Unit Conversion Cheat Sheet
A printable reference for common unit conversions: length, weight, volume, temperature, area, and speed. All the conversion factors you need on one page.
Unit Conversion Cheat Sheet
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Length
US Customary
1 foot (ft) = 12 inches (in)
1 yard (yd) = 3 feet = 36 inches
1 mile (mi) = 5,280 feet = 1,760 yards
Metric
1 centimeter (cm) = 10 millimeters (mm)
1 meter (m) = 100 cm = 1,000 mm
1 kilometer (km) = 1,000 meters
US to Metric
1 inch = 2.54 cm
1 foot = 30.48 cm = 0.3048 m
1 yard = 0.9144 m
1 mile = 1.609 km
1 km = 0.6214 miles
Weight / Mass
US Customary
1 pound (lb) = 16 ounces (oz)
1 ton = 2,000 pounds
Metric
1 gram (g) = 1,000 milligrams (mg)
1 kilogram (kg) = 1,000 grams
1 metric ton = 1,000 kg
US to Metric
1 ounce = 28.35 grams
1 pound = 453.6 grams = 0.4536 kg
1 kg = 2.205 pounds
1 stone = 14 pounds = 6.35 kg
Volume
US Customary
1 tablespoon (tbsp) = 3 teaspoons (tsp)
1 fluid ounce (fl oz) = 2 tablespoons
1 cup = 8 fluid ounces
1 pint (pt) = 2 cups = 16 fl oz
1 quart (qt) = 2 pints = 4 cups
1 gallon (gal) = 4 quarts = 16 cups
Metric
1 liter (L) = 1,000 milliliters (mL)
US to Metric
1 teaspoon = 4.929 mL
1 tablespoon = 14.79 mL
1 cup = 236.6 mL
1 gallon = 3.785 liters
1 liter = 0.2642 gallons
Temperature
Formulas
°F to °C: C = (F - 32) × 5/9
°C to °F: F = (C × 9/5) + 32
°C to K: K = C + 273.15
Key Reference Points
Water freezes: 32°F = 0°C
Water boils: 212°F = 100°C
Body temp: 98.6°F = 37°C
Room temp: 68°F = 20°C
Quick Reference
0°C = 32°F
10°C = 50°F
20°C = 68°F
30°C = 86°F
40°C = 104°F
Area
US Customary
1 square foot (ft²) = 144 square inches (in²)
1 square yard (yd²) = 9 square feet
1 acre = 43,560 square feet
1 square mile = 640 acres
Metric
1 square meter (m²) = 10,000 cm²
1 hectare = 10,000 m²
1 square km = 100 hectares
US to Metric
1 ft² = 0.0929 m²
1 acre = 4,047 m² = 0.4047 hectares
1 sq mile = 2.59 km²
Speed
Conversions
1 mph = 1.609 km/h
1 km/h = 0.6214 mph
1 knot = 1.151 mph = 1.852 km/h
1 m/s = 3.6 km/h = 2.237 mph
Quick Reference
30 mph = 48.3 km/h
60 mph = 96.6 km/h
100 km/h = 62.1 mph
120 km/h = 74.6 mph
Tip
mph × 1.6 ≈ km/h
km/h × 0.6 ≈ mph
Related Templates
FAQ
How do I convert Fahrenheit to Celsius?
Use the formula: C = (F - 32) x 5/9. For example, 72F = (72-32) x 5/9 = 22.2C. To convert Celsius to Fahrenheit: F = (C x 9/5) + 32.
What is the difference between US and metric units?
The US customary system uses inches, feet, pounds, and gallons, while the metric system uses meters, grams, and liters. The metric system is based on powers of 10, making conversions simpler within the system.
How many cups are in a gallon?
There are 16 cups in a gallon. The progression is: 2 cups = 1 pint, 2 pints = 1 quart, 4 quarts = 1 gallon. So 4 x 2 x 2 = 16 cups per gallon.