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How much material do you need?
One page per question, with the numbers already worked out for the common sizes. Every table is produced by the same formulas as the calculators, so you can open the tool and change any figure.
3D room planner
Open the calculatorConcrete calculator
Open the calculator- How many bags of concrete for a 10x10 slab?Bags of 80, 60 and 40 lb concrete for a 10 x 10 ft slab at 4, 5 and 6 inches with 10% waste, plus the metric 3 x 3 m version in 25 kg and 20 kg bags.Concrete calculator
- How many bags of concrete per fence post? (40, 50, 60 and 80 lb, 20 and 25 kg)Bags of 40, 50, 60 and 80 lb concrete and pounds of mix per 4x4 or 6x6 fence post, by hole width and depth, plus 20 and 25 kg bags for 100 mm posts.Concrete calculator
- How many bags of concrete for a cubic yard? 45 of 80 lb, 60 of 60 lb, 90 of 40 lb45 bags of 80 lb make a cubic yard of concrete (0.60 cu ft a bag), 60 of 60 lb, 90 of 40 lb; 50 with 10% waste. An 80 lb bag is 0.022 cubic yards.Concrete calculator
- How much concrete for a 12x12 slab? (plus 16x16, 20x20, 24x24)Cubic yards and bags of concrete for 12x12, 16x16, 20x20 and 24x24 ft slabs at 4 and 6 inches with 10% waste, the 4 x 4 m metric slab, and the point where ready-mix wins.Concrete calculator
- How many bags of concrete for a sonotube? 8, 10, 12 and 16 inchBags of 80, 60 and 50 lb concrete for 8, 10, 12 and 16 inch sonotubes at 2, 3 and 4 ft, concrete per foot of tube, and 200 to 300 mm forms in 25 kg bags.Concrete calculator
- How many bags of concrete for a 4x4 slab? (5x5, 6x6, 8x8 too)Bags of 80, 60 and 50 lb concrete for 4x4, 5x5, 6x6 and 8x8 ft pads at 4 and 6 inches with 10% waste, for AC units, hot tubs, steps and small sheds, plus metric pads.Concrete calculator
- How much concrete for a 4x4 m slab? (3x3 to 6x8 m)Cubic metres of concrete for 3x3, 4x4, 5x5, 6x6, 4x6 and 6x8 m slabs at 100, 125 and 150 mm with 10% waste, in 25 kg and 20 kg bags, and where ready-mix takes over.Concrete calculator
- How much concrete do I need for a driveway?Cubic yards and truck loads of concrete for 10x20 to 24x40 ft driveways at 4, 5 and 6 inches with 10% waste, the same in 80 lb bags, and metric 3x6 to 6x12 m drives.Concrete calculator
- How much concrete for a garage floor? (1, 2 and 3 car)Cubic yards of concrete for 1, 2 and 3 car garage floors (12x20 to 24x36 ft) at 4, 5 and 6 inches with 10% waste, the 80 lb bag count for comparison, and metric garages.Concrete calculator
Brick and block calculator
Open the calculator- How many bricks per square metre (and per square foot)?Bricks and blocks per square metre and per square foot for the common formats, how the mortar joint changes the count, and what to order for a 10 m² wall.Brick and block calculator
- How many bricks per square foot? Walls, patios and floorsModular bricks per square foot of wall (about 7) and laid flat on a patio (4.5 to 5), bricks for 100 to 500 sq ft with 5% waste, mortar, and the UK brick per sq ft.Brick and block calculator
- How many bricks do I need for a fire pit? Fire pit brick calculator for 30 to 48 inch pitsA 36 in round fire pit takes 16 modular bricks a course, 84 for 5 courses with 5% waste, and 14 fire bricks a course to line it. 30 to 48 in, square pits.Brick and block calculator
- How many blocks for a retaining wall? (12x4, 16x6 and 18x8 in)Retaining wall blocks for 10 to 50 ft walls at 1, 2 and 3 ft high in the three common sizes, plus the gravel base and the drainage stone behind the wall, and metric.Brick and block calculator
- How many bags of mortar per 100 bricks (and per 100 blocks)?80 lb and 60 lb mortar bags per 100, 500 and 1,000 bricks or 8x8x16 blocks from the label yields, mortar volume per square metre of wall, and 25 kg bags for UK bricks.Brick and block calculator
