Unit Conversion Chart for Kids
Understanding units of measurement is an important math skill – and this easy-to-read unit conversion chart for kids makes learning simple and fun.
The chart includes common conversions for length, weight, volume, and temperature, plus easy formulas that show children how to do the math themselves. Whether at home or in the classroom, it’s a perfect reference for homework, projects, or practice.
Use this page to help kids convert inches to centimeters, pounds to kilograms, cups to milliliters, and Fahrenheit to Celsius – all in one convenient place.
📏 Length Conversions
How to convert length units:
To convert inches to centimeters, multiply by 2.54.
To convert millimeters to inches, divide by 25.4.
Remember: 10 millimeters = 1 centimeter, and 100 centimeters = 1 meter.
| Inches (in) | Millimeters (mm) | Centimeters (cm) |
|---|---|---|
| 1 in | 25.4 mm | 2.54 cm |
| 6 in | 152.4 mm | 15.24 cm |
| 12 in (1 ft) | 304.8 mm | 30.48 cm |
| 36 in (1 yd) | 914.4 mm | 91.44 cm |
| – | 10 mm | 1 cm |
| – | 1000 mm | 100 cm / 1 m |
⚖️ Weight Conversions
How to convert weight units:
To convert pounds to kilograms, multiply by 0.45.
To convert ounces to grams, multiply by 28.35.
There are 16 ounces in a pound.
| Pounds (lb) | Ounces (oz) | Kilograms (kg) |
|---|---|---|
| 1 lb | 16 oz | 0.45 kg |
| 2 lb | 32 oz | 0.91 kg |
| 5 lb | 80 oz | 2.27 kg |
| 10 lb | 160 oz | 4.54 kg |
| – | 1 oz | 0.028 kg |
🧪 Volume Conversions
How to convert volume units:
To convert cups to milliliters, multiply by 240.
To convert fluid ounces to milliliters, multiply by 29.57.
There are 8 fluid ounces in 1 cup.
| Cups | Fluid Ounces (fl oz) | Milliliters (ml) |
|---|---|---|
| 1 cup | 8 fl oz | 240 ml |
| ½ cup | 4 fl oz | 120 ml |
| ¼ cup | 2 fl oz | 60 ml |
| 1 tablespoon | 0.5 fl oz | 15 ml |
| 1 teaspoon | 0.17 fl oz | 5 ml |
🌡 Temperature Conversions
How to convert temperature units:
To convert Fahrenheit to Celsius, subtract 32, then multiply by 5⁄9.
To convert Celsius to Fahrenheit, multiply by 9⁄5, then add 32.
| Fahrenheit (°F) | Celsius (°C) |
|---|---|
| 32°F | 0°C |
| 98.6°F | 37°C |
| 100°F | 37.8°C |
| 212°F (boiling) | 100°C |
How to Use This Unit Conversion Chart for Kids
This measurement conversion chart for kids can be used as a quick reference for schoolwork, educational games, or classroom displays. Teachers and parents can print it out, use it during science and math lessons, or share it digitally on classroom websites.
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