• Metric prefixes
• Yotta = 10²⁴ Symbol: Y
• Zetta = 10²¹ Symbol: Z
• Exa = 10¹⁸ Symbol: E
• Peta = 10¹⁵ Symbol: P
• Tera = 10¹² Symbol: T
• Giga = 10⁹ Symbol: G
• Mega = 10⁶ Symbol: M
• Kilo = 10³ Symbol: k
• Hecto = 10² Symbol: h
• Deca = 10¹ Symbol: da
• Deci = 10^-1 Symbol: d
• Centi = 10^-2 Symbol: c
• Milli = 10^-3 Symbol: m
• Micro = 10^-6 Symbol: ?
• Nano = 10^-9 Symbol: n
• Pico = 10^-12 Symbol: p
• Femto = 10^-15 Symbol: f
• Atto = 10^-18 Symbol: a
• Zepto = 10^-21 Symbol: z
• Yocto = 10^-24 Symbol: y

• Conversion factors for temperature
• ^oF = (^oC)(9/5) + 32
• ^oC = (^oF - 32)(5/9)
• ^oR = ^oF + 459.67
• ^oK = ^oC + 273.15

Conversion equivalencies for volume

1 gallon (gal) = 231.0 cubic inches (in³) = 4 quarts (qt) = 8 pints (pt) = 128 fluid ounces (fl. oz.) = 3.7854 liters (l)

Conversion equivalencies for distance

1 inch (in) = 2.540000 centimeter (cm)

Conversion equivalencies for velocity

1 mile per hour (mi/h) = 88 feet per minute (ft/m) = 1.46667 feet per second (ft/s) = 1.60934 kilometer per hour (km/h) = 0.44704 meter per second (m/s) = 0.868976 knot (knot -- international)

Conversion equivalencies for weight

1 pound (lb) = 16 ounces (oz) = 0.45359 kilogram (kg)

Conversion equivalencies for force

1 pound-force (lbf) = 4.44822 newton (N)

Acceleration of gravity (free fall), Earth standard

9.806650 meters per second per second (m/s²) = 32.1740 feet per second per second (ft/s²)

Conversion equivalencies for area

1 acre = 43560 square feet (ft²) = 4840 square yards (yd²) = 4046.86 square meters (m²)

Conversion equivalencies for pressure

1 pound per square inch (psi) = 2.03603 inches of mercury (in. Hg) = 27.6807 inches of water (in. W.C.) = 6894.757 pascals (Pa) = 0.0680460 atmospheres (Atm) = 0.0689476 bar (bar)

Conversion equivalencies for energy or work

1 british thermal unit (BTU -- "International Table") = 251.996 calories (cal -- "International Table") = 1055.06 joules (J) = 1055.06 watt-seconds (W-s) = 0.293071 watt-hour (W-hr) = 1.05506 x 10¹⁰ ergs (erg) = 778.169 foot-pound-force (ft-lbf)

Conversion equivalencies for power

1 horsepower (hp -- 550 ft-lbf/s) = 745.7 watts (W) = 2544.43 british thermal units per hour (BTU/hr) = 0.0760181 boiler horsepower (hp -- boiler)