How many centimetres is 1 inch, and how many kg is 1 pound (lb)?

1 inch is exactly 2.54 cm (1 foot = 12 inches = 30.48 cm). For weight, 1 pound (lb) equals approximately 0.4536 kg (453.6 g), and 1 ounce (oz) is about 28.35 g.

How do I convert square metres (m²) to Korean pyeong or square feet?

1 pyeong equals roughly 3.3058 m² (multiply m² by 0.3025 to get pyeong). 1 m² also equals about 10.7639 sq ft.

What is the formula for Fahrenheit (°F) to Celsius (°C)?

Celsius = (Fahrenheit − 32) × 5 ÷ 9. For example, 32 °F is 0 °C, 100 °F is roughly 37.8 °C, and 350 °F (common oven heat) is about 176.7 °C.

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Smart Unit Converter

Convert length, area, weight, volume, temperature, speed, data, and time units in real-time.

0.393701in

Unit Conversion Table

Millimeter (mm)

Centimeter (cm)

Meter (m)

0.01

Kilometer (km)

0.00001

Inch (in)

0.393701

Foot (ft)

0.032808

Yard (yd)

0.010936

Mile (mile)

0.000006

Convert length (inch to cm), weight (lb to kg), area (sq ft, m², pyeong) & temperature (°F to °C)

Whether you are converting Fahrenheit (°F) in a recipe to Celsius (°C), inches and feet in monitor or furniture dimensions to centimetres, pounds (lb) and ounces (oz) in a gym log to kilograms (kg), or Korean apartment floor area between square metres (m²) and pyeong, unfamiliar units send you searching every time. Convert length, area, weight, volume, temperature, pressure, speed, fuel economy, data and time live on one screen.

How to use it

Pick the unit category you need: length, area, weight, volume, temperature and more.
Enter a number and select the source unit (e.g., inches, pounds, Fahrenheit, m²).
Read the instant conversions across every matching metric and imperial unit at once.

Frequently asked questions

How many centimetres is 1 inch, and how many kg is 1 pound (lb)?: 1 inch is exactly 2.54 cm (1 foot = 12 inches = 30.48 cm). For weight, 1 pound (lb) equals approximately 0.4536 kg (453.6 g), and 1 ounce (oz) is about 28.35 g.
How do I convert square metres (m²) to Korean pyeong or square feet?: 1 pyeong equals roughly 3.3058 m² (multiply m² by 0.3025 to get pyeong). 1 m² also equals about 10.7639 sq ft.
What is the formula for Fahrenheit (°F) to Celsius (°C)?: Celsius = (Fahrenheit − 32) × 5 ÷ 9. For example, 32 °F is 0 °C, 100 °F is roughly 37.8 °C, and 350 °F (common oven heat) is about 176.7 °C.