Length
| Acronym | Full Form |
| ft | foot/feet |
| fm | fathom |
| in | inch/inches |
| mm | millimeter/millimeters |
| cm | centimeter/centimeters |
| m | meter/meters |
| km | kilometer/kilometers |
| yd | yard/yards |
| mi | mile/miles |
Area
| Acronym | Full Form |
| ac | acre |
| sq mi/mi² | square mile |
| sq yd/yd² | square yard |
| sq ft/ft² | square foot |
| sq in/in² | square inch |
| cm² | square centimeter |
| m² | square meter |
| km² | square kilometer |
Weight
| Acronym | Full Form |
| lb | pound/pounds |
| oz | ounce/ounces |
| mg | milligram/milligrams |
| g | gram/grams |
| kg | kilogram/kilograms |
| T | ton |
| st | stone |
Volume
| Acronym | Full Form |
| tsp or t | teaspoon/teaspoons |
| tbs, tbsp or T | tablespoon/tablespoons |
| c | cup/cups |
| qt | quart/quarts |
| ml | milliliter/milliliters |
| l | liter/liters |
| pt | pint/pints |
| gal | gallon/gallons |
Temperature
| Acronym | Full Form |
| F | degrees Fahrenheit |
| C | degrees centigrade/Celsius |
| cal | calorie (small calorie) |
| Cal | kilocalorie (large calorie) |
Speed
| Acronym | Full Form |
| mph | miles per hour |
| kph | kilometers per hour |
| kn | knots. |