Unit Converter Guide: Master Metric and Imperial Systems
Unit conversion is the invisible infrastructure supporting science, engineering, commerce, cooking, and manufacturing.
The Metric System
The International System of Units (SI) uses base-10 prefixes: kilo (10³), centi (10⁻²), milli (10⁻³), micro (10⁻⁶), nano (10⁻⁹).
Critical Conversion Factors
- Length: 1 inch = 2.54 cm (exact)
- Weight: 1 pound = 453.592 grams
- Temperature: °F = (°C × 9/5) + 32
Catastrophic Failures
- NASA Mars Climate Orbiter (1999): $327.6 million lost due to metric/imperial mismatch
- Air Canada Flight 143 (1983): Ran out of fuel due to pounds vs kilograms error
Critical Warning: In medicine and engineering, always double-check units. Use dimensional analysis to catch conversion errors.