Feet and Inch Calculator

Free feet and inches calculator for construction, woodworking, and DIY. Add, subtract, multiply, and divide length measurements in feet, inches, and fractions. Get instant decimal feet and metric conversions.

First Value

ftin

Second Value

ftin

Result

9 ft 3 in

= 9.25 ft

Total Inches

111

Meters

2.8194

Centimeters

281.94

Feet and Inches Calculator for Construction

Working with feet, inches, and fractions is essential for construction, woodworking, and home improvement projects. This calculator simplifies the process by handling all the conversions automatically. Whether you are adding board lengths, subtracting for gaps, or computing total material needs, this tool saves time and prevents costly measurement errors.

Common Uses

  • Framing: Add stud lengths, subtract for openings
  • Flooring: Add room dimensions for materials
  • Trim & Molding: Calculate total linear footage needed
  • Cabinetry: Fit measurements for custom installs
  • Fencing: Sum up total fence length in mixed units

Conversion Reference

FeetInchesDecimal FeetMeters
1'12"1.00.305
2'24"2.00.610
5'6"66"5.51.676
10'120"10.03.048

Frequently Asked Questions

How do I add feet and inches?
To add measurements in feet and inches: convert each measurement to total inches, add them together, then convert back. For example, 5'6" + 3'9" = 66" + 45" = 111" = 9'3". This calculator handles all the conversion automatically.
How many inches are in a foot?
One foot equals exactly 12 inches. This standard measurement is part of the US customary system. To convert feet to inches, multiply by 12. To convert inches to feet, divide by 12.
How do I convert feet and inches to decimal feet?
To convert to decimal feet: divide the inches by 12 and add to the feet. For example, 5'6" = 5 + 6/12 = 5.5 feet. 3'9" = 3 + 9/12 = 3.75 feet. This is useful for area calculations and architectural plans.

Related Tools