Concrete Calculator
Cubic metres or yards of concrete for slabs, footings and columns.
m
m
m
%
Concrete volume
1.26m³
In cubic yards
1.648yd³
Approx weight
3,024kg
25 kg bags
115
ShowHide the working
- 1Volume = 4 × 3 × 0.1 = 1.2 m³
- 2+ 5% = 1.26 m³
Formula
volume = length × width × depthHow it works
Works out concrete volume for a slab or footing, with weight and a bag estimate.
Example
A 4 × 3 m slab 0.1 m thick needs about 1.26 m³ of concrete.
Bag yields vary by mix. For large pours, ready-mix delivery is usually cheaper and more accurate.
About the Concrete Calculator
Cubic metres or yards of concrete for slabs, footings and columns. It sits in the Home & Construction section of NWS Calc, a free collection of calculators that run entirely in your browser. There is no signup, no paywall and no tracking — open the page, enter your numbers, get an answer.
Frequently asked questions
- Is the Concrete Calculator free to use?
- Yes. Every calculator on NWS Calc is completely free, with no signup, no usage limits and no ads.
- Does my data leave my device?
- No. The Concrete Calculator runs entirely in your browser using JavaScript. Nothing you type is uploaded, logged or stored on a server.
- Can I use the Concrete Calculator on my phone?
- Yes. The page is fully responsive and works in any modern mobile or desktop browser — there is nothing to install.
- What else is in Home & Construction?
- Paint, tile, concrete, flooring, lumber and material estimates. You can browse the full Home & Construction category for related calculators.