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Practical help for every project in your home.

Clear guides written by people who have done the work, and free calculators that turn your measurements into a shopping list — from flooring and paint to concrete, roofing and heating — all in one place on homesblogs.

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Hand-picked guides for the projects readers are planning right now.

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Popular calculators

Free estimating tools for materials, volume and sizing. Each one explains its formula.

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Flooring & Finishes

Flooring Calculator

Calculate square footage, boxes of flooring and total cost with the right waste for your layout.

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Flooring & Finishes

Paint Calculator

Estimate gallons of wall paint for a room after subtracting doors and windows.

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Concrete & Landscaping

Cubic Yard Calculator

Convert length, width and depth into cubic yards for concrete, soil, mulch or gravel.

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Roofing & Exterior

Roof Square Footage Calculator

Estimate roof area, roofing squares and shingle bundles from the house footprint and pitch.

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Roofing & Exterior

Fence Calculator

Count posts, rails, sections and concrete bags for a wood fence of any length.

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Lumber & Woodwork

Board Foot Calculator

Find the board feet and cost of hardwood or rough lumber from thickness, width and length.

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Heating & Cooling

AC Ton Calculator

Estimate air conditioner size in tons and BTU/h from area, climate, ceiling height and sun.

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Concrete & Landscaping

Sonotube Concrete Calculator

Find the concrete volume and bag count for round Sonotube forms and post-hole footings.

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Helpful guides

Step-by-step references we keep updated. Start here if you are planning a project for the first time.

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Every guide links to the calculators it uses, so you can check the numbers as you read.