Unit ConvertersUniversal
Universal Unit Conversion Calculator
Convert between metric, imperial, US customary, and scientific units across 10+ categories with instant two-way synchronization and full unit reference tables.
Length & Distance Conversion
Converted Output
10 cm
100 Millimeters = 10 Centimeters
All Equivalent Units:
Millimeter (mm):100
Centimeter (cm):10
Meter (m):0.1
Kilometer (km):0.0001
Inch (in):3.937008
Foot (ft):0.328084
Yard (yd):0.109361
Mile (mi):0.000062
Nautical Mile (NM):0.000054
Mathematical Formula: Linear & Affine Unit Transformations
Target Value = (Input Value × Ratio_From) / Ratio_To
Standard dimensional analysis unit normalization across SI and imperial systems.
How to Use This Calculator
- 1Select your measurement category (Length, Weight, Temperature, Area, Volume, Speed, Data, Pressure, Energy).
- 2Select the unit you are converting from and the unit you are converting to.
- 3Enter the numeric value.
- 4Instantly view the converted result and the complete conversion table for all other units in that category.
Practical Example: Kilometers to Miles & Feet
Scenario: Converting 5 Kilometers to Miles.
Category:Length
From:Kilometer (km)
To:Mile (mi)
Value:5
Result: 5 km = 3.106856 miles (16,404.2 feet | 5,000 meters)
5 × 1,000 m ÷ 1609.344 m/mile = 3.106856 miles.
Frequently Asked Questions
Multiply the Celsius temperature by 9/5 (or 1.8) and add 32. Example: 20°C × 1.8 + 32 = 68°F.
Pro Calculation Tips
- Bookmark this tool for quick access to on-the-fly kitchen cooking conversions, travel metrics, and physics formulas.
Model Assumptions
- Temperature requires affine offset conversions (°F = °C × 9/5 + 32).