Garden Tools & Calculators
Free calculators and planners for gardeners — watering, planting, composting, soil, and fertilizing.
Plant Spacing Calculator
Find how many plants fit your beds and the right spacing, in square or triangular layouts
Watering Schedule Planner
Build a watering schedule from your plants, soil type, climate, season, and rainfall
Soil Volume Calculator
Calculate how much soil, compost, or mulch you need — in cubic feet, yards, and bags
Planting Calendar
Get indoor-start, transplant, direct-sow, and harvest dates from your last frost date
Garden Layout Planner
Plan plant counts per crop and get companion-planting suggestions for your bed
Fertilizer Calculator
Calculate precise NPK application rates for organic and synthetic fertilizers by plant and area
Sunlight Requirements Guide
Match plants to your available sunlight — full sun, partial sun, partial shade, or full shade
Garden Pest Identifier
Identify common garden pests and get organic, beneficial-insect-friendly treatments