Guides
Guides answer “how much do I need?” for common home projects — with plain formulas, examples, and a matching free QtyLab calculator when you want the numbers fast. Popular tools: tile calculator, drywall calculator, paint calculator, gravel calculator, and concrete calculator.
All guides
How Much Mulch Do I Need? (Bags per Yard + Coverage Chart)
Learn how much mulch you need with a simple area-and-depth formula, cubic-yard examples, bag conversion tips, and Qty…
How Many Bags of Concrete Do I Need? (Bags per Yard + Slab Chart)
Calculate how many 60 lb or 80 lb concrete bags you need for a slab or footing, with examples and QtyLab’s free con…
How Many Gallons of Paint Do I Need? (Room Chart + Quarts vs Gallons)
A 12 x 12 room needs about 2.1 gallons for two coats on the walls: buy 2 gallons plus a quart. Room-size chart, gallo…
How Many Drywall Sheets Do I Need? (Sheetrock Chart by Room Size)
A 12×10 room needs about 15 sheets of 4×8 drywall for walls and ceiling. Charts by room size and square footage, sh…
How Many Tiles Do I Need? (Tiles + Boxes Chart by Tile Size)
A 12×10 floor needs 132 tiles of 12×12 or 66 of 12×24 with 10% waste. Charts for tiles per 100 sq ft, tiles by flo…
How Much Gravel Do I Need? (Yards, Tons + Coverage Chart)
A 12x20 driveway at 4 inches needs about 3.26 cubic yards (4.6 tons) of gravel. Formula, coverage chart, waste rules,…
How Much Fencing Do I Need? (Posts, Pickets, Rails + Concrete)
A 100 ft privacy fence at 8 ft spacing needs 14 posts, 13 sections, and about 234 1x6 pickets. Formulas, tables, conc…
How Much Sod Do I Need? (Square Feet, Pallets + Pieces)
A 1,000 sq ft lawn needs about 1,100 sq ft of sod with 10% extra, or 3 pallets at 500 sq ft. Pallet chart, piece size…
How Much Fertilizer Do I Need? (Pounds per 1,000 Sq Ft + Lawn Chart)
A 5,000 sq ft lawn at 3.2 lb per 1,000 sq ft needs 16 lb of fertilizer. Formula, nitrogen conversion chart, lawn-size…
How Many Pickets for a 100 ft Fence? (1×4, 1×6 + 1×8 Counts)
A 100 ft fence with posts 8 ft apart takes 234 1x6 pickets (buy about 246). Counts for 1x4, 1x6 and 1x8 pickets, gaps…
How Many Bags of Concrete for a 10×12 Slab? (80 lb + 60 lb)
A 10x12 slab 4 in thick takes 74 bags of 80 lb concrete (98 of 60 lb) — 1.63 cubic yards with 10% extra. Bags by th…
How Many Bags of Mulch in a Yard? (1.5, 2 + 3 cu ft Bags)
A cubic yard of mulch is 27 cu ft: 13.5 bags of 2 cu ft (buy 14), 18 bags of 1.5 cu ft, or 9 bags of 3 cu ft. Coverag…
How Many Sheets of Drywall for a 12×12 Room? (Walls + Ceiling)
A 12x12 room with 8 ft ceilings takes 19 sheets of 4x8 drywall for walls and ceiling, or 14 for walls only, with 10%…
How Many Pavers Do I Need? (Pavers per Sq Ft + Base and Sand)
4 x 8 pavers run 4.5 per sq ft, so a 12 x 12 patio needs 713 with 10% extra. Pavers per sq ft by size, patio-size cha…
How Much Gravel for a Driveway? (Tons by Size + How Deep)
A 12 x 50 ft driveway needs about 11.4 tons of gravel at 4 inches. Tons by driveway size, layer depths and truckloads.
How Many Bundles of Shingles Do I Need? (3 per Square + Roof Size Chart)
Most asphalt shingles are 3 bundles per square (100 sq ft). A 30 x 40 ft house with a 6/12 roof needs about 50 bundle…
How Many Squares Is a 2,000 Sq Ft House? (Roof Squares + Bundles)
A one-story 2,000 sq ft house (40 × 50 ft, 6/12 gable, 12 in overhangs) has about 2,442 sq ft of roof: 26.9 squares…
How Much Paver Base for a 10×10 Patio? (Tons, Yards + Bags)
A 10 × 10 ft paver patio with a 6 in base needs about 3.11 tons (2.22 cubic yards) of paver base with 20% for compac…
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Skip the article when you already have dimensions — open the matching free tool.
Tile Calculator
Floors and walls → tiles, waste, and optional box counts.
Drywall Calculator
Walls and ceilings → sheet counts plus rough mud estimate.
Paint Calculator
Walls and rooms → gallons with coats, coverage, and waste.
Gravel Calculator
Driveways and paths → cubic yards and tons.
Concrete Calculator
Slabs and columns → yards and bag counts.
Mulch Calculator
Beds and borders → yards and bag estimates.
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