📐 Metric & Imperial

Unit Converter

Convert length, weight, temperature, volume, speed, and area. Metric to imperial and back — instantly.

Quick Reference

Common Conversions

Metric Imperial
1 km0.6214 miles
1 kg2.2046 lbs
1 metre3.2808 feet
1 cm0.3937 inches
1 litre0.2642 US gal
0°C32°F
100°C212°F
1 km/h0.6214 mph

Unit Conversion FAQ

Multiply by 9/5, then add 32. So 20°C = (20 × 1.8) + 32 = 68°F. Key benchmarks: 0°C = 32°F (freezing), 20°C = 68°F (comfortable), 37°C = 98.6°F (body temp), 100°C = 212°F (boiling).

1 pound = 0.4536 kg. 1 kg = 2.2046 lbs. Common references: 100 lbs = 45.4 kg; 150 lbs = 68 kg; 200 lbs = 90.7 kg. Canada officially uses kilograms but many Canadians still think in pounds for body weight.

1 mile = 1.609 km. 1 km = 0.621 miles. Common conversions: 5 km = 3.1 mi; 10 km = 6.2 mi; 100 km/h = 62.1 mph. Canada's highway limit of 100 km/h equals about 62 mph.

1 US gallon = 3.785 litres. Note: an Imperial (UK/Canadian) gallon is larger at 4.546 litres. Canada sells fuel in litres — multiply the litre price by 3.785 to compare with US gallon prices.

Mass (kg, lbs) measures the amount of matter and stays constant. Weight is the force gravity exerts on that mass — it varies on the moon vs Earth. In everyday use the terms are used interchangeably, and bathroom scales display mass in kg.