How Much Concrete Do I Need? Free Mix Calculator & Cost Estimator

🧱 SiteMix · concrete

🏗️ Project type Foundation / general (1:2:3) Driveway heavy (1:1.5:2.5) Patio slab (1:2.5:3.5) Footing fill (1:3:6)

Cement

Sand

Stone

Cement grade 32.5 N42.5 N

Bag weight 25 kg40 kg50 lb (22.7kg)94 lb (42.6kg)

📐 Dimensions

ShapeSlabPost hole

UnitMetric (m)Imperial (ft)

Length (m)

Width (m)

Depth (m)

Ø diameter (m)

Waste 5%

Moisture DampDryDampWet

Slump MediumLowMediumHigh

Mixer (L)

💰 Cement ($/bag)

💰 Sand ($/t)

💰 Stone ($/t)

📦 Site mix – what you need

Volume0.00 m³

ft³0.0

Liters0

W/C0.50

Cement (bags)

0.0

25kg40kg50lb94lb

Sand

0.00 t

0 buckets

Stone

0.00 t

0 buckets

Water

0.0

gal 0.0

🔄 0 batches

🧾 material cost

$0.00

*20L buckets, moisture & waste included. All figures in dark text for clarity.

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