Appendix A Unit Conversions
| Units of Length in the US/Imperial System |
Units of Length in the Metric System |
System to System Length Conversions |
| \(1\) foot (ft) \({}=12\) inches (in) |
\(1\) meter (m) \({}=1000\) millimeters (mm) |
\(1\) inch (in) \({}=2.54\) centimeters (cm) |
| \(1\) yard (yd) \({}=3\) feet (ft) |
\(1\) meter (m) \({}=100\) centimeters (cm) |
\(1\) meter (m) \({}\approx3.281\) feet (ft) |
| \(1\) yard (yd) \({}=36\) inches (in) |
\(1\) meter (m) \({}=10\) decimeters (dm) |
\(1\) meter (m) \({}\approx1.094\) yard (yd) |
| \(1\) mile (mi) \({}=5280\) feet (ft) |
\(1\) dekameter (dam) \({}=10\) meters (m) |
\(1\) mile (mi) \({}\approx1.609\) kilometer (km) |
| \(1\) hectometer (hm) \({}=100\) meters (m) |
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| \(1\) kilometer (km) \({}=1000\) meters (m) |
| Units of Area in the US/Imperial System |
Units of Area in the Metric System |
System to System Area Conversions |
| \(1\) acre \({}=43560\) square feet (ft2) |
\(1\) hectare (ha) \({}=10000\) square meters (m2) |
\(1\) hectare (ha) \({}\approx2.471\) acres |
| \(640\) acres \({}=1\) square mile (mi2) |
\(100\) hectares (ha) \({}=1\) square kilometer (km2) |
| Units of Volume in the US/Imperial System |
Units of Volume in the Metric System |
System to System Volume Conversions |
| \(1\) tablespoon (tbsp) \({}=3\) teaspoon (tsp) |
\(1\) cubic centimeter (cc) \({}=1\) cubic centimeter (cm3) |
\(1\) cubic inch (in3) \({}\approx16.39\) milliliters (mL) |
| \(1\) fluid ounce (fl oz) \({}=2\) tablespoons (tbsp) |
\(1\) milliliter (mL) \({}=1\) cubic centimeter (cm3) |
\(1\) fluid ounce (fl oz) \({}\approx29.57\) milliliters (mL) |
| \(1\) cup (c) \({}=8\) fluid ounces (fl oz) |
\(1\) liter (L) \({}=1000\) milliliters (mL) |
\(1\) liter (L) \({}\approx1.057\) quarts (qt) |
| \(1\) pint (pt) \({}=2\) cups (c) |
\(1\) liter (L) \({}=1000\) cubic centimeters (cm3) |
\(1\) gallon (gal) \({}\approx3.785\) liters (L) |
| \(1\) quart (qt) \({}=2\) pints (pt) |
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| \(1\) gallon (gal) \({}=4\) quarts (qt) |
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| \(1\) gallon (gal) \({}=231\) cubic inches (in3) |
| Units of Mass/Weight in the US/Imperial System |
Units of Mass/Weight in the Metric System |
System to System Mass/Weight Conversions |
| \(1\) pound (lb) \({}=16\) ounces (oz) |
\(1\) gram (g) \({}=1000\) milligrams (mg) |
\(1\) ounce (oz) \({}\approx28.35\) grams (g) |
| \(1\) ton (T) \({}=2000\) pounds (lb) |
\(1\) kilogram (kg) \({}=1000\) grams (g) |
\(1\) kilogram (kg) \({}\approx2.205\) pounds (lb) |
| \(1\) metric ton (t) \({}=1000\) kilograms (kg) |
| Precise Units of Time |
Imprecise Units of Time |
Units of Time in the Metric System |
| \(1\) week (wk) \({}=7\) days (d) |
\(1\) year (yr) \({}\approx12\) months (mo) |
\(1\) second (s) \({}=1000\) milliseconds (ms) |
| \(1\) day (d) \({}=24\) hours (h) |
\(1\) year (yr) \({}\approx52\) weeks (wk) |
\(1\) second (s) \({}=10^6\) microseconds (µs) |
| \(1\) hour (h) \({}=60\) minutes (min) |
\(1\) year (yr) \({}\approx365\) days (d) |
\(1\) second (s) \({}=10^9\) nanoseconds (ns) |
| \(1\) minute (min) \({}=60\) seconds (s) |
\(1\) month (mo) \({}\approx30\) days (d) |
| \(1\) byte (B) \({}=8\) bits (b) |
\(1\) kilobit (kb) \({}=1024\) bits (b) |
| \(1\) kilobyte (kB) \({}=1024\) bytes (B) |
\(1\) megabit (Mb) \({}=1024\) kilobits (kb) |
| \(1\) megabyte (MB) \({}=1024\) kilobytes (kB) |
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| \(1\) gigabyte (GB) \({}=1024\) megabytes (MB) |
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| \(1\) terabyte (TB) \({}=1024\) gigabytes (GB) |
