Calculator collection

Garden & Landscaping Calculators

Plan soil, planting, lawn, watering and landscaping quantities with practical calculators.

Bulb Spacing CalculatorEstimate bulb quantity from bed area, center-to-center bulb spacing and square or staggered layout.Compost CalculatorCalculate compost volume from application area, compost depth and an optional bag size.Compost Carbon:Nitrogen Ratio CalculatorEstimate the combined carbon-to-nitrogen ratio of two compost ingredients from their dry-matter proportions and C:N ratios.Container & Pot Size CalculatorEstimate physical container volume for tapered round pots, straight-sided round pots or rectangular planters.Drip Irrigation CalculatorCalculate total drip-system flow and water volume from emitter count, emitter flow and runtime.Fertilizer CalculatorCalculate fertilizer product quantity from lawn or garden area and an application rate.Flower Bed CalculatorPlan flower-bed area, soil and mulch volume, with an optional approximate plant count.Garden Hose Flow Rate CalculatorCalculate garden-hose flow from a timed bucket test and estimate fill time for a target volume.Garden Soil CalculatorCalculate garden soil volume from bed area, soil depth and an optional bag size.Grass Seed CalculatorCalculate grass seed quantity from lawn area and a seeding rate in pounds per 1,000 square feet or metric units.Hedge Spacing CalculatorCalculate hedge plant quantity and equal spacing along a straight hedge run.Irrigation CalculatorCalculate irrigation water volume and equivalent application depth from zone flow, runtime and irrigated area.Lawn Area CalculatorCalculate lawn area from one or more simple shapes, including optional deductions for patios, beds or other excluded areas.Mulch CalculatorCalculate mulch volume in cubic yards, cubic feet and cubic meters, with an optional bag-count estimate.NPK CalculatorCalculate fertilizer product amount and the labeled N, phosphate and potash quantities delivered over an area.Pea Gravel CalculatorCalculate pea gravel volume from area and depth, with optional supplier density and bag size.Plant Spacing CalculatorEstimate how many plants fit in a bed or area from plant spacing and square or staggered layout.Pond Liner CalculatorEstimate minimum rectangular pond-liner dimensions from pond length, width, maximum depth and edge overlap.Pond Volume CalculatorCalculate approximate pond water volume from rectangular, oval or circular plan dimensions and average depth.Potting Soil CalculatorEstimate potting-mix volume for round pots or rectangular planters and convert the total to bags.Rainwater Collection CalculatorEstimate rainwater harvesting volume from roof area, rainfall depth and collection efficiency.Raised Bed Soil CalculatorCalculate soil volume for raised beds, including multi-section or irregular layouts and optional bag counts.Seed & Row Spacing CalculatorEstimate row count and seed or plant positions from bed dimensions, row spacing and in-row spacing.Seed Starting CalculatorWork backward from a target transplant date to estimate when to start common vegetable seeds indoors.Sod CalculatorCalculate sod area and the number of rolls or pieces required from supplier coverage and waste, with turf terminology supported.Soil CalculatorCalculate soil volume from dimensions or area and depth, with cubic-yard, cubic-foot and cubic-meter conversions plus an optional bag-count estimate.Sprinkler CalculatorCalculate sprinkler-zone flow, water volume and equivalent application depth.Square Foot Garden CalculatorPlan a square-foot garden grid from bed dimensions and a chosen number of plants per one-square-foot cell.Stone CalculatorCalculate landscape or building stone volume from area and depth, with optional supplier density for weight.Topsoil CalculatorCalculate topsoil volume from area and depth, with optional supplier density and bag size.Tree Spacing CalculatorCalculate the number of trees and equal spacing along a straight planting run while staying at or below a selected maximum spacing.Watering CalculatorCalculate the water volume needed to apply a target depth over a measured area, with optional runtime from a known flow rate.