SettingsSettings for this calculationUS
The total length of the parking row available for stalls, excluding curbs, aisles, or obstructions.
Measure the clear length along the row where stalls will actually be striped, not the overall lot dimension.
The width of a single standard parking stall.
2.7 m (9 ft) is a common standard stall width; check your local zoning code or site design standard, since some jurisdictions require wider stalls.
Parking stalls per row
21 stalls
They open the calculator with your figures already in it
Parking Lot Stall Layout Calculator: 21 stalls — shown in imperial, US market. The link sets both, so the result they see is the one on your screen.
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How this was calculated
Formula source(s)
- Stall count = floor(usable row length ÷ standard stall width), the basic layout method for a single row of standard parking stalls — a partial stall at the end of the row cannot be striped, so the division rounds DOWN
Inputs used
- Usable Row Length
- 195 ft
- Standard stall width
- 9 ft
What this calculation does not cover
- Assumes the stalls sit square to the row. Angle the parking and each stall's bite out of the row length becomes the stall width divided by the sine of the angle - a 2.7 m (9 ft) stall consumes about 3.1 m (10.2 ft) at 60 degrees and about 3.8 m (12.7 ft) at 45 - so the same row holds roughly a seventh fewer stalls at 60 degrees and a third fewer at 45. The trade is a narrower drive aisle and one-way flow, so the count and the aisle have to be decided together rather than one after the other.
- The end stalls are not standard stalls. A stall running against a wall, a fence, a column or a raised landscape curb loses the door swing it would otherwise share with its neighbour, and site standards commonly widen it by about 0.3 m (1 ft) for exactly that reason, while a column inside a parking structure encroaches further again. Two widened ends are often the whole difference between the number here and the number that gets striped.
Estimated cost — your price
This site holds no price list for this material — local prices vary too much to publish honestly. Enter your supplier's price and the result is costed with it.
Computed in your browser — nothing you enter is uploaded. Presented in US customary units and US trade terminology. Where a formula follows a published standard, that standard and its edition are cited beside it on this page; where none governs, the page says so. Local amendments override model codes — verify against the code in force where you build.
Sources checked 2026-09-06 · in the site-wide review of 2026-09-06 · v1.0.1
Regulatory standards & verification citations1
- Stall count = floor(usable row length ÷ standard stall width), the basic layout method for a single row of standard parking stalls — a partial stall at the end of the row cannot be striped, so the division rounds DOWN
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