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With over 3,500 calculators, Inch Calculator is one of the largest and most trusted sites for calculations in math & science education, construction planning, electrical engineering, health & fitness, finance, automotive, and several other fields.
Several government agencies and leading publications also trust our work and feature our tools!
Feet and Inches Calculator
Add and subtract inches (as a decimal or fraction), feet, centimeters, and millimeters. For example, enter a value such as 6' 8 5/16" + 12 cm using our feet and inches length measurement calculator. Get results in inches, feet, centimeters, and millimeters.
Feet and Inches Result
Imperial Units
Metric Units
About Inch Calculator
We create accurate, easy-to-use calculators and tools, paired with clear, informative content, to help finance professionals, students, engineers, fitness enthusiasts, contractors, homeowners, and others solve real-world problems.
We design each tool to deliver the right amount of information, whether you want a quick answer or to understand the calculations behind it.
We believe accuracy and transparency go hand in hand. You can see the formulas, methods, and assumptions behind our calculators to understand how we calculate the results.
Our team draws on practical experience, research, and technical knowledge, working with industry professionals and subject-matter experts when appropriate. Learn more about Inch Calculator and meet the people dedicated to getting you the correct answer every time.