Free Printable Measurement Conversion Charts (Customary, Metric and Combined)

About these measurement conversions handouts

A conversion chart saves students from remembering how many feet are in a mile or milliliters in a liter. These three sheets put the facts used in elementary and middle school measurement lessons in one place, grouped by what you are measuring.

The customary chart covers length, liquid volume and weight, from 12 inches in a foot to 2,000 pounds in a ton, and includes a handy line for the gallon: 4 quarts, 8 pints, 16 cups or 128 fluid ounces. The metric chart covers length, volume and mass and adds a prefix ladder that shows each step as a factor of 10.

The combined chart connects the two systems. The inch is defined as exactly 2.54 centimeters, and the foot, yard and mile follow from it, as does the pound at exactly 0.45359237 kilogram. Values for ounces, cups, quarts and gallons come from those definitions and are rounded where marked. A short temperature strip shows common Celsius and Fahrenheit points.

Every value on the charts was computed with exact fraction arithmetic from the definitions and checked against NIST publications before publishing.

How to use them

1. Choose customary, metric or combined.
2. Edit the title and add a student name and date.
3. Print and keep it in a math folder or science notebook.
4. Do one conversion together, such as 3 feet 4 inches in inches.

Classroom tips

• Have students estimate first: about how many centimeters is a pencil?
• Practice the prefix ladder by moving the decimal point one place for each step.
• Use a gallon-sized container and smaller ones to show 4 quarts in a gallon.
• Ask students to find three measurements around the room and convert each.

Where the facts come from

• NIST: SP 1038 / Handbook 44 Appendix C: inch = 2.54 cm, foot, yard, mile, pound = 0.45359237 kg defined exactly
• NIST: SP 811 Appendix B.8: conversion factors for inch, foot, mile, pound, ounce, gallon, quart, pint, cup, fluid ounce
• NIST: Rounded customary-to-metric equivalents

Last reviewed 2026-10-03. Handout Hero designs are original and made for this site. They are general reference material; check your own school, district or tradition where it matters.