- How many 73mm bricks per m2? Single and double skin, imperial bricks and mortar53.5 bricks per m² for a 215 x 102.5 x 73 mm brick, single skin, 10 mm joints (56.2 with 5% waste, 107.1 double skin); 50.6 for 228 x 108 x 73 mm imperial.Brick and block calculator
- How many blocks per m2? 440 x 215 concrete and breeze blocks, mortar and wasteStandard 440 x 215 mm blocks with a 10 mm joint: 9.88 per m², 10.4 with 5% waste, 19.8 for two leaves, 0.9 bags of 25 kg mortar per m². Laid flat: 20.2.Brick and block calculator
Paint calculator
Open the calculator- How much paint do I need for a 12x12 room?A 12x12 room with 8 ft ceilings has about 338 sq ft of wall: 1.93 gallons for two coats at 350 sq ft per gallon, so buy 2. Litres, 9 and 10 ft, ceiling.Paint calculator
- How many square feet does a gallon of paint cover?A gallon covers about 350 to 400 sq ft on smooth walls, less on rough or bare surfaces. Gallons for 400 to 2,000 sq ft at one and two coats, and litres per square metre.Paint calculator
- How much paint do I need for a ceiling? Ceiling paint calculator for 10x10 to 20x20 ftA 12x12 ceiling is 144 sq ft: 0.82 gallons for two coats at 350 sq ft per gallon, so 1 gallon or 4 quarts. 10x10 to 20x20, textured, and litres.Paint calculator
- How much paint for a 10x10 room? (10x12, 12x14 and 14x16 too)Gallons of paint for a 10x10 room with an 8 ft ceiling, a door and two windows, one or two coats, plus the ceiling; 10x12 to 14x16 rooms; 3x3 to 4x5 m rooms in litres.Paint calculator
- How many square feet does a quart of paint cover?A quart covers about 90 to 100 sq ft with one coat: what that means for a door, a wall, trim and a small ceiling at one and two coats, plus litres and 5 gallon pails.Paint calculator
- How much stain do I need for a fence? 50 to 300 ftGallons of stain or paint for a 6 ft wood fence from 50 to 300 ft, one or both sides, at one and two coats on rough or smooth boards, plus litres for metric fence panels.Paint calculator
- How much exterior paint do I need for a house? (1,000 to 3,000 sq ft)Gallons of exterior paint for one and two storey houses of 30x40 to 40x60 ft at one and two coats on smooth and rough siding, openings deducted, trim, and litres.Paint calculator
- How much driveway sealer do I need?5 gallon pails of asphalt sealer for 10x20 to 24x40 ft driveways at one and two coats on smooth and rough blacktop, from the coverage printed on the pail, and metric.Paint calculator
- How much paint for a whole house interior? (1,000 to 3,000 sq ft)Gallons of wall paint for 1,000 to 3,000 sq ft homes with 8 and 9 ft ceilings at two coats, ceilings and trim counted separately, from a 12x12 room ratio, plus litres.Paint calculator
Tile calculator
Open the calculator- How many tiles per square metre? 30x30, 60x60 and other sizesTiles per square metre for the common sizes with a 3 mm grout gap, how many to order for 10 m² with cutting waste, and when to allow more than 10%.Tile calculator
- How many 12x12 tiles for 100 square feet? (12x24, 18x18, 24x24 too)Tiles needed for 100, 200, 300 and 500 sq ft in 12x12, 12x24, 18x18 and 24x24 inch sizes with a 1/8 inch grout line and 10% waste, and how to turn that into boxes.Tile calculator
- How many tiles do I need for a shower? 12x24, subway and 12x12Wall area of 32x60, 36x36 and 36x48 in showers with 8 ft walls, tiles needed in 12x24, 3x6 subway, 12x12 and 2x2 mosaic sheets with 10 to 15% waste, and the floor on top.Tile calculator
- How many pavers do I need for a 10x10 patio? 12x12, 16x16, 24x24Pavers for a 10x10, 12x12, 16x16 and 20x20 ft patio in 4x8, 6x9, 12x12, 16x16 and 24x24 inch sizes with a 1/8 in joint and 5% waste, plus the base to go under them.Tile calculator
