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Siding and Paneling Square Foot Calculator

Easily Calculate Square Footage

Use our square foot calculator to quickly figure out how to calculate siding and determine how much siding you need for your project. This easy-to-use square feet calculator helps you get accurate measurements by entering the length and height of each wall, making material estimates simple and precise. Whether you’re working with reclaimed wood paneling or siding, knowing how to calculate how much siding you need is essential for planning and budgeting. Our square foot calculator eliminates guesswork, giving you the confidence to order the right amount of material while reducing waste. From small accent walls to full exterior siding projects, this tool ensures you’re prepared with accurate square footage for a smooth and efficient installation.

If you are looking for a way to convert square feet to linear feet, please use our calculators here:
Square Feet to Linear Feet Calculator
Linear Feet to Square Feet Calculator

Width/Height Length 
FeetInches FeetInches 
+ Add Row Calculate
room diagram showing you how to use the squaree feet calculator
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Understanding Square Feet vs. Linear Feet

Many people confuse square feet with linear feet when ordering reclaimed wood. Square footage measures the total surface area covered, while linear footage accounts for the length of boards needed based on their width. For example, if you're using 5-inch-wide boards to cover 100 square feet, you’ll need more linear feet than if you use 8-inch-wide boards. The calculator simplifies this conversion by factoring in your chosen board widths.
tools for measuring wood

Mixed-Width Reclaimed Wood for Flooring and Siding

Mixed-width reclaimed wood creates a unique, natural look for floors, walls, and siding. Unlike uniform-width boards, mixed-width installations require careful planning to balance aesthetics and material efficiency. For flooring, alternating widths add visual interest and enhance the rustic character of reclaimed wood. For siding, mixed-width boards can mimic traditional barnwood styles or create a custom, textured appearance. Using the calculator, you can determine how different board widths impact the total linear footage needed, ensuring you order the right amount for your project.

How do I use this square foot calculator for siding?

To use this square foot calculator for your siding quote request, first measure the width and height of each wall or wall section. Enter each section into the square foot calculator with inches support, and it’ll total the square footage of siding needed. Please refer to our blog post, Reclaimed Wood: Measuring for Siding, for some tips and tricks.

What if my measurements are in inches?

You can use the calculator even if your measurements are in inches. The square feet calculator is designed to work with feet and inches. If you only know footage in inches, divide by 12 to get the number of feet.

Can I use this calculator to estimate siding cost?

The nature of reclaimed wood siding is such that estimating cost online is challenging. The nature of the wood species, the preparation necessary, the plank width, and other factors will affect the total cost. Please reach out to us here with the product that you are interested in and the square footage you need, and we will be happy to help with a cost estimate.

How do I convert linear feet to square feet for siding?

Use our linear feet calculator to convert linear feet to square feet. Board width is a factor in this conversion.

How are feet different from square feet in siding projects?

Feet is a length measurement; square feet is an area calculation for siding. Use the feet to square feet calculator if you're measuring trim or edges and need to convert to area.

What if my walls aren’t simple rectangles?

If your walls are not simple rectangles, break the wall into smaller rectangles and enter each separately into the calculator square feet tool. It totals everything for you. Check out our blog post, Reclaimed Wood: Measuring for Siding, for tips and tricks.

Can I use this for outdoor siding projects?

Absolutely, you can use the square foot calculator for outdoor siding projects. This calculator is helpful if you're adding reclaimed wood siding to your structure. Please refer to our blog post Reclaimed Wood: Measuring for Siding, for tips.

Looking for reclaimed wood siding or paneling?

E&K Vintage Wood carries distinctive reclaimed siding and paneling sourced from historic structures across the U.S. Whether you're cladding a home or designing an accent wall, visit our reclaimed siding page to explore available materials.

Need reclaimed wood flooring for your project?

Discover one-of-a-kind reclaimed flooring at E&K, milled from salvaged wood with rich character and history. View our full range of species and finishes on the reclaimed flooring page.

Do I need to install a rain screen when using reclaimed siding?

You should always follow the NAAWS best practices. When installing exterior siding, especially wood siding, it’s critical to create a way for moisture to escape. That’s where a rain screen comes in.

A rain screen is a system that creates a ventilated gap between the siding and the wall sheathing. It’s typically made up of vertical furring strips or a drainage mat that lifts the siding slightly off the wall surface. This gap allows air to circulate and water to drain, preventing moisture from getting trapped behind the boards.

Rain screens don’t affect your siding measurements because they only change what’s behind the siding, not the surface area being covered. But they do dramatically improve the durability and long-term performance of your installation. For best results, follow best practices from the North American Architectural Woodwork Standards (NAAWS) or consult with your contractor to ensure the rain screen is properly integrated into your siding design.

Transform Your Next Project

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For general pricing and shipping guidelines, please visit our How to Order and Pricing page.

BeamsSidingFlooring

Beams

"Beam types" share the same species, surface, finish, construction (box or solid), and stain color. You can order multiple "beam sizes" for each "beam type" by adding the dimensions (quantity, length, width, height, and specifying interior or exterior dimensions.)

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Beam Type

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Our quotes for box beam orders are based on all beams being 3-sided. If you require 2-sided or 4-sided beams, please specify the quantities of each in the text box below, along with any other comments you may have.

Beam Size

Measurements Provided are the desired Interior or Exterior Dimensions of the Box Beam

picture showing how to measure interior and exterior dimensions of a beam
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+ New Beam Size
+ New Beam Type

Flooring

Flooring Product:

Engineered or Solid:

Flooring Thickness:

Flooring Width:

If you have any additional notes about flooring, add them here:

Siding

Siding Thickness:

Siding Width:

Profile:

Siding Product:

If you have any additional notes about siding, add them here:

Please make sure the above form includes all of the details for your beams, flooring, siding, and lumber order before submitting.

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E&K Wood Fine Reclaimed Wood Instagram Account

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View Instagram post by eandk_vintagewood

Sep 20

Open post by eandk_vintagewood with ID 17876738379562579
We made this custom whitewash with natural browns coming through on Reclaimed Douglas Fir for our customer in Virginia. #reclaimedwood #interiordesign #reclaimedwoodwall #reclaimedbarnwood #interiordesigner

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eandk_vintagewood

View Instagram post by eandk_vintagewood

Sep 19

Open post by eandk_vintagewood with ID 18155586001512230
Another giant Reclaimed Hand Hewn Oak Box Beam. These 3 beams go together to make one beam 10” x 25” x 39’. We took solid 200+ year old reclaimed Oak hand hewn beams and cut the faces off to make the box beam. The face is made from a single 39’ piece. #interiordesign #boxbeams #handhewnbeams #reclaimedwood #handhewnboxbeams

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eandk_vintagewood

View Instagram post by eandk_vintagewood

Sep 17

Open post by eandk_vintagewood with ID 18112523045042226
Here’s a big one!! This Reclaimed Oak Hand Hewn box beam is 40 foot long with a 12” face and 20”’sides. This is all made from skins of authentic 150 year old solid beams. #reclaimedwood #woodbeams #handhewnbeams #boxbeams #handhewn hewn

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