English & Metric Units, SI Prefixes, and Temperature Conversions

Vocabulary flashcards covering English system units, SI prefixes, key conversions, and temperature scales.

Inch

English length unit; 12 inches = 1 foot; 1 inch = 2.54 cm.

Foot

English length unit; 1 foot = 12 inches; 1 foot ≈ 0.3048 m.

Yard

English length unit; 1 yard = 3 feet (36 inches); 1 yard ≈ 0.9144 m.

Mile

English length unit; 1 mile = 1 760 yards; 1 mile ≈ 1.6 km.

Ounce

English weight unit; 16 ounces = 1 pound; 1 ounce ≈ 28.35 g.

Pound

English weight unit; 1 pound = 16 ounces; 1 lb ≈ 0.45 kg.

Ton

English weight unit; 1 ton = 2 000 pounds.

Cup

English volume unit; 2 cups = 1 pint.

Pint

English volume unit; 1 pint = 2 cups; 8 pints = 1 gallon.

Gallon

English volume unit; 1 gallon = 8 pints.

Pail

English volume unit; 1 pail = 76.86 gallons.

Giga (G)

SI prefix meaning one billion (10⁹).

Mega (M)

SI prefix meaning one million (10⁶).

Kilo (k)

SI prefix meaning one thousand (10³).

Deci (d)

SI prefix meaning one tenth (10⁻¹).

Centi (c)

SI prefix meaning one hundredth (10⁻²).

Milli (m)

SI prefix meaning one thousandth (10⁻³).

Micro (µ)

SI prefix meaning one millionth (10⁻⁶).

Nano (n)

SI prefix meaning one billionth (10⁻⁹).

Pico (p)

SI prefix meaning one trillionth (10⁻¹²).

Candela (cd)

SI base unit for luminous intensity.

Kelvin (K)

SI base unit for temperature; 0 K = −273 °C.

Celsius (°C)

Metric temperature scale; water freezes at 0 °C.

Fahrenheit (°F)

Imperial temperature scale; water freezes at 32 °F.

Rankine (°R)

Absolute temperature scale used in engineering; 0 °R = 0 K; degrees equal Fahrenheit increments.

Celsius to Fahrenheit

°F = (°C × 1.8) + 32.

Fahrenheit to Celsius

°C = (°F − 32) ÷ 1.8.

Celsius to Kelvin

K = °C + 273.

Kelvin to Celsius

°C = K − 273.

Kelvin to Rankine

°R = K × 1.8.

Rankine to Kelvin

K = °R ÷ 1.8.

Foot to Meter

1 foot = 0.3048 m; 1 m ≈ 3.28 ft.

Inch to Centimeter

1 inch = 2.54 cm.

Yard to Meter

1 yard = 0.9144 m; 1 m ≈ 1.0936 yd.

Mile to Kilometer

1 mile ≈ 1.6 km; 1 km ≈ 0.6215 mile.