Conversion Calculator
Convert between different units of measurement with precision and ease
Unit Conversion
Select category and units for conversion
Unit Information
Millimeter (mm)
Metric unit, 1/1000 of a meter
Factor: 1.00e-3
Centimeter (cm)
Metric unit, 1/100 of a meter
Factor: 1.00e-2
Meter (m)
Base metric unit of length
Factor: Base unit
Kilometer (km)
Metric unit, 1000 meters
Factor: 1.00e+3
Inch (in)
Imperial unit, 1/12 of a foot
Factor: 2.54e-2
Foot (ft)
Imperial unit, 12 inches
Factor: 3.05e-1
Yard (yd)
Imperial unit, 3 feet
Factor: 9.14e-1
Mile (mi)
Imperial unit, 5280 feet
Factor: 1.61e+3
Nautical Mile (nmi)
Maritime and aviation unit
Factor: 1.85e+3
Light Year (ly)
Astronomical unit of distance
Factor: 9.46e+15
Common Conversions
Length:
- 1 inch = 2.54 cm
- 1 foot = 30.48 cm
- 1 mile = 1.609 km
- 1 meter = 3.281 feet
Weight:
- 1 pound = 0.454 kg
- 1 ounce = 28.35 grams
- 1 stone = 6.35 kg
Temperature:
- 0°C = 32°F = 273.15K
- 100°C = 212°F = 373.15K
Conversion Tips
Accuracy Note: All conversions use internationally accepted conversion factors and formulas for maximum precision.
Best Practices:
- Use appropriate precision for your application
- Consider measurement uncertainty in critical applications
- Temperature conversions use exact mathematical formulas
- Scientific notation is used for very large or small numbers
- History feature helps track recent conversions