📐 Unit Converter
Easily convert length, weight, temperature, and area units
1 Meter (m) =
0.001
Kilometer (km)
Unit Conversion Formulas
Length
1m = 100cm = 1,000mm = 0.001km, 1inch = 2.54cm, 1ft = 0.3048m, 1mile ≈ 1,609.34m
Weight
1kg = 1,000g = 1,000,000mg = 0.001t, 1lb ≈ 0.453592kg, 1oz ≈ 28.3495g
Temperature
Celsius to Fahrenheit: °F = °C × 9/5 + 32. Fahrenheit to Celsius: °C = (°F − 32) × 5/9. Celsius to Kelvin: K = °C + 273.15
Area
1m² = 10,000cm² = 0.000001km², 1 pyeong ≈ 3.30579m², 1 acre ≈ 4,046.86m²
Common Conversion Examples
100°C (boiling point of water) = 212°F = 373.15K
1 mile ≈ 1.61km
1kg ≈ 2.2lb
A 30-pyeong apartment ≈ 99.17m²
1 acre ≈ 4,046.86m² ≈ 1,224 pyeong
Frequently Asked Questions
Q. How many square meters is one pyeong exactly?
A. 1 pyeong = 3.30579m². It's a traditional Korean unit commonly used in real estate listings — not an SI unit, but still widely used in Korea.
Q. Why is the Celsius-to-Fahrenheit formula so complex?
A. Celsius is based on water's freezing point (0°C) and boiling point (100°C), while Fahrenheit uses a different reference, so both a scaling factor (9/5) and an offset (32) are needed to convert between them.
Q. Why do mile-to-kilometer conversions vary slightly between calculators?
A. The internationally standardized value for 1 mile is 1,609.344m; different calculators round decimals differently, producing tiny discrepancies.
Q. Is an ounce (oz) a weight or volume unit?
A. Ounce is used for both weight (mass) and volume (fluid) measurements. This calculator uses the weight unit (1oz ≈ 28.35g).
Q. When is an acre used?
A. Acres are mainly used to describe land area in the US and UK. In Korea, it's occasionally used as a reference when describing golf courses or large plots of land.