Use this calculator to easily multiply a number consisting of feet, inches, and a carpenter fraction by a factor that could be a decimal value. Multiplying a value represented by feet, inches and carpenter fractions involves reducing everything down to decimal inches. They are much easier too handle. In other words, 10′ 5 1/2″ would […]

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# Calculator

## Divide Feet Inches and Fractions Calculator

Divide a number consisting of feet, inches, and carpenter fractions with this free and simple on-line calculator. Use the number boxes below to select how feet, inches, and the fraction for the dividend. Then use the divisor number box to select the divisor (this an be a decimal value). The quotient will be automatically generated […]

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## Angle Calculator | Slope to Degrees

Use this simple tool to accurately calculate how many degrees are in any roof pitch, stair stringer, or any other slope standard or metric. Enter the values for the roof pitch in inches per foot rise. Then select a fraction if there is any. For example: A 12/12 roof pitch would be selected as 12 […]

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## Roof pitch calculator | Known rise and run

Roof Pitch Calculator Calculate roof pitches with this free and simple online tool. Enter the rise and run for the pitch, length, and angle of the rafter. A roof pitch that is based on a fixed rise and run and does not end up with a whole number is known as a bastard pitch. This […]

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## Lean to Shed Rafter Calculator (into a wall)

Calculate the length of lean to shed roof rafters for any common roof pitch when the top of the rafters stop into a wall. It includes the rise and works in feet and inches or metric values. How to Calculate a Lean to Rafter The run for a lean to shed rafter ending into a […]

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## Calculator for Subtracting Feet Inches & Fractions

Calculator for subtracting feet, inches, and carpenter fractions from each other. This free and easy tool is fast and has automatic results. Subtraction Calculator in Feet, Inches, and Carpenter Fractions In the field “Value 1” select the number box below the label “Feet” if the number is large enough to have feet involved. Next, do […]

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## Add Numbers in Feet, Inches, & Carpenter Fractions

Calculate the sum of multiple values in feet, inches, and carpenter fractions. This calculator automatically fires so there is no need to click an “equals” button. Finding the Sum with Carpenter Fractions Enter a value for feet in the number box below feet within each values section. If there is no value, then do nothing. […]

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## Ramp Calculator and 2012 IRC Building Codes

This ramp calculator is ideally suited for planning and building a wheelchair accessible handicap ramp. It includes 2012 IRC building code requirements. 2012 IRC for Ramps These building codes are based on section R311.8.1 on page 61 of the 2012 International Residential Code. Ramps must have a maximum slope of one inch per foot. There is an […]

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## Cost to Shingle a Roof Calculator

Estimate how much it will cost to roof for your house using this safe DIY tool without having to climb on the roof. Works with a new roof, re-roof, shingles, or metal. Instructions for the Shingle Calculator Enter the approximate value for how many square feet the house has in the first number box. Select […]

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## Plywood calculator | How many 4×8 sheets?

How many 4′ x 8′ sheets of plywood do I need? This calculator does not simply divide the total square footage by 32. It figures how many pieces long, then how many wide. Use the drop downs below to select a length in feet. Then do the same thing for the width. For more complicated […]

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