Garden Shed Base Concrete Calculator

Plan your shed base perfectly with our calculator. Enter length, width, and depth to get concrete volume, plus exact cement, sand, and aggregate quantities for your DIY shed foundation.

Foundation Volume Calculation

Building a shed? Before you start digging and mixing, let our Shed Base Concrete Calculator do the heavy lifting (well, the maths at least). Simply enter the length, width, and depth of your shed base, and instantly see how much concrete you’ll need, no more guessing, spilling, or running to the hardware store mid-build.

Standard Mix

We’ve even broken it down into cement, sand, and aggregate quantities based on a standard 1:2:4 mix, giving you a realistic idea of how many 25 kg cement bags to buy and how much sand and gravel to prep. No more “I think I’ll need one more bag… or ten” moments.

Get Ready to Build

Whether you’re building a small garden shed, a medium-sized tool store, or a serious backyard workshop, this tool helps you plan efficiently, avoid waste, and save money. And best of all, it’s super quick to use, just input the dimensions, hit calculate, and let the numbers do the thinking while you get ready to build.

Final Word

And there you have it, a shed base planning tool that actually makes sense. No more estimating by eye or guessing how many bags of cement to buy. Now, you can confidently order materials, mix efficiently, and get your shed off the ground without stress.

If you have suggestions for extra features, maybe a “wastage percentage” or an option for deeper footings, drop a comment and we’ll consider it. And don’t forget to check out our other handy garden calculators for walls, paving, or compost, we’ve got all your DIY outdoor projects covered. Happy building, and may your shed be solid, level, and perfectly proportioned!