Orchard Calculators & Tools
Free, practical tools for a backyard orchard — time your harvest, space your trees, gauge your winter chill, project a yield, plan your pruning, and get your jam sugar ratio right.
Harvest Time Calculator
Estimate when a fruit will be ready to pick from your USDA hardiness zone, across apple, pear, peach, plum, cherry, fig, blueberry, and strawberry.
Tree Spacing Calculator
Work out in-row and row-to-row spacing from your fruit type and rootstock size, plus how many trees a given area can hold.
Chill Hours Calculator
Estimate winter chill hours from a typical daily low and high using the classic 32–45°F model, to check against a variety's chill requirement.
Fruit Yield Estimator
Project roughly how many pounds a tree of a given age and rootstock should bear, scaled to how many trees you have.
Pruning Calendar
Find the right dormant-season pruning window for a fruit type, in either the Northern or Southern Hemisphere.
Jam Sugar-Ratio Calculator
Convert a batch of fruit into the sugar (and lemon juice, if needed) a classic preserve recipe calls for, based on its natural pectin level.