Home Calculators Raised Bed Soil Calculator

Raised Bed Soil Calculator

Calculate exactly how much soil you need for one or multiple raised garden beds — with custom mix ratios, bag counts, cost estimates, and a Mel's Mix breakdown.

Volume = Length × Width × Depth  ·  Add 10–15% for settling  ·  Supports multiple beds

Raised Bed Dimensions

Add one or more beds — each can have different dimensions

inches — enter if topping up an existing bed

Soil Mix Recipe

Choose a preset or set custom proportions

Total: 100%

Bag Sizes & Pricing (optional)

Enter bag size and price to get cost estimates

Common Bed Sizes

Popular raised bed configurations

Total Soil Needed

Total Volume
cubic feet
cu yd
Topsoil Compost Perlite
Cu ft (net)
With settling
Cubic yards
Liters
Beds
Est. cost

Depth Guide

Herbs / greens6–8″
Most vegetables10–12″
Root veggies12–18″
Deep roots / trees18–24″

Soil Mix Tips

• Mel's Mix: ⅓ compost, ⅓ peat moss, ⅓ coarse vermiculite

• Avoid native soil — it compacts and drains poorly

• Compost improves nutrients and water retention

• Perlite keeps mix light and improves drainage