Raised Bed Soil Calculator

Calculate exactly how much soil, compost and mix ingredients you need for your raised garden bed. Enter your dimensions and choose your soil mix to get instant results in litres and cubic metres.

Welcome to the Raised Bed Soil Calculator

Your faithful companion in the battle against underfilled garden beds. You have finally built that lovely raised bed, stood back to admire your work and instantly realised something painful. You have no idea how much soil you need to fill it. Should you buy three bags, ten bags, or take out a second mortgage and order a small lorry load. We have all been there.

Soil Volume Calculation

This calculator solves that problem instantly. Whether you are planting veg, herbs, flowers or a full blown self sufficiency experiment, knowing your soil volume saves your wallet and your back. No more second guessing, no more unexpected extra trips to the garden centre, no more realising you are half a bed short at 7pm on a Sunday.

Soil Mix

• Choose your soil mix - Not all raised beds are created equal and neither are their soil recipes. So the tool gives you three realistic and popular options.
• Classic Mix - Perfect for most gardeners, with topsoil, compost and coarse sand for drainage.
• Mel’s Mix - The Square Foot Gardening favourite, light, fluffy and productive.
• Vegetable Boost Mix - For the growers who want nutrient rich soil with a little extra kick.

Simple Inputs, Instant Results

Enter your bed dimensions, choose your preferred soil blend and the calculator works out your soil volume in both cubic metres and litres. Then it breaks that volume into individual components, so you know exactly how much compost, topsoil or vermiculite to buy.

Your raised bed deserves to be filled properly and you deserve not to overpay. This little tool keeps everything neat, accurate and gardener friendly.

Final Word

Your raised bed is only as good as the soil you fill it with. Getting the quantities right means better drainage, healthier roots and stronger harvests. This calculator saves you time, money and guesswork, leaving you to focus on the enjoyable part, the growing.

If you found this tool helpful, feel free to bookmark it, share it or try out the other gardening calculators on the site. Every garden is different and a few smart tools can make planning much easier. If you have suggestions or want extra features added, drop a comment below...