Feet and Inches Calculator

  • Enter the feet and inches values for both Input 1 and Input 2.
  • Select the desired operation from the dropdown.
  • Click "Calculate" to perform the calculation.
  • The result will be displayed, along with a detailed explanation and formula used.
  • Your calculation history will be listed below.
  • Click "Clear Results" to clear the inputs and results.
  • Click "Copy Results" to copy the result to the clipboard.
Calculation History

    What are Feet and Inches?

    Feet and inches are units of length or distance commonly used in some countries, including the United States and a few others. They are part of the imperial system of units. Here’s a breakdown of feet and inches:

    1. Foot (ft):
      • The foot is a unit of length equal to 12 inches or one-third of a yard. It is commonly used to measure height, length, or distance, especially for everyday purposes in countries that use the imperial system.
    2. Inch (in):
      • The inch is a smaller unit of length, and there are 12 inches in one foot. An inch is further divided into smaller units, such as fractions of an inch, for more precise measurements.

    All Formulae Related to Feet and Inches

    Feet and inches are units of length commonly used in the imperial system. There are several formulas related to feet and inches for conversions and calculations. Here are some of the key formulae:

    1. Feet to Inches Conversion:
      • To convert feet to inches, you can use the following formula: Inches = Feet × 12 Where:
        • Inches is the length in inches.
        • Feet is the length in feet.
    2. Inches to Feet Conversion:
      • To convert inches to feet, you can use the following formula: Feet = Inches / 12 Where:
        • Feet is the length in feet.
        • Inches is the length in inches.
    3. Combined Measurement:
      • To express a length using feet and inches, you can use a formula to convert the total length to inches and then divide by 12 to separate it into feet and inches. For example: Total Inches = Feet × 12 + Inches To extract the feet and inches separately: Feet = Total Inches / 12 Inches = Total Inches % 12 Where:
        • Total Inches is the length in inches.
        • Feet is the length in feet.
        • Inches is the length in inches.
        • % represents the modulo operation, which gives the remainder after division.
    4. Addition and Subtraction of Feet and Inches:
      • When adding or subtracting measurements in feet and inches, you can use the following formulae to handle the conversion: Total Inches = (Feet1 × 12 + Inches1) + (Feet2 × 12 + Inches2) To extract the feet and inches separately from the total: Feet = Total Inches / 12 Inches = Total Inches % 12
    5. Multiplication and Division by a Constant:
      • To multiply a length in feet and inches by a constant, you can treat the combination as inches, perform the multiplication, and then convert the result back to feet and inches. For division, you follow a similar approach: Total Inches = (Feet × 12 + Inches) Result in Feet and Inches = (Total Inches × Constant) / 12 Where:
        • Total Inches is the length in inches.
        • Feet is the length in feet.
        • Inches is the length in inches.
        • Constant is the constant factor for multiplication or division.

    Applications of Feet and Inches Calculator in Various Fields

    A Feet and Inches Calculator, which helps with measurements and conversions in the imperial system, finds applications in various fields and industries, especially in countries that use this system of units. Here are some of the key applications of a Feet and Inches Calculator in different fields:

    1. Construction and Carpentry:
      • Contractors and carpenters frequently use feet and inches measurements for building structures, cutting materials, and ensuring precise dimensions.
    2. Architecture and Design:
      • Architects and designers use feet and inches to create blueprints, floor plans, and design specifications for buildings and interior spaces.
    3. Real Estate:
      • Real estate professionals use these measurements to describe property dimensions, room sizes, and land area to clients and buyers.
    4. Home Improvement:
      • Homeowners and DIY enthusiasts rely on feet and inches measurements when renovating or decorating their homes.
    5. Surveying and Land Management:
      • Land surveyors use these measurements to assess land boundaries, property lines, and topographical features.

    Benefits of Using the Feet and Inches Calculator

    Using a Feet and Inches Calculator offers several benefits, especially in fields and regions where the imperial system of measurement, including feet and inches, is commonly used. Here are the key advantages of using such a calculator:

    1. Precision: The calculator provides precise measurements and conversions in the feet and inches format, reducing the risk of errors associated with manual calculations.
    2. Efficiency: It saves time and effort, as calculations and conversions are automated, eliminating the need for complex mental math or manual conversions.
    3. Versatility: The calculator can handle various mathematical operations involving feet and inches, making it a versatile tool for different applications.
    4. Consistency: It ensures consistent use of imperial units, preventing measurement discrepancies and maintaining uniformity across projects and industries.
    5. Ease of Use: Feet and Inches Calculators are user-friendly and accessible, requiring minimal technical knowledge to operate effectively.


    1. “Beyond Shoe Sizes: Feet and Inches in Human Locomotion and Biomechanics” by Journal of Biomechanics
    2. “From Architectural Design to Surveying: Feet and Inches in Spatial Measurement and Historical Context” by Transactions of the American Society of Civil Engineers

    Last Updated : 27 February, 2024

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    21 thoughts on “Feet and Inches Calculator”

    1. While the article is thorough in explaining the concepts related to feet and inches, it might be challenging for those who are unfamiliar with the imperial system to grasp the information completely.

    2. This is an incredibly informative article that provides a detailed breakdown of feet and inches, as well as formulae for conversions and applications in various fields. It’s an excellent resource for anyone working with measurements in the imperial system.

    3. The article provides a comprehensive understanding of feet and inches, making it easy for individuals to handle measurements and calculations effectively. A great read!

    4. The inclusion of formulae and mathematical operations related to feet and inches is beneficial for those in technical fields, but it might be too detailed for general readers who simply seek an understanding of these units.

    5. I understand your perspective, Molly. Perhaps a section summarizing the key points for non-technical readers would enhance the article’s accessibility.

    6. Absolutely, the benefits of using Feet and Inches calculators are clearly outlined, highlighting the value of this tool in different industries and contexts.

    7. The benefits of using Feet and Inches Calculator are well-articulated, highlighting its significance in improving measurement accuracy and efficiency in different professional settings.

    8. The detailed coverage of feet and inches, along with the practical examples in fields like construction and architecture, makes the article a valuable reference for professionals in these industries.

    9. I agree with Riley87’s suggestion. A simplified summary at the end could cater to audiences with different levels of technical knowledge.

    10. The article effectively communicates the benefits and versatility of the Feet and Inches Calculator, underscoring its role in promoting consistency and accuracy within the imperial measurement system.

    11. I can see how individuals accustomed to the metric system might find it overwhelming. Perhaps additional context about the imperial system itself would be beneficial.

    12. Absolutely, Tjones. The calculator certainly serves as a valuable tool in maintaining uniformity and precision across diverse applications.

    13. The applications of Feet and Inches Calculator in various fields are insightful, emphasizing the practical utility of these units in real-world scenarios.

    14. I couldn’t have said it better, Estewart. The real-world applications bring relevance to the article’s content.

    15. Although the article details the use of Feet and Inches Calculator, it may benefit from addressing potential limitations or considerations when using this tool in specific contexts.

    16. Your point about addressing limitations is valid, Courtney67. Discussion of potential constraints associated with the calculator would provide a well-rounded view of its utility.

    17. I couldn’t agree more! The explanation of formulae and applications is extremely helpful for practical use.

    18. You raise a good point. A brief overview of the imperial system could make this article more accessible to a wider audience.

    19. I second Daisy Campbell’s suggestion. Exploring the practical constraints in different fields can add depth to the article’s coverage.

    20. The article’s focus on formulae and mathematical operations related to feet and inches establishes its suitability for individuals seeking in-depth knowledge and technical insights in this domain.

    21. You’re right, Darren Morris. The technical depth of the article caters to the needs of professionals who require precise calculations and conversions related to feet and inches.

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