Feet and Inches Calculator

What is the Feet and Inches Calculator?

The Feet and Inches Calculator is a free online tool that lets you add, subtract, multiply, divide, and convert measurements in feet and inches. Whether you are working on a construction project, planning a renovation, or need precise measurements for woodworking, this calculator handles whole numbers, fractions, mixed numbers, and decimals with ease. For metric conversions, use the Cm to Feet and Inches Converter or the Length Converter.

How to Use the Feet and Inches Calculator

Using this calculator is simple. Start by entering the first measurement in the "Value 1" section. You can enter feet and inches using whole numbers, fractions (like 1/2), mixed numbers (like 5 1/2), or decimals (like 5.5). Next, choose the operation you want to perform: add, subtract, multiply, divide, multiply/divide by a factor, or simply convert the measurement to a different format.

If you choose add, subtract, multiply, or divide, enter the second measurement in the "Value 2" section. For multiply by factor or divide by factor, enter the numeric factor. Select your desired rounding precision from 1 inch down to 1/64 of an inch. The results update instantly and display the answer in four formats: feet and inches, decimal feet, total inches as a fraction, and total inches as a decimal.

Common Feet and Inches Conversions

Here are some frequently used conversions between feet and inches:

• 1 foot = 12 inches
• 3 feet = 1 yard
• 5,280 feet = 1 mile
• To convert feet to inches: multiply the feet by 12
• To convert inches to feet: divide the inches by 12
• For all unit conversions, try the Unit Converter

Tips for Accurate Measurements

When working with feet and inches, always double-check your fractions and decimals. A common mistake is confusing 1/2 inch with 0.5 inch (they are the same) or mixing up 1/4 inch with 0.25 inch. Use the rounding feature to match your tape measure's precision — most tape measures show down to 1/16 or 1/32 of an inch.