Garden
Soil volume, fertiliser doses, spacing and frost dates, keyed to the region you are actually planting in. 10 tools, including Compost Calculator (C:N Ratio), Fertilizer calculator, Frost Date Calculator and Grass seed calculator. All free, with no account and nothing to install.
Compost Calculator (C:N Ratio)Mix greens and browns and get the carbon-to-nitrogen ratio of your pile, with tips to hit the ideal 25–30:1.Fertilizer calculatorEstimate how much fertilizer you need to cover a lawn or garden area.Frost Date CalculatorEstimate the average last spring and first fall frost dates and growing-season length from your USDA zone.Grass seed calculatorHow much seed to sow: each grass type has its own recommended seeding rate per 1,000 sq ft, and overseeding an existing lawn takes about half of a new seeding. Enter the area and get the pounds needed for a new lawn and for overseeding.Lawn Fertilizer CalculatorFind how much lawn fertilizer to spread from your lawn area, nitrogen rate and the bag's N-P-K analysis.Mulch calculatorWork out the volume of mulch and number of bags for a garden bed.Fertilizer Calculator (NPK)Work out how much fertilizer to apply from your bed area, target nutrient rate and the N-P-K grade on the bag.Plant spacing calculatorWork out how many plants fit in a bed from the area and spacing.Raised Bed Soil CalculatorCalculate how much soil to buy for a raised bed from its size, fill ratio and settling, split by mix recipe.Topsoil CalculatorEstimate the volume and weight of topsoil needed to cover an area to a given depth.