Measuring and estimating guides
How to measure real projects and turn the numbers into a shopping list.
October 17, 2026
How Much Sand Do I Need?
Match the sand to the job first, then the amount: coarse concrete sand for paver bedding, washed play sand for sandboxes. Coverage by depth, bags vs bulk, and the three sands people confuse.
October 17, 2026
How Much Concrete Do I Need for Steps?
A set of concrete steps is a stack of boxes: width times rise times run times N(N+1)/2. Volume by step count, why steps eat so much concrete, and how filling the core cuts it.
October 17, 2026
How Many Downspouts Do I Need?
Two rules set the count: one downspout per 600 square feet of roof for a 2x3, and one at least every 35 feet of gutter. Downspouts by roof size, gutter length, and the fittings each needs.
September 15, 2026
How Much Tile Do I Need?
Buy tile by the square foot, not the piece: measure the area, add 10 to 15 percent for cuts, and round up to whole boxes. Waste by layout, thinset by notch size, and why to keep spares.
September 15, 2026
How Much Sod Do I Need?
Measure the lawn in square feet, add 5 to 10 percent for cuts, and convert to rolls or pallets. How to measure an irregular yard, rolls vs pallets, and sod vs seed.
September 15, 2026
How Many Retaining Wall Blocks Do I Need?
Divide the wall's face area by the block's face area. Blocks per square foot by size, counts by wall size, the buried first course, and the gravel most people forget.
August 30, 2026
How Much Topsoil Do I Need?
Multiply square footage by depth in inches and divide by 324 to get cubic yards. Coverage per yard at every depth, cubic yards by project, and the weight to plan hauling around.
August 30, 2026
How Much Grass Seed Do I Need?
Seeding rates are quoted per 1,000 square feet and differ by grass type. Rates by species, pounds by lawn size, and why a new lawn takes double what overseeding does.
August 30, 2026
How Many Pavers Do I Need?
It takes 4.5 of the standard 4 x 8 inch pavers per square foot. Pavers per square foot by size, counts by patio size, and how much extra each laying pattern needs.
August 30, 2026
How Many Bags of Mulch Do I Need?
One 2 cubic foot bag covers 8 square feet at 3 inches deep. Coverage per bag at every depth, bag counts by bed size, and the point where bulk delivery gets cheaper.
August 6, 2026
How Much Baseboard Do I Need?
Measure the perimeter of each room, subtract the door openings, and add 10 to 15 percent. Linear feet by room size and by house size, plus what to deduct and what not to.
August 6, 2026
How Many Gallons of Paint Do I Need?
One gallon covers about 350 to 400 sq ft in one coat, and most rooms need two. Gallons by room size for walls, ceilings, and trim, plus what changes real coverage.
July 30, 2026
Gravel: Tons to Cubic Yards (and Back)
One cubic yard of gravel weighs about 1.4 tons. Conversion tables both ways, coverage per ton by depth, and the density figures for limestone, pea gravel, and sand.
July 26, 2026
What Size AC and Furnace Do I Need?
Room AC runs about 20 BTU per square foot; furnaces 30 to 60 depending on climate. How to size cooling, heating, and the water heater without oversizing.
July 26, 2026
How Many Sheets of Plywood for a Subfloor?
A 12x12 room takes about 5 sheets of 4x8 subfloor plywood with waste. Sheet counts by room size, plus thickness, screws, and adhesive per sheet.
July 25, 2026
How Much Insulation Do I Need? R-Values by Room
Attics want R-38 to R-60, 2x4 walls R-13 to R-15, 2x6 walls R-19 to R-21. The R-value targets by climate, plus how many batts or bags a room takes.
July 20, 2026
How Many Sheets of Drywall for a 12x12 Room?
A 12x12 room with an 8 ft ceiling takes about 17 sheets of 4x8 drywall including the ceiling, or 12 for walls only. Sheet counts by room size, plus compound, screws, and tape.
July 20, 2026
How Many Fence Posts Do I Need?
Fence posts, pickets, rails, and concrete by fence length: a 100 ft privacy fence needs 14 posts, about 219 pickets, and 28 bags of concrete. Tables and spacing rules inside.
July 18, 2026
Paver Patio Base: How Much Gravel and Sand
The layer-by-layer material breakdown for a paver patio: excavation depth, compacted gravel base, bedding sand, and joint sand, with real quantities.
July 18, 2026
How to Measure Your Yard for Mulch, Gravel, or Sod
A practical guide to measuring lawn and bed areas for bulk materials: breaking irregular shapes into rectangles, handling curves and slopes, and converting to cubic yards.
July 18, 2026
How Much Gravel Do I Need for a Driveway?
A single-car gravel driveway needs about 6 to 9 tons per 40 feet of length, built in compacted layers. Ton and cubic-yard tables by driveway size, plus the layer-by-layer build.
July 18, 2026
How Many Bags of Concrete for a 10x10 Slab?
A 10x10 slab at 4 inches thick takes about 62 bags of 80 lb concrete, or 1.36 cubic yards of ready-mix. Full bag counts by thickness and slab size, plus when to order a truck instead.
July 18, 2026
Bags vs Ready-Mix Concrete: Which to Buy
When bagged concrete makes sense, when to call for ready-mix, and how to convert between bags, cubic feet, and cubic yards without over-ordering.