All calculators

Choose the calculator first. Use guides only when a setting needs a closer look.

Start with your material calculator, then open a guide for coverage, waste, depth, conversions, or bag counts only when that choice could change the result.

Start with paint How it works

Room surfaces

Use these when the order is based on walls, floors, or tile coverage.

Room surfaces

Paint calculator Estimate paint for walls and ceilings. Best for: Single rooms and repaint planning.

4 to 8 inputs Gallons or liters

Room surfaces

Flooring calculator Turn room area into an order quantity. Best for: Plank, laminate, or sheet orders.

4 to 6 inputs Order area and boxes

Room surfaces

Tile calculator Estimate tile count and box totals. Best for: Floor and wall tile orders.

5 to 8 inputs Pieces and cartons

Bulk materials

Use these when depth or slab thickness drives the quantity.

Bulk materials

Mulch calculator Estimate bag or bulk mulch from depth. Best for: Garden beds and refresh layers.

5 to 7 inputs Volume and bag count

Bulk materials

Gravel calculator Estimate cubic yards and tons to order. Best for: Paths, bases, and trenches.

5 to 7 inputs Cubic yards and tons

Bulk materials

Concrete calculator Estimate slab volume and bag counts. Best for: Small slabs and pads.

4 inputs Cubic yards and bags

Support guides

Open a guide only when one input choice could materially change the estimate.

Open when this changes

Paint

Open this guide when coverage or coats could change how much you buy.

Paint coverage per gallon Open this if the default coverage does not match the can label.

Open when this changes

Flooring and tile

Open these guides when cuts, layout, or waste could push the order higher.

Flooring waste factor guide Open this if cuts or layout could change the overage. Tile layout and waste guide Open this if the pattern changes the tile count.

Open when this changes

Mulch and gravel

Open these guides when depth or package size is still uncertain.

Mulch depth guide Open this if the bed depth is still a guess. Gravel depth guide Open this if the base depth could materially change the order. Concrete bag yield guide Open this if bag count is the decision you still need to verify.

Open when this changes

Estimate help guides

Open these guides when units or volume conversion could change the order.

Square feet to cubic yards guide Open this if area and depth still need to turn into volume. Imperial and metric conversion guide Open this if unit switching still feels risky. How estimates work Open this if you want to see the defaults, rounding, and unit rules behind the estimate.

Know the unit you need?

Use this shortcut only if you already know whether you need gallons, boxes, cubic yards, or tons.

Need gallons or liters? Start with paint for room surfaces and coating coverage.

Need piece count or cartons? Start with tile when cuts and layout control the order.

Need cubic yards or tons? Start with gravel or concrete for depth-driven bulk buys.