🔄 Converters

Unit Converters

19 free, accurate converters for temperature, length, cooking measurements, number bases, clothing sizes, time zones and more. No sign-up, instant results.

Measurement & Units

Temperature Converter
Convert temperature between Celsius, Fahrenheit, and Kelvin instantly. Includes common reference temperatures for cooking, science, and everyday use.
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Height & Weight Converter
Convert height between feet/inches and centimetres. Convert weight between pounds, stone, and kilograms. Essential for medical forms and international use.
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km to Miles Calculator
Convert kilometres to miles and miles to kilometres instantly. Also converts speed between km/h and mph.
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Angle Converter — Degrees, Radians & Gradians
Convert angles between degrees, radians, gradians, and turns. Calculate arc length and sector area from angles. Full conversion table included.
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Cooking & Baking

Cooking Unit Converter
Convert between all cooking measurements — cups to ml, tablespoons to grams, ounces to grams, Fahrenheit to Celsius, and more.
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Cups to Grams Converter
Convert US cups to grams for any ingredient. Accurate conversions for flour, sugar, butter, rice, oats, and 30+ common cooking ingredients.
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Oven Temperature Converter
Convert oven temperatures between Celsius, Fahrenheit, and Gas Marks instantly. Includes a complete gas mark reference table.
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Oven Temperature Conversion Calculator
Convert oven temperatures between gas mark, Celsius, and Fahrenheit. Adjust for fan ovens and find equivalent settings.
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Butter to Oil Converter
Convert butter to oil in any recipe. Find the right oil quantity when substituting for butter in baking and cooking.
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Cake Tin Size Converter
Convert cake recipes between different tin sizes. Calculate whether to scale ingredients up or down when using a different size tin than specified.
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Yeast Conversion Calculator (Fresh, Active Dry, Instant)
Convert between fresh yeast, active dry yeast, and instant yeast accurately for any bread recipe. Proper proofing times and rates included.
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Numbers & Maths

Binary, Decimal & Hex Converter
Convert between binary, decimal, hexadecimal, and octal number systems. See the full conversion with step-by-step working.
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Number Base Converter (Binary, Hex, Octal)
Convert numbers between binary (base 2), octal (base 8), decimal (base 10), and hexadecimal (base 16). Essential for programming and computer science.
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Roman Numeral Converter
Convert any number to Roman numerals or convert Roman numerals back to numbers. Works for all values from 1 to 3,999 with rules explained.
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Sizes, Time & Health

Shoe Size Converter (UK, US, EU, CM)
Convert shoe sizes between UK, US, European, and centimetres for men, women, and kids. Foot length measuring guide for accurate sizing.
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Clothing Size Converter
Convert clothing sizes between UK, US, EU, and Asian sizing for women's, men's, and children's clothing and shoes.
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Time Zone Difference Calculator
Calculate the time difference between any two time zones. Convert a time from your local zone to any destination worldwide.
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Pace to Speed Converter
Convert running pace (min/km or min/mile) to speed (km/h or mph) and vice versa. Includes treadmill speed settings and race pace equivalents.
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HbA1c to Average Blood Glucose Converter (UK)
Convert HbA1c (mmol/mol or %) to average blood glucose (mmol/L and mg/dL). NHS diabetes thresholds and historical units.
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About our conversion calculators

Unit conversion is one of the most common everyday calculations, and these converters cover the ones people need most: temperature (Celsius, Fahrenheit, Kelvin, gas marks), length and distance (km to miles, metric to imperial), cooking measurements (cups to grams, oven temperatures, ingredient conversions), number bases (binary, decimal, hexadecimal), clothing and shoe sizes across countries, time zones, and more.

Each converter is instant, accurate, and free — no sign-up, no app required. Where a conversion isn’t a simple multiplication (cooking cups differ between countries, clothing sizes follow no single standard, oven temperatures span three scales), the guides explain the differences so you get the right answer rather than a misleading one.

Bookmark this page as a single home for the conversions you reach for repeatedly, whether you’re following an American recipe, packing for international travel, or working through a maths or science problem.