Universal Unit Converter: Convert Any Measurement Instantly
Unit conversion is one of those tasks that seems simple but causes errors when done mentally. From cooking (cups to milliliters) to engineering (imperial to metric) to data storage (GB to TB), a reliable unit converter with accurate conversion factors prevents costly mistakes.
Try Unit Converter Free →Unit Categories Supported
Length: millimeters, centimeters, meters, kilometers, inches, feet, yards, miles, nautical miles. Weight/Mass: milligrams, grams, kilograms, tonnes, ounces, pounds, stones. Temperature: Celsius, Fahrenheit, Kelvin. Area: square meters, acres, hectares, square feet, square miles. Volume: milliliters, liters, fluid ounces, cups, pints, gallons. Speed: km/h, mph, m/s, knots. Data: bits, bytes, KB, MB, GB, TB, PB.
Metric vs Imperial: The Global Divide
Only three countries officially use the imperial system: the USA, Myanmar, and Liberia. The rest of the world uses the metric (SI) system. For international work — whether in science, engineering, or e-commerce — accurate metric-to-imperial conversion is essential. Common confusions: US fluid ounces vs UK fluid ounces differ, US gallons vs UK gallons differ.
Temperature Conversion Formulas
Celsius to Fahrenheit: °F = (°C × 9/5) + 32. Fahrenheit to Celsius: °C = (°F − 32) × 5/9. Celsius to Kelvin: K = °C + 273.15. Common reference points: 0°C = 32°F (water freezes), 100°C = 212°F (water boils), 37°C = 98.6°F (body temperature).
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Data Storage Conversion
The binary vs decimal megabyte is a common source of confusion. 1 GB = 1,000 MB (decimal/marketing). 1 GiB = 1,024 MiB (binary/technical). Hard drive manufacturers use decimal (makes drives seem bigger). Operating systems traditionally use binary (so a "1 TB drive" shows as ~931 GB in Windows). Formly's converter supports both IEC binary and SI decimal prefixes.
Cooking and Baking Conversions
Recipe conversion is one of the most common unit converter use cases. Key cooking conversions: 1 cup = 240 mL, 1 tablespoon = 15 mL, 1 teaspoon = 5 mL, 1 ounce (weight) = 28.35 grams. Note that volume measurements for dry ingredients (flour, sugar) don't translate directly to weight — density varies.
Currency Conversion
Currency conversion is not included in the standard unit converter (exchange rates fluctuate). For currency conversion, use a live exchange rate service like Google Finance or XE.com.
Frequently Asked Questions
Does the unit converter show the formula?⌄
Yes. The converter shows the conversion formula alongside the result so you can understand the math.
Does it support currency conversion?⌄
Currency conversion is not included as rates change constantly. Use a live currency converter for financial calculations.
Is there a mobile app?⌄
The web tool is fully responsive and works as a PWA on mobile devices.
Is it free?⌄
Yes. Completely free with no limits.
Can I do reverse conversion?⌄
Yes. The from/to units can be swapped with a single click.
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