Soil and compost calculator
How much you need to fill a raised bed or a container, and what that comes to in bags. Build your own mix, or start from one below.
Your mix
Ingredient Parts Bag size Price a bag
- L £
- L £
Parts, not percentages. Two parts topsoil to one part compost is the same mix whether you write it as 2 and 1 or 6 and 3. Bag sizes start at what each one usually comes in, and prices are only used if you fill them in.
864 litres
That is 0.86 m³ for your bed.
240 × 120 cm, 30 cm deep
- Topsoil 60% no price 518 L needed, 21 bags of 25 L · 7 L left over
- Multipurpose compost 40% no price 346 L needed, 7 bags of 50 L · 4 L left over