ADA Parking Calculator

Calculate required accessible parking spaces and van-accessible spaces per ADA 2010 Standards.

Inputs

Total Parking Spaces

Facility Type (1=General, 2=Medical, 3=Outpatient)

Tab to move between fields

Results

Accessible Spaces Required

Van-Accessible Spaces

Access Aisle Width (inches)96"

How to Use This Calculator

Enter the Total Parking Spaces count for your lot or structure.
Set Facility Type: 1 for general use (ADA sliding scale), 2 for medical/outpatient (20% required), or 3 for specialized rehabilitation (10% required).
Read Accessible Spaces Required — this is the legally mandated minimum number of accessible stalls.
Note Van-Accessible Spaces — at least 1 in every 6 accessible spaces must accommodate vans with 96-inch access aisles.
Use Access Aisle Width (inches) to verify lane striping meets the 96-inch van-aisle standard in your design.

How the result changes with Total Parking Spaces

Total Parking Spaces	Accessible Spaces Required	Van-Accessible Spaces
10,001	111	19
35,001	361	61
65,000	660	110
90,000	910	152

What each input means

Total Parking Spaces: Total number of parking spaces in the lot or structure
Facility Type (1=General, 2=Medical, 3=Outpatient): General facilities use ADA sliding scale; medical/rehab facilities require higher percentages

How this is calculated

Worked example, using the default values

Identify Input Parameters
Total Parking Spaces = 100, Facility Type (1=General, 2=Medical, 3=Outpatient) = 1 = 2 input(s) provided
Calculate Accessible Spaces Required
4 = 4
Calculate