How Much Concrete Do I Need? Easy Calculation Guide for Homeowners
How Much Concrete Do I Need? Easy Calculation Guide for Homeowners
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“How much concrete do I need?”
Whether you’re laying a driveway, building a shed base, putting in fence post footings or pouring a new patio, this is always the first question asked.
Ordering too little concrete causes delays, weak spots and extra delivery costs. Ordering too much means wasted material and wasted money.
The good news? Working out the correct volume isn’t as complicated as it sounds and we’ve made it even easier with our online Concrete Calculator, which can take your measurements and give you an instant estimate based on the shape of your project.
How to Calculate Concrete Volume (Simple Formula)
Concrete is measured in cubic metres (m³).
The basic formula is:
Length × Width × Depth = Volume of Concrete Needed
Example: A driveway that is 5m long, 3m wide and 0.1m deep:
5 × 3 × 0.1 = 1.5m³ of concrete
If your site has more complex shapes, cylinders, trenches, footings, rounded areas, calculations can become tricky.
That’s exactly why we built our calculator.
Use Our Online Concrete Calculator
Our calculator allows you to enter:
✔ Rectangle, square, cylinder or round areas ✔ Length and width ✔ Depth of your slab
You’ll also receive an quick quote of how much concrete will cost you.
👉 Try the Concrete Calculator here: https://www.gbconcreteandpump.co.uk/concrete-calculator/
Unsure About Mix Type, Pumping, or Site Access? We Help With That Too
The unique part of our calculator is that it doesn’t stop at the numbers.
Once you submit your calculation, one of our concrete experts will review your project and provide:
✔ the best concrete mix for your job ✔ whether you need a pump (and what type) ✔ how many workers you’ll need ✔ delivery time estimates ✔ tips for perfect results on pour day
This ensures homeowners and builders get the right material and avoid costly mistakes.
Common Concrete Volumes for Popular Project
Project Type
Typical Depth
Approx. Volume
Patio or path
100mm
1–3m³
Garage or shed base
100–150mm
2–8m³
Driveway
100–150mm
3–10m³
Fence post holes
200–300mm
varies by spacing
Footings / foundations
200–300mm
depends on length
(Projects vary, our calculator will give an accurate number for your measurements.)
✅ Ready to Find Out How Much Concrete You Need?
You can get an answer in minutes.
✅ Fast ✅ Accurate ✅ Checked by a real expert ✅ No guesswork
