult clothing sizes between UK, US, EU, and CN — a reference chart for buying clothes abroad.

Unit Converters

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Weight Converter (kg, lb, oz, stone)

Convert kg, g, lb, oz, and stone — including stone, the UK body-weight unit.

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Length Converter (miles, km, feet, m)

Convert miles, km, metres, feet, inches, and yards — for UK road signs and height.

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Volume Converter (gallons, litres, pints)

Convert litres, ml, UK and US gallons/pints — key: UK and US gallons are NOT the same.

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Speed Converter (mph, km/h, knots)

Convert mph, km/h, m/s, knots, and ft/s — for UK road speeds vs European km/h.

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Area Converter (m², ft², acres)

Convert square metres, square feet, square yards, acres, and hectares — for UK property and land area.

Tax & Money

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VAT Calculator

UK and EU VAT calculator: add or remove VAT, with rates for the UK, Germany, France, Italy, Spain and more.

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UK Income Tax Calculator

Calculate your UK take-home pay after Income Tax and National Insurance — 2026/27 and 2025/26 tax years.

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UK Mortgage Calculator

Calculate your monthly mortgage repayments — UK property price, deposit, interest rate and term.

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UK Stamp Duty Calculator

Calculate UK Stamp Duty Land Tax (SDLT) on any property price — standard, first-time buyer, or second home.

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Currency Converter (GBP, EUR, USD)

Live currency converter for GBP, EUR, USD and 9 more — for cross-border spending after Brexit.

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UK Rent vs Buy Calculator

Work out whether renting or buying leaves you better off over 10 years — comparing mortgage, rent, and investing the difference.

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UK House Buying Costs Calculator

Work out the full cash you need to buy a home — deposit, stamp duty, legal fees, survey, mortgage fee and removal costs.

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UK Deposit Savings Calculator

Work out how long it will take to save a house deposit, and what a Lifetime ISA adds on top.

Everyday Tools

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Percentage Calculator

Calculate percentages — find % of a number, what % one number is of another, and percentage increase/decrease.

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Temperature Converter (°C, °F, Kelvin)

Convert Celsius, Fahrenheit, and Kelvin for any value — weather, cooking, and science. Not for oven Gas Mark.

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Time Converter (seconds, hours, days)

Convert milliseconds to years — seconds, minutes, hours, days, weeks, months, and years in one tool.

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UK BMI Calculator

Work out your Body Mass Index (BMI) in stone or kg, and see where you sit on the NHS healthy weight scale.

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UK Fuel Cost Calculator

Work out what a journey costs in fuel — enter distance, MPG and the current price at the pump.

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UK Calorie Calculator

Work out how many calories you need each day to lose, maintain, or gain weight — from your age, height, weight and activity level.

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UK Cost of Living Calculator

Add up your monthly outgoings — rent, council tax, bills, food, transport — and see what's left over to save.

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