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Garden Calculators
Soil volume, planting, and yard math — clean calculators that show the formula.
6 calculators — all free, formula included
Raised Garden Bed Soil Calculator
How much soil you need by bed size and depth — cubic feet, cubic yards, bags, and cost.
Use Calculator →Vegetable Planting Calendar Calculator
When to start and transplant common vegetables, by USDA hardiness zone.
Use Calculator →Garden Soil & Mulch Calculator
How much topsoil, compost, or mulch you need for any garden bed.
Use Calculator →Plant Spacing Calculator
How many plants actually fit your bed — real grid math by length, width, and spacing.
Use Calculator →Garden Watering Calculator
How many gallons of water your garden or lawn needs per week — by area, plant type, soil, and climate.
Use Calculator →Compost Calculator
Check your browns-to-greens ratio and see exactly how much more to add to balance your pile.
Use Calculator →