How to convert units

Most unit conversions are linear. Pick a category base unit (meters for length, kilograms for mass, liters for volume), convert your value into that base, then convert out to the target unit.

The factor method

1. Look up how many base units equal one of your starting units.
2. Multiply your value by that factor to get the base amount.
3. Divide by the target unit's factor to finish the conversion.

Example: 10 centimeters → meters → inches. 10 × 0.01 = 0.1 m, then 0.1 / 0.0254 ≈ 3.937 inches. UnitNest does this for you with factorToBase values in a shared registry.

Temperature is special

Celsius, Fahrenheit, and Kelvin are related by affine transforms (a scale and an offset), not a single multiply. Formulas:

• °F = (°C × 9/5) + 32
• °C = (°F − 32) × 5/9
• K = °C + 273.15

Digital storage prefixes

UnitNest uses binary (1024-based) prefixes for KB/MB/GB/TB — common in operating systems and developer tooling. Marketing "decimal GB" (1000³) can differ slightly; check your context.

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• Centimeter → Inch
• Inch → Centimeter
• Kilogram → Pound
• Pound → Kilogram
• Celsius → Fahrenheit
• Fahrenheit → Celsius
• Foot → Meter
• Meter → Foot