Unit Converter

Convert between length, weight, area, and other units with instant results.

1000mm
Millimeter
100cm
Centimeter
0.001km
Kilometer
39.3701in
Inch
3.28084ft
Feet
1.09361yd
Yard
0.000621371mi
Mile
3.3
Ja (尺)
0.550001
Gan (間)
0.00916667
Jeong (町)
0.0025463
Ri (里)
0.000539957nmi
💡 Click on any unit card below to set it as the base unit.

Mastering Unit Conversions

Units of measurement are fundamental to science, industry, and daily life. However, with different systems used globally, confusion often arises. This tool bridges the gap between the Metric system, Imperial system, and traditional units, making international communication and calculation seamless.

🌍 Global Measurement Systems

  • Metric System (SI): The international standard used by most countries (Meter, Kilogram, Celsius).
  • Imperial System: Primarily used in the United States, UK, and Liberia (Inch, Foot, Pound, Fahrenheit).
  • Traditional Units: Specific to regions like East Asia (Pyeong, Don, Catty) or maritime/aviation contexts.

Practical Usage Guide

📏 Length & Area

Real Estate: While the US uses Square Feet (sq ft), many Asian countries use 'Pyeong' or 'Tatami'. Use this tool to convert apartment sizes correctly when looking at international properties.

Travel & Driving: Speed limits in the US are in MPH (Miles Per Hour), while Canada and Europe use km/h. Always check the local unit before driving to avoid tickets!

⚖️ Weight & Cooking

Kitchen Conversions: Following a recipe from another country? Converting ounces (oz) to grams (g) or Fahrenheit to Celsius can save your dish. Remember: 1 oz is roughly 28g, and 1 lb is about 0.45kg.

Frequently Asked Questions (FAQ)

Q. Why are there two types of Gallons?

There is the US Gallon (~3.785L) and the Imperial (UK) Gallon (~4.546L). This converter currently uses the standard US Liquid Gallon. Be careful when calculating fuel efficiency in different countries!

Q. How is data storage calculated (GB vs GiB)?

Storage manufacturers often define 1KB as 1000 bytes (Decimal), while operating systems define it as 1024 bytes (Binary). This is why a "1TB" drive might show up as only ~931GB on your computer. Our tool uses the standard 1024-based binary calculation.

Q. What is Absolute Zero in Temperature?

Absolute Zero is the lowest theoretical temperature possible, where molecular motion stops. It is 0 Kelvin (K), which equals -273.15°C or -459.67°F.