Raised Bed Soil Calculator
Calculate exactly how much soil, compost, and amendments you need for your raised bed. Enter your dimensions below.
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Raised Bed Soil Tips
Minimum Depth for Vegetables
Most vegetables need at least 12 inches of soil. Root crops (carrots, parsnips) need 18+ inches. Lettuce and herbs can get by with 6-8 inches.
Soil Settles 10-15%
Fresh soil compacts over time. Order 10-15% extra, or plan to top off after the first season.
Don't Use Garden Soil Alone
Native soil compacts in raised beds. Mix with compost and perlite/vermiculite for drainage and root growth.
Refresh Annually
Add 2-3 inches of compost each spring. The soil level drops as organic matter breaks down.