Soon
Drywall
4×8 and 4×12 sheets for walls and ceilings, with waste.
Free US DIY calculators
Measure once. Buy the right amount.
HomeFixMath turns a fence, a room, or a deck into a shopping list. Enter the size of the job and see how many panels, gallons, or boards to buy before you get to the store.
No account. The math runs in your browser.
How it works
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1
Measure
Tape the run, the room, or the deck. Feet are enough.
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2
Calculate
Enter the size you can buy — panel width, coats, or board length. Counts round up.
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3
Shopping list
Print or copy the list and take it to the store.
Pick a calculator
Three you can use today. Each one ends in a shopping list.
Fence panels
Panels, posts, and caps from the run length and any gates.
Open calculatorPaint
Gallons for walls and an optional ceiling, after doors and windows.
Open calculatorDeck boards
How many boards cover a rectangle, with a gap and waste.
Open calculatorComing soon
Soon
Gravel and mulch
Cubic yards and bag counts for beds and paths.
US customary units. Each calculator shows the formula and a list you can print or copy. When retailer programs are approved, optional buy links may appear next to that list. See our Affiliate Disclosure.
Estimates only — confirm with product labels, local code, and your measurements. Not engineering advice. Call 811 before you dig.