This is a list of cusomary units of measurements conversion for Length, Weight, and Capacity.
In my class, I use the Video Game term, "Cheat Code" to refer to these conversion numbers.
For example: If a problem deals with Inches & Feet, the Cheat Code is 12. If a problem deals with Quarts & Gallons, the Cheat Code is 4. You always multiply or divide by the Cheat Code to convert.
If you like this, check out my Customary Units of Measurement: Adding and Subtractin mini-unit, which uses this handout and terminology.