The per-inch math behind every Wisconsin stump grinding quote. Plug in your stump diameter, and you'll know what to expect within $20.
Real pricing for Lake Country residential stumps. Includes the per-inch math + the typical out-the-door price after the $150 minimum and small extras.
| Stump diameter | Per-inch math ($4/in) | Typical total | Notes |
|---|---|---|---|
| 8" | 8 × $4 = $32 → minimum $150 | $150 | Tiny — minimum kicks in |
| 10" | 10 × $4 = $40 → minimum $150 | $150 | Still under minimum |
| 12" | 12 × $4 = $48 → minimum $150 | $150 | Threshold case |
| 14" | 14 × $4 = $56 → minimum $150 | $150–$160 | Most common Lake Country job |
| 16" | 16 × $4 = $64 → minimum $150 | $160–$180 | Just past minimum |
| 18" | 18 × $4 = $72 | $170–$200 | $150 minimum + extras for larger size |
| 20" | 20 × $4 = $80 | $180–$220 | Mid-size residential |
| 24" | 24 × $4 = $96 | $220–$280 | Larger residential |
| 30" | 30 × $4 = $120 | $280–$380 | Hardwood premium kicks in |
| 36" | 36 × $4 = $144 | $380–$520 | Heritage stump territory |
| 48" | 48 × $4 = $192 | $520–$800 | Custom quote — multi-day possible |
Above 48", quotes become custom — the grinder may need multiple sessions, and access logistics dominate the price.
Per-inch pricing is the industry standard because diameter is what determines grinding time on standard-depth (4–6 inch) jobs. Hourly pricing would penalize the operator for using better equipment — a slower machine making the same stump take 90 minutes shouldn't cost more than a faster machine doing it in 30 minutes. Per-inch is fair to both sides.
The math behind the formula: a typical 14-inch stump produces about a wheelbarrow of chips and takes 25–35 minutes including setup and cleanup. At $200, that's roughly $400/hour of operator-and-machine time. Subtract drive time, fuel, tooth wear, and insurance overhead, and the operator's net works out to a reasonable hourly rate. Grinders pricing significantly below $3/inch are usually uninsured or new operators undercutting the market for portfolio.
Most Wisconsin stump grinders use the formula: stump diameter (inches) × $3–$4 per inch, with a $150 minimum. Diameter is measured at ground level on the widest part of the stump, including the root flare. A 14-inch stump (most common residential size in Lake Country) lands at $150–$200. The minimum exists because mobilization costs (loading, driving, setup) are roughly the same regardless of stump size.
In Lake Country and most of Waukesha County, the minimum charge is $150. This covers travel time (typically 15–30 minutes each way), unloading the grinder, setup, basic cleanup, and packing up. A 6-inch stump and a 14-inch stump both hit the minimum charge — the 14-inch is just better value per inch ground.
Because grinders work horizontally across the top of the stump, not vertically. A 14-inch tall stump and a 4-inch tall stump of the same diameter take roughly the same time to grind down to grade. What changes the volume is diameter — every additional inch of diameter is more wood for the cutting wheel to chew through. Height above grade just gets cut flush by chainsaw before grinding starts.
Sometimes, especially over 24" diameter. Oak, hickory, and old maple grind 30–50% slower than pine, willow, or cottonwood. Some Lake Country grinders charge a flat $0.50/inch hardwood premium ($4.50/inch instead of $4); others price by time when stumps exceed 24". For a 14-inch oak or maple, the per-inch price is usually the same as softwood. For a 36-inch oak, expect a modest premium.
Common add-ons in Lake Country: chip haul-away (+$5/inch), topsoil + grass seed restoration (+$10/inch), deep grinding for replanting (+$30–$80 flat or +$1–$2/inch), backyard-only access through a narrow gate (+10–25%), and lakefront/shoreland slope premiums (+10–20%). The base $3–$4/inch covers grinding to 4–6 inches below grade with chips left on-site.
Measure at ground level across the widest visible part of the stump, including the root flare. Use a tape measure or piece of string + ruler. If the stump has a noticeable bulge at the bottom (oaks and maples often do), include that in the measurement — that's the part the grinder has to cut through. Round up to the nearest inch. A photo with a tape measure in frame is the easiest way to send a quote request — most Lake Country grinders quote off photos in 5–10 minutes.
Hiring Lake Country Stump Grinding starts with a free written quote. Send a photo + ground-level measurement, get pricing back within 60 minutes. $3–$4 per inch, $150 minimum, no surprise add-ons.
Most quotes back within 1 business hour, 7am–7pm Mon–Sat. We'll text you a price estimate.
Last updated: May 8, 2026.
