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Wheelchair Turning Space Clearance Checker

Check whether a floor space meets the ADA minimum diameter for a circular wheelchair turning space.

Computed in your browser — nothing you enter is uploaded. Figures are presented for United States against IRC 2024, and every formula is cited under regulatory standards below.

Last verified 2026-08-26 · v1.0.0

Market
Imperial · sales tax
5.25 ft
Schematic, drawn to the proportions you entered — not to scale on screen.

Limiting available dimension

5.25 ft

High confidence

This checks only the 60-inch (1.524m) circular turning space requirement of ADA Section 304.3.1 — it does not check the alternative T-shaped turning space option (Section 304.3.2), floor slope (max 1:48), surface requirements, or obstructions/protrusions into the space.

Required minimum diameter (ADA 304.3.1)
5 ft

At the values currently entered, the limiting available dimension works out to 1.60. The largest intermediate quantity is required minimum diameter (ada 304.3.1), at 1.52 m — check that step first if the total looks off. Figures are shown for United States, where IRC 2024 is the governing residential reference; switch the market above if you are building elsewhere.

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.

Preliminary estimate, not certified engineering. This tool produces an indicative quantity calculation for planning purposes only — it is not a certified structural analysis, a guaranteed material takeoff, or a substitute for building department approval. Always verify measurements on-site and have a licensed contractor or structural engineer review any load-bearing, code-sensitive, or safety-critical work before purchasing materials or starting construction. Spotted an arithmetic or standards error? Report it to contact@craftquantities.com with your inputs — confirmed fixes become pinned regression tests.

[Schema Verified] Computed in alignment with American Concrete Institute (ACI 318-19) formulas and International Residential Code (IRC 2024) spatial boundaries.

Regulatory standards & verification citations

  • Per the ADA 2010 Standards Section 304.3.1, a circular turning space requires a minimum diameter of 60 inches (1,525 mm / 1.524m) — verified against a regulatory-text mirror this session (up.codes), which confirmed the 60-inch/1525mm circular turning space figure directly.

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Frequently asked questions

What is the minimum diameter for a wheelchair turning space?
Per ADA 2010 Standards Section 304.3.1, a circular turning space requires a minimum diameter of 60 inches (1,525 mm / 1.524m).
Why does this checker use the smaller of width and depth?
A circular turning space needs the full required diameter in every direction, so the limiting (smaller) available dimension determines whether a circle of the required size actually fits.
Does a passing result mean the space is fully ADA-compliant?
No — this checks only the 304.3.1 circular turning space diameter. It does not check the alternative T-shaped turning space option (Section 304.3.2), floor slope (max 1:48), surface requirements, or obstructions/protrusions into the space.