HarvestSupplies.co
Free planning tool

Cannabis Harvest Calculator

Estimate a usable finished-weight range without pretending harvests are perfectly predictable.

Wet → dry estimatePlant-count modeSaves in your browser
Interactive planner

Cannabis harvest calculator

Use either a known wet harvest weight or a rough plant-count estimate. The result is deliberately shown as a range rather than a fake-precision single number.

Freshly harvested material before drying.
25% means 20 lb wet estimates to about 5 lb dry.
Optional allowance after dry-weight estimate.
Wider is more realistic when inputs are uncertain.
—central dry estimate
—lower planning bound
—upper planning bound

Saved in this browser

How to use the estimate

The useful question is not “exactly how much will I finish with?” It is “what capacity should I reserve so the harvest does not outrun the drying, curing or storage equipment?” A range is better for that job.

If you already know wet weight, use that mode. If harvest has not happened yet, switch to plant count and enter a conservative historical dry-weight-per-plant number. If you have no history, treat the output only as a rough capacity placeholder.

Turn the weight estimate into an equipment plan

Planning stepUse the estimate forRelated page
DryingReserve enough hanging or rack capacity for the upper end of the range.Drying space calculator
CuringSize total container volume after drying and trimming.Curing container size calculator
StorageAvoid buying containers based only on advertised outer volume.Harvest storage
TrimmingMatch manual or machine workflow to expected throughput.Bud trimmers
Planning note: moisture loss and finished weight can vary substantially. This tool is for equipment planning, not compliance reporting or inventory records.

Frequently asked questions

Is this a precise production forecast?

No. It is a planning estimate. Actual finished weight varies with cultivar, plant structure, harvest timing, moisture loss, trimming style and handling.

Why does the calculator ask for wet weight?

Wet-to-dry conversion is one of the simplest ways to estimate a finished inventory range once material has been harvested.

Does HarvestSupplies save my numbers?

Only in your current browser using localStorage. The calculator does not send the inputs to a server.