Landscaping

Stump Grinding Calculator

Estimate stump grinding workload, mulch volume, and a price range from diameter, root flare, grinding depth, and site access. Prices are user entered; there is no national rate.

Stumps
in

Typically 1.2 to 1.3.

in
Site and pricing
ft
$
$

Total diameter

36 in

Workload

43.2 in

Mulch (low)

2.3 cu ft

Mulch (high)

3.2 cu ft

Estimated price

$172.8

Standard machine access should fit.

Assumptions

  • Workload inches = total diameter times root flare factor.
  • Mulch volume approximates each stump as a cylinder, then expands 1.3 to 1.8 times.
  • Price = workload times price per inch, floored at the minimum charge.
  • Utility locate (811 in the US) should be scheduled before machine work near lines.

How stump grinding is priced

Most stump grinding services quote by the diameter inch measured at ground level. The grinder actually removes wood a few inches beyond the visible trunk because the root flare widens out under the soil, so quotes usually multiply the visible diameter by a factor of 1.2 to 1.3 to reflect the real grinding width. Small stumps trigger a minimum charge that covers mobilization and setup.

Grinding depth matters

Six to eight inches below grade is enough if the spot will become lawn or a garden bed. Twelve inches or more is standard if you plan to plant a new tree, pour concrete, or lay pavers. Deeper grinding takes longer and produces more mulch, which usually raises the price.

What to do with the mulch

A medium stump produces several wheelbarrows of coarse mulch. It is fine for the base of shrubs or the back of a bed, but it should not be used as topsoil because it settles as it decomposes and can tie up nitrogen in the first season. Ask whether the crew will haul the mulch away; hauling is usually an add-on.

Frequently asked questions

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Educational estimates only. Not financial, tax, or legal advice.

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