Unit Converters

Length Converter

Convert between centimetres, inches, feet, metres, kilometres, miles, and all other length units instantly — metric and imperial both supported.

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Weight Converter

Convert kilograms to pounds, grams to ounces, stone to kilograms, and more — essential for fitness tracking, cooking, and international shipping.

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Temperature Converter

Convert Celsius to Fahrenheit, Fahrenheit to Celsius, and both to Kelvin — used daily for weather, cooking, and science.

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Volume Converter

Convert cups to millilitres, litres to gallons, fluid ounces to ml, tablespoons to teaspoons, and every other cooking and liquid measurement.

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Speed Converter

Convert mph to km/h, knots to mph, and metres per second to km/h — ideal for driving, aviation, fitness, and travel planning.

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Area Converter

Convert square feet to square metres, acres to hectares, and more — used by estate agents, architects, and property buyers worldwide.

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Energy & Power Converter

Convert joules to calories, kWh to joules, and watts to amps — useful for science homework, electricity bills, and nutrition labels.

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Data Size Converter

Convert between bytes, KB, MB, GB, and TB instantly — essential for comparing storage devices, cloud storage plans, and file sizes.

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Currency Converter

Convert between USD, GBP, EUR, AUD, and 150+ currencies using live exchange rates — ideal for travel, international shopping, and business.

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About Our Free Unit Converters

Whether you are cooking a recipe from another country, tracking your fitness in different units, doing homework, or planning international travel, our 9 free unit converters give you instant, accurate conversions between every major measurement system — no app, no account, and no sign-up required.

Our free length converter handles centimetres to inches, feet to metres, kilometres to miles, millimetres to inches, and every other common length unit — metric and imperial both supported. The weight converter converts kilograms to pounds, grams to ounces, stone to kilograms, and more — essential for fitness, cooking, and shipping. The temperature converter converts Celsius to Fahrenheit, Fahrenheit to Celsius, and both to Kelvin — used daily for weather, cooking, and science.

In the kitchen? The volume converter converts cups to millilitres, litres to gallons, fluid ounces to ml, tablespoons to teaspoons, and every other cooking measurement. Checking your speed? The speed converter converts mph to km/h, knots to mph, and metres per second to km/h instantly. Buying or renting property? The area converter converts square feet to square metres, acres to hectares, and more — used by estate agents, architects, and buyers worldwide.

The energy and power converter converts joules to calories, kWh to joules, and watts to amps — useful for science, electricity bills, and nutrition labels. The data size converter converts bytes, KB, MB, GB, and TB — essential for comparing storage devices, cloud plans, and file sizes. And the currency converter converts between USD, GBP, EUR, AUD, and 150+ currencies using live exchange rates — ideal for travel, shopping, and international business. All converters are free, instant, and store none of your data.

  • Length converter — cm, inches, feet, metres, miles & more
  • Weight converter — kg, lbs, grams, ounces, stone & more
  • Temperature converter — Celsius, Fahrenheit & Kelvin
  • Volume converter — cups, ml, litres, gallons & more
  • Speed converter — mph, km/h, knots & m/s
  • Area converter — sq ft, sq m, acres & hectares
  • Energy & power converter — joules, calories, kWh & watts
  • Data size converter — bytes, KB, MB, GB & TB
  • Currency converter — USD, GBP, EUR & 150+ currencies

Browse Other Calculator Categories

💰 Finance & Loan Calculators
➗ Math & Statistics Calculators
💼 Business & Tax Calculators
💪 Health & Fitness
🏡 Home & Lifestyle Calculators

Frequently Asked Questions

There are exactly 2.54 centimetres in one inch. To convert inches to centimetres multiply by 2.54, and to convert centimetres to inches divide by 2.54. For example, 10 inches = 25.4 cm and 100 cm = 39.37 inches. Use our free length converter for instant results with any length unit.
To convert kilograms to pounds, multiply by 2.2046. For example, 70 kg = 154.32 lbs. To convert pounds to kilograms, divide by 2.2046. For example, 150 lbs = 68.04 kg. Use our free weight converter for instant kg to lbs and lbs to kg conversions.
Use the formula: (°C × 9/5) + 32 = °F. For example, 100°C = 212°F. To convert Fahrenheit to Celsius: (°F − 32) × 5/9 = °C. For example, 98.6°F = 37°C (normal body temperature). Use our free temperature converter for any instant conversion.
One US cup equals 236.59 ml. One UK metric cup equals 250 ml. For cooking, 1 cup ≈ 240 ml is the standard working conversion. Use our free volume converter to convert between cups, ml, litres, fluid ounces, pints, and tablespoons instantly.
To convert mph to km/h, multiply by 1.60934. For example, 60 mph = 96.56 km/h. To convert km/h to mph, divide by 1.60934. For example, 100 km/h = 62.14 mph. Use our free speed converter for any speed unit conversion.
To convert square feet to square metres, multiply by 0.0929. For example, 500 sq ft = 46.45 m². To convert square metres to square feet, multiply by 10.7639. For example, 50 m² = 538.2 sq ft. Use our free area converter for instant results.
To convert megabytes to gigabytes, divide by 1,024. For example, 2,048 MB = 2 GB. To convert GB to MB, multiply by 1,024. For example, 5 GB = 5,120 MB. Use our free data size converter for instant conversions between bytes, KB, MB, GB, and TB.
Yes — all 9 unit converters on EverydayCalcPro are 100% free. No account required, no subscription, no hidden fees. Every converter works instantly on desktop, tablet, and mobile. Metric and imperial units are both supported across all tools.