Garden Tools & Calculators
Free calculators and planners for gardeners — watering, planting, composting, soil, and fertilizing.
Harvest Yield Estimator
Estimate your vegetable harvest in pounds and kilograms by crop and number of plants
Mulch Calculator
Calculate how much mulch you need — cubic feet, cubic yards, bags, and weight — for any bed
Rainwater Harvesting Calculator
See how many gallons of rainwater your roof can harvest for the garden, by area and rainfall
Grow Light Calculator
Find the right grow-light wattage for indoor plants by area, growth stage, and light type