THE FEUTEX TOOLKIT

Seed Tray and Spare Cell Planner

Plan plug trays with reserved empty cells and extra transplants.

Gardening workspace● Runs in your browser

01 Your input

PlantsplantsSpares%Cellscells/trayEmpty cellscells/tray

02 Your result

View or copy raw result data

Result data

Formula

Trays = Math.ceil(Math.ceil(plants*(1+spares/100))/(cells-empty_cells)); Seeds = Math.ceil(plants*(1+spares/100)); Unused = Math.ceil(Math.ceil(plants*(1+spares/100))/(cells-empty_cells))*(cells-empty_cells)-Math.ceil(plants*(1+spares/100))

Worked example

Inputs

Plants: 200 plants
Spares: 15 %
Cells: 72 cells/tray
Empty cells: 4 cells/tray

Expected results

Trays: 4 trays
Seeds: 230 cells
Unused: 42 cells

Load the example in the workspace to reproduce these results. Display rounding does not change the underlying calculation.

How to use this tool

Enter the measured quantities and your own planning assumptions.
Review all calculated outputs and the stated limitations.

Try this example

{
  "plants": 200,
  "spares": 15,
  "cells": 72,
  "empty_cells": 4
}

Accuracy and scope

Planning estimate using the assumptions you enter; verify dimensions and real operating constraints before purchase or use.

Is my data uploaded?

This tool runs locally in your browser. Input and output are not sent to a processing server. Copy or download your result before leaving the page.