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THE FEUTEX TOOLKIT

Tree Ring Mulch with Trunk Clearance

Estimate mulch for a circular ring while leaving an unmulched central clearance.

Gardening workspace● Runs in your browser
01 Your input
02 Your result
View or copy raw result data
FormulaMulched ring area = Math.PI*(outer**2-clear**2); Whole bags = Math.ceil(Math.PI*(outer**2-clear**2)*depth*10/bag)

Made for real tasks

  • Estimate mulch for a circular ring while leaving an unmulched central clearance.
  • Compare an alternative set of measurements without uploading personal data.
Explore step-by-step workflows →

Worked example

Inputs

Outer ring radius
1.5 m
Unmulched radius
0.3 m
Mulch depth
5 cm
Bag volume
50 L

Expected results

Mulched ring area
6.785840132 m²
Whole bags
7 bags

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

How to use this tool

  1. Enter outer ring radius, unmulched radius, mulch depth, and bag volume in the displayed units.
  2. Calculate and use each labeled result for tree ring mulch with trunk clearance. Compare the result with a measured sample before committing materials.

Try this example

{
  "outer": 1.5,
  "clear": 0.3,
  "depth": 5,
  "bag": 50
}

Accuracy and scope

Quantity estimate only; enter clearance and depth appropriate for the plant and mulch. Settling is excluded.

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.