Free Gardening Calculators
Free online calculators for gardening, landscaping, and growing. Calculate soil, mulch, compost, seed, and planting quantities. Fast, accurate, no signup required.
Soil & Compost
Calculate soil volumes, compost quantities, mulch coverage, and amendment ratios for beds, borders, and containers.
14 calculators →
Lawn & Turf
Calculate grass seed rates, turf rolls, lawn feed quantities, and maintenance schedules for healthy lawns.
13 calculators →
Planting & Spacing
Calculate plant spacing, bulb quantities, hedge distances, and planting layouts for beds and borders.
10 calculators →
Pots & Containers
Calculate pot volumes, compost quantities, drainage layers, and container sizes for container gardening.
8 calculators →
Watering & Irrigation
Calculate water butt sizes, irrigation layouts, sprinkler coverage, and watering schedules.
9 calculators →
Fencing & Borders
Calculate fence panels, posts, concrete, trellis, edging, and garden border materials.
11 calculators →
Paving & Paths
Calculate paving slabs, gravel, sand, block paving, and path materials for patios and garden paths.
10 calculators →
Greenhouse & Growing
Calculate greenhouse sizes, heating requirements, grow light coverage, and propagation needs.
11 calculators →
Vegetable Garden
Calculate vegetable plot sizes, crop yields, seed quantities, and growing requirements for common vegetables.
14 calculators →
Garden Maths
General purpose area, volume, slope, and cost calculators for garden planning and material estimation.
10 calculators →
Water Features
Calculate pond volumes, liner sizes, pump requirements, and fountain specifications for garden water features.
2 calculators →
Outdoor Structures
Calculators for garden structures including lighting, pergolas, decking, and sheds.
1 calculators →
Planting
Companion planting layouts, spacing guides and planting combinations for vegetable gardens.
1 calculators →
Fencing & Boundaries
Retaining walls, boundary structures and garden boundaries.
1 calculators →
Reference
Useful gardening reference guides, planting charts and growing data.
4 guides →
GardenCalcs — Free Gardening Calculators
GardenCalcs offers 115+ free calculators across 14 categories. Every tool is fast, accurate, and requires no signup. Just enter your values and get instant results.
Browse all 115+ calculators or search above to find exactly what you need.