Concrete Calculator
Work out how much concrete you need for a slab, footing or floor. Enter the dimensions in metres to get the volume in cubic metres and feet, plus an estimate of 40 kg pre-mix bags.
Concrete Calculator
OtherConcrete volume and bags needed for a slab or footing.
Concrete volume
5 m
m
4 m
m
0.1 m
m
Concrete needed
2 m³
Add ~5–10% extra for spillage and uneven surfaces.
- Volume (cubic metres)
- 2 m³
- Volume (cubic feet)
- 70.6 ft³
- 40 kg bags (approx.)
- 121 bags
Frequently asked questions
How many bags of concrete do I need?
It depends on the volume and bag yield. A 40 kg pre-mix bag yields roughly 0.0166 m³, so divide your volume by that - and always buy a little extra.
Related calculators
Keep going - these pair well with what you just calculated.
Subnet Calculator
IPv4 network, broadcast, mask & host range from CIDR.
Other
Hot
EMI Calculator
Calculate monthly loan installments, total interest & payment.
Finance
Hot
SIP Calculator
Project mutual-fund wealth with monthly SIP investments.
Investment
GST Calculator
Add or remove GST with instant CGST & SGST split.
Business