DIY
Concrete, paint and material quantities: simple calculators and clear methods so you buy exactly what you need.
Calculator
Concrete calculator (slabs, footings, post holes)
Work out how much concrete you need for a slab, footing or round post hole, with a waste allowance, in cubic yards or cubic meters, plus the number of 80 lb or 60 lb bags.
CalculatorPaint calculator for a room
Enter room size, doors, windows, coats and coverage to get the wall area, gallons (or liters) of paint needed and the cans to buy.
DIYHow many bags of concrete do I need?
One cubic yard of concrete takes 45 bags of 80 lb or 60 bags of 60 lb QUIKRETE Concrete Mix. Formulas, a bag chart for common slabs and post holes, and when to order ready-mix.
DIYHow much paint do I need for a room?
A 12 × 12 ft bedroom with 8 ft ceilings needs about 2.2 gallons for two coats on the walls. Step-by-step method, a chart by room size and the mistakes to avoid.