Add or subtract lengths in customs (decimal or fraction), feet, centimeters, and millimeters. Enter equations just like you would certainly write that on paper, e.g. 4′ 3 7/8″ + 5 cm.

You are watching: What is half of 1 3 4 inches

See the outcomes in inches, feet, centimeters, and also millimeters – all outcomes are in imperial and also metric.


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How to include or Subtract Feet & Inches

Adding or subtracting lengths in feet and also inches could seem complicated, yet it’s actually really basic if you monitor a few simple steps. That even simpler to include or subtract length measurements utilizing a calculator like the one above, however follow this easy measures to learn exactly how to perform it yourself.


Step One: transform Feet and also Inches to Decimal

The first thing to do when adding, subtraction, or doing various other math through inches, feet, and also other dimensions is to transform all the measurements into a usual unit that measure.

Start through converting inch fractions right into decimal. Then convert feet, centimeters, and millimeters come inches.

Convert customs fractions to decimal by dividing the bottom half of the fraction by the bottom half on a calculator. If there is a entirety number, add it come the decimal worth after converting.

You can likewise use one inch portion calculator come quickly discover the decimal value for an inch fraction.


For example:3/8 = 3 ÷ 8 = .375 inches


Convert feet come inches by multiplying the number of feet by 12, due to the fact that there space 12 inches in a foot. Utilizing a feet to inches conversion calculator likewise simplifies this step.


For example:3 feet = 3 × 12 = 36 inches


Try our other length conversion calculators to transform other systems to decimal inches.

Step Two: include or Subtract the converted Values

With all measurements in an customs decimal form, add or subtract all dimensions as you usually would, utilizing a calculator as needed. The final an outcome will it is in the size in inches; friend can convert the an outcome to any other unit at this point.

To express the amount or difference value in feet, just multiply through 12.

The adhering to charts simplify the process of including and subtracting fractional inch worths together and also might be much faster than utilizing a calculator.

Inch portion Addition Chart

Table reflecting the sum of common inch fractions. Add a fraction from the optimal heading and an initial column; the amount is whereby they intersect.+ 1/8″+ 1/4″+ 3/8″+ 1/2″+ 5/8″+ 3/4″+ 7/8″+ 1″1/8″1/4″3/8″1/2″5/8″3/4″7/8″1″
1/4″3/8″1/2″5/8″3/4″7/8″1″1 1/8″
3/8″1/2″5/8″3/4″7/8″1″1 1/8″1 1/4″
1/2″5/8″3/4″7/8″1″1 1/8″1 1/4″1 3/8″
5/8″3/4″7/8″1″1 1/8″1 1/4″1 3/8″1 1/2″
3/4″7/8″1″1 1/8″1 1/4″1 3/8″1 1/2″1 5/8″
7/8″1″1 1/8″1 1/4″1 3/8″1 1/2″1 5/8″1 3/4″
1″1 1/8″1 1/4″1 3/8″1 1/2″1 5/8″1 3/4″1 7/8″
1 1/8″1 1/4″1 3/8″1 1/2″1 5/8″1 3/4″1 7/8″2″

Inch portion Subtraction Chart

Table showing the difference of typical inch fractions. Subtract a portion from the height heading native the an initial column; the difference is where they intersect.− 1/8″− 1/4″− 3/8″− 1/2″− 5/8″− 3/4″− 7/8″− 1″1/8″1/4″3/8″1/2″5/8″3/4″7/8″1″
0″-1/8″-1/4″-3/8″-1/2″-5/8″-3/4″-7/8″
1/8″0″-1/8″-1/4″-3/8″-1/2″-5/8″-3/4″
1/4″1/8″0″-1/8″-1/4″-3/8″-1/2″-5/8″
3/8″1/4″1/8″0″-1/8″-1/4″-3/8″-1/2″
1/2″3/8″1/4″1/8″0″-1/8″-1/4″-3/8″
5/8″1/2″3/8″1/4″1/8″0″-1/8″-1/4″
3/4″5/8″1/2″3/8″1/4″1/8″0″-1/8″
7/8″3/4″5/8″1/2″3/8″1/4″1/8″0″

We’ve extended the basics of adding length measurements, and we expect you’re emotion confident using the measures above. Learn much more about how to add feet and inches in our thorough guide.

How to main point or division Feet & Inches

The procedures to multiply or divide feet and also inches are similar to the steps for adding and subtracting above.

Step One: transform Feet and also Inches come Decimal

The first step in multiply or dividing is to convert the size measurements come a decimal value. If the size measurements are in feet and also inches, it can be most basic to transform to inches.

Step Two: multiply or Divide

With the size value convert to a decimal, the now feasible to main point or divide as with you would certainly with any decimal number. Because that example, if her inch value is 1.25 and also you need to multiply by 2, just multiply making use of 1.25 × 2 = 2.5.

The adhering to charts do multiplying or splitting fractional inch values much easier.

Inch portion Multiplication Chart

Table reflecting the multiplication of usual inch fractions. Main point the fraction in the first column by the top heading’s value; the an outcome is whereby they intersect.× 2× 3× 4× 5× 6× 7× 81/8″1/4″3/8″1/2″5/8″3/4″7/8″1″
1/4″3/8″1/2″5/8″3/4″7/8″1″
1/2″3/4″1″1 1/4″1 1/2″1 3/4″2″
3/4″1 1/8″1 1/2″1 7/8″2 1/4″2 5/8″3″
1″1 1/2″2″2 1/2″3″3 1/2″4″
1 1/4″1 7/8″2 1/2″3 1/8″3 3/4″4 3/8″5″
1 1/2″2 1/4″3″3 3/4″4 1/2″5 1/4″6″
1 3/4″2 5/8″3 1/2″4 3/8″5 1/4″6 1/8″7″
2″3″4″5″6″7″8″

Inch Fraction department Chart

Table reflecting the division of usual inch fractions. Division the fraction in the very first column through the height heading’s value; the an outcome is whereby they intersect.

See more: What Is 14 Divided By 2/3 ? What Is 14 Divided By 3 Using Long Division

÷ 2÷ 3÷ 4÷ 5÷ 6÷ 7÷ 81/4″1/2″3/4″1″
1/8″5/64″1/16″3/64″1/32″1/32″1/64″
1/4″11/64″1/8″7/64″5/64″1/16″1/16″
3/8″1/4″3/16″5/32″1/8″7/64″3/32″
1/2″21/64″1/4″13/64″11/64″9/64″1/8″

Inch portion and Decimal Equivalents


Sometimes a chart makes things easier: find typical inch fractions and equivalent decimal values using this one.