Browse by Category

Choose a category to see all available converters, or use the search bar to find a specific unit pair.

straighten

Length / Distance

Convert between kilometers, miles, meters, feet, inches, centimeters, and more.

km to miles meters to feet inches to cm miles to km
scale

Weight / Mass

Convert between kilograms, pounds, grams, ounces, stone, and more.

kg to lb grams to oz lb to kg stone to kg
speed

Speed

Convert between mph, km/h, meters per second, knots, and more.

mph to km/h km/h to mph m/s to km/h knots to mph
water_drop

Volume / Capacity

Convert between liters, gallons, milliliters, cups, fluid ounces, and more.

liters to gal ml to cups gal to liters fl oz to ml
storage

Data / Storage

Convert between KB, MB, GB, TB, and PB for storage, or Mb to MB and Gb to GB for bit-to-byte conversions.

MB to GB GB to TB KB to MB Mb to MB
thermostat

Temperature

Convert between Celsius, Fahrenheit, and Kelvin. Temperature uses offset formulas, not simple multiplication. See the step-by-step breakdown for every conversion.

°C to °F °F to °C °C to K K to °C

Most Searched Conversions

arrow_forwardKilometers to Miles arrow_forwardKilograms to Pounds arrow_forwardCelsius to Fahrenheit arrow_forwardmph to km/h arrow_forwardLiters to Gallons arrow_forwardInches to Centimeters arrow_forwardPounds to Kilograms arrow_forwardMeters to Feet arrow_forwardFahrenheit to Celsius arrow_forwardGrams to Ounces arrow_forwardMB to GB arrow_forwardMiles to Kilometers

How Unit Conversion Works

Most unit conversions use a fixed ratio between two units. To convert kilometers to miles, multiply by 0.6214. To convert kilograms to pounds, multiply by 2.2046. The key is knowing the conversion factor for each pair.

Temperature is the exception. Because Celsius, Fahrenheit, and Kelvin have different zero points, temperature conversion requires a formula with an offset, not just multiplication. For example, °F = °C × 9/5 + 32.

Data units can also cause confusion. Storage is measured in bytes (KB, MB, GB, TB), while transfer speeds use bits (Mbps, Gbps). Since 1 byte = 8 bits, dividing a speed in Mbps by 8 gives the equivalent in MB/s.

Finding the Right Converter

Each category hub groups related units together. If you know the units you need, use the converter above or search by name. If you are converting between metric and imperial systems, start with the length or weight hubs. For cooking and recipes, the volume hub covers cups, tablespoons, and fluid ounces. For file sizes and bit-to-byte conversions, use the data hub.

Frequently Asked Questions

The most searched unit conversions are kilometers to miles, kilograms to pounds, Celsius to Fahrenheit, liters to gallons, and mph to km/h. These cover the most common metric-to-imperial and imperial-to-metric needs for travel, cooking, fitness, and everyday use.
Each metric-to-imperial conversion has a specific factor. For length, multiply kilometers by 0.6214 to get miles, or meters by 3.2808 to get feet. For weight, multiply kilograms by 2.2046 to get pounds. For volume, multiply liters by 0.2642 to get gallons. Temperature uses a different formula: °F = °C × 9/5 + 32. See the formulas hub for complete guides.
MB (megabyte) is a unit of data measured in bytes. Mb (megabit) is measured in bits. The difference is a factor of 8: 1 MB = 8 Mb. File sizes use bytes (KB, MB, GB), while network speeds are often quoted in bits (Mbps). To convert between them, divide or multiply by 8. See the data converter for all bit and byte conversions.
Unlike other unit conversions that use simple multiplication, temperature requires offset formulas because the scales have different zero points. Celsius to Fahrenheit: °F = °C × 9/5 + 32. Fahrenheit to Celsius: °C = (°F - 32) × 5/9. Celsius to Kelvin: K = °C + 273.15. See the temperature converter for instant results.