- How many tiles for a kitchen backsplash? (subway, 4x12, mosaic)Subway 3x6, 4x12 and 12x12 mosaic sheet counts for backsplashes of 10 to 30 linear feet at 18 inches high with 10% waste, boxes to order, and metric splashbacks.Tile calculator
Gravel calculator
Open the calculator- How much gravel do I need for a driveway?Cubic metres, tonnes and bulk bags of gravel for typical driveway sizes at 50, 75 and 100 mm depth, with the imperial equivalents in cubic yards and tons.Gravel calculator
- How much does gravel weigh per yard? Gravel, topsoil, fill dirt and sand in lb, tons and kgA cubic yard of gravel weighs about 2,528 lb (1.26 US tons), compacted road base about 1.4 tons, topsoil 2,023 lb, fill dirt 2,444 lb; gravel 1.5 t per m³.Gravel calculator
- How much gravel for a shed base? 6x8 to 12x16 ftCubic yards, tons and bags of gravel for 6x8, 8x10, 10x12 and 12x16 ft shed bases at 4 and 6 inches, why the base runs past the shed, and metric sizes in tonnes.Gravel calculator
- How much sand and gravel do I need under pavers?Gravel base at 4 or 6 inches and 1 inch of bedding sand for 100 to 500 sq ft of pavers: cubic yards, tons and bags, plus the metric patio in tonnes and bulk bags.Gravel calculator
- How much mulch do I need? Bags and cubic yards by areaCubic yards and 2 or 3 cu ft bags of mulch for 100 to 1,000 sq ft at 2, 3 and 4 inches deep, how many bags make a yard, and metric beds in cubic metres and 50 L bags.Gravel calculator
- How much gravel for a French drain? Per foot and per 50 or 100 ftCubic feet, cubic yards, tons and bags of washed gravel per foot of French drain for 12 in wide trenches at 18 and 24 in deep, minus the 4 in pipe, and per 25 to 100 ft.Gravel calculator
- How much sand do I need for a sandbox? 4x4 to 8x8Cubic feet, pounds and 50 lb bags of play sand for 4x4, 5x5, 6x6 and 8x8 ft sandboxes at 6, 8 and 10 inches deep, the turtle sandbox, and metric sandpits in 25 kg bags.Gravel calculator
- How much soil for a 4x8 raised bed? (3x6, 4x4, 4x12 too)Cubic feet, cubic yards and bags of soil for 3x6, 4x4, 4x8 and 4x12 ft raised beds at 8, 12 and 18 inches deep, how many 1.5 and 2 cu ft bags, and metric beds in litres.Gravel calculator
- How much gravel do I need for a walkway or path?Cubic yards, tons and 0.5 cu ft bags of pea gravel for 3 and 4 ft wide paths of 10 to 50 ft at 3 and 4 inches deep, the crushed stone base under it, and 1 m wide paths.Gravel calculator
Concrete cost calculator
Open the calculator- How much is a yard of concrete? (delivered, 2026)Ready-mix runs about 125 to 175 per cubic yard in the US, 2026, plus a short-load fee under 3 to 5 yards. What 1 to 10 yards cost delivered, and the same volume in bags.Concrete cost calculator
- Concrete slab cost calculator: cost per square foot, 10x10 to 30x30 (2026)Concrete slab cost: a 10x10 slab 4 in thick is 1.36 cubic yards, $300 of ready-mix or $434 in 62 bags of 80 lb; $662 to $1,000 with base and labor.Concrete cost calculator
- How much does a concrete driveway cost? (concrete only)Ready-mix cost for single and double driveways from 10x20 to 24x40 ft at 4, 5 and 6 inches, cost per square foot, why bags do not work, and what else is on the bill.Concrete cost calculator
Fence calculator
Open the calculator- How many fence posts do I need? (50 to 300 ft)Posts, sections and rails for 50 to 300 ft of fence at 6 and 8 ft spacing, what a gate or a corner adds, the bags of concrete for the holes, and 10 to 100 m in metric.Fence calculator
- How deep should a fence post be? (by fence height)A third of the height in the ground, 2 ft minimum: depth, hole size, post length to buy and concrete bags per hole for 3 to 8 ft fences, and what the frost line changes.Fence calculator
- How many pickets for a fence? (per section and per 100 ft)Pickets per 6 and 8 ft section and per 100 ft for 3 1/2 and 5 1/2 in boards at 0 to 3 1/2 in gaps, with waste, screws per picket, and the metric board counts.Fence calculator
Concrete block calculator
Open the calculator- How many concrete blocks do I need for a wall?8x8x16 blocks per square foot and for walls from 10x4 to 40x8 ft with 5% waste, mortar volume, and the metric 440 x 215 mm block per square metre.Concrete block calculator
- How much concrete to fill cinder blocks? (per block, per 100, per wall)Grout per 8 in block (0.22 cu ft, three blocks per 80 lb bag), per 100 blocks and for 10 to 40 ft walls with every cell filled or bars every 16 to 48 in, plus metric.Concrete block calculator
- How much does a cinder block wall cost? (materials per wall and per square foot)Blocks, mortar and grout priced for walls from 10x4 to 40x8 ft at 2026 shelf prices, materials per square foot, what grouting adds, and HomeGuide's installed range.Concrete block calculator
- Building a block wall: how many blocks and bags of mortar by length and height, plus rebar and groutA 20 x 6 ft wall of 8 in block: 142 blocks with 5% waste, 12 bags of 80 lb mortar, 19 bags of grout with bars every 32 in. Walls 10-50 ft and 2-10 m.Concrete block calculator
- How much does a cinder block garage cost? (blocks, mortar, grout and slab for 1, 2 and 3 car)Blocks, mortar and grout for 1 to 3 car block garages, 12x20 to 36x24 ft, 8 ft walls, doors and windows taken off, plus the 4 in slab, at 2026 prices.Concrete block calculator
Topsoil calculator
Open the calculator- How much topsoil do I need? Bags and cubic yards by areaCubic yards, tons and bags of topsoil for 100 to 2,000 sq ft at 2, 4 and 6 inches deep, the metric version in cubic metres and 40 L bags, and when to buy in bulk.Topsoil calculator
- How much fill dirt do I need? (yards, tons and truckloads by area)Cubic yards of fill dirt for 100 to 5,000 sq ft at 3 to 12 in with 20% for compaction, the tons and 10-yard truckloads that is, filling a low spot, and metric.Topsoil calculator
- How much is a yard of dirt? Fill dirt and topsoil cost (2026)Fill dirt 5 to 25 and topsoil 10 to 50 per cubic yard delivered, US 2026 (HomeGuide): truckloads, delivery fees, bags, and what 1 to 30 yards cost for a lawn or low spot.Topsoil calculator
- How many bags of topsoil in a cubic yard? (40 lb, 1 and 2 cu ft bags)36 bags of 40 lb (0.75 cu ft) make a cubic yard, 27 of 1 cu ft, 14 of 2 cu ft. Bags for 1 to 10 yards, what they cost against a bulk load, and where bags stop paying.Topsoil calculator
- How much does a yard of dirt weigh? Topsoil, fill dirt and sand in pounds and tonsA yard of dirt weighs about 2,023 lb (topsoil, dry) to 2,444 lb (fill dirt, 1.22 US tons); wet soil is heavier. Tons per yard, yards per ton, truckloads.Topsoil calculator
Gravel cost calculator
Open the calculator- How many yards in a ton of gravel? (and tons in a yard, by stone)0.79 yards in a ton of crushed stone, 1.26 tons in a yard: yards to tons and back for 1 to 30 of each by stone type, the supplier ranges behind the figures, and metric.Gravel cost calculator
- How much does a gravel driveway cost? (per square foot and by size, 2026)Tons, yards and cost of gravel for driveways from 10x20 to 12x100 ft with a compacted base and a top layer, at HomeGuide's 2026 prices per ton, delivery and spreading.Gravel cost calculator
- How much is a yard of gravel? (and a ton) Prices by stone, 2026Bulk gravel is 15 to 75 per cubic yard and 10 to 50 per ton, US 2026 (HomeGuide): the price by stone, what 1 to 20 yards or tons cost delivered, and bags against bulk.Gravel cost calculator
- How much does a ton of gravel cover? (at 2, 3 and 4 inches, by stone)A ton of 3/4 in crushed stone is 0.79 cubic yards: about 85 sq ft at 3 in, 128 at 2 in, 64 at 4 in. Coverage by stone, tons for 100 to 1,000 sq ft, price.Gravel cost calculator