Stump grinding cost, by inch and by depth

Grinding is sold per inch of stump diameter with a minimum charge, because mobilising the machine costs the same whether there is one stump or six. Depth and access move it from there.

Why these four inputs

InputWhat it changesRule of thumb
Diameter at gradeGrinding time, almost linearlyMeasure across the root flare, not the trunk
DepthTime and machine passesDeeper only if replanting or hardscaping
AccessSetup time before any cuttingA gate can double the setup line
CountSpreads the minimum chargeSix small stumps cost far less than six trips

Sound

Diameter is measured at ground level across the widest point including the flare. That is usually noticeably larger than the trunk you remember, which is why the invoice can surprise people who measured the tree instead of the stump.

What is inside the number

A two-person grind crew at the loaded rate derived from the BLS hourly mean of $26.91 (OEWS, May 2025), plus a stated $55 per hour for the grinder and trailer, then the same 1.6× to 2.1× overhead-and-margin band the rest of this site uses. The minimum floor reflects that nobody tows a grinder across town for twenty dollars.

The chip volume nobody quotes

The calculator estimates cubic yards of chip because that is the part people are unprepared for — ground wood fluffs to well over the volume it occupied. Leave it and it settles; haul it and it is a line item; spread it and it is mulch. Work out where it goes with the chip calculator.

If you are deciding between grinding and full excavation at all, start at the comparison — the depth question there is the one that matters.

Sources