Unit Converter Online Free

Our free online unit converter lets you convert between hundreds of units across 7 categories: length, weight, temperature, speed, area, volume and digital data.

Length Converter

Converting length units is one of the most common needs:

• Kilometers to Miles — 1 km = 0.621 miles
• Miles to Kilometers — 1 mile = 1.609 km
• Feet to Meters — 1 foot = 0.3048 meters
• Inches to Centimeters — 1 inch = 2.54 cm
• Meters to Feet — 1 meter = 3.281 feet

Weight Converter

• Kilograms to Pounds — 1 kg = 2.205 lbs
• Pounds to Kilograms — 1 lb = 0.453 kg
• Grams to Ounces — 1 gram = 0.0353 oz
• Tonnes to Kilograms — 1 tonne = 1000 kg

Temperature Converter

Temperature conversion is essential for cooking, science and weather:

• Celsius to Fahrenheit — F = (C × 9/5) + 32
• Fahrenheit to Celsius — C = (F - 32) × 5/9
• Celsius to Kelvin — K = C + 273.15

Common conversions:

• 0°C = 32°F (freezing point)
• 100°C = 212°F (boiling point)
• 37°C = 98.6°F (body temperature)
• 20°C = 68°F (room temperature)

Speed Converter

• km/h to mph — 1 km/h = 0.621 mph
• mph to km/h — 1 mph = 1.609 km/h
• Knots to km/h — 1 knot = 1.852 km/h
• m/s to km/h — 1 m/s = 3.6 km/h

Digital Data Converter

In the digital age, data unit conversion is important:

• 1 Kilobyte = 1,024 Bytes
• 1 Megabyte = 1,024 Kilobytes
• 1 Gigabyte = 1,024 Megabytes
• 1 Terabyte = 1,024 Gigabytes

Try our Unit Converter