K1K1 Concrete

Free tool

Concrete calculator

Choose a shape, enter dimensions, and see how much concrete to order. Add more pieces to total up a whole job.

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This piece

0.00 yd³

Includes overage · 0 ft³ before waste

Job total

0.00 yd³

80 lb bags

0

60 lb bags

0

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Estimates only. Bag counts assume roughly 0.60 ft³ per 80 lb bag and 0.45 ft³ per 60 lb bag of typical premix. Check the yield printed on your product. Actual needs depend on base grade and forms.

Typical thickness

Walkways and patios are often 4 in. Driveways carrying heavier vehicles are often thicker. Follow your plans or local code.

Bags or truck?

For more than about 1 yd³, ready-mix delivery is usually more practical and gives a more consistent pour.

Running short

A short load can leave a cold joint. Order a little extra rather than too little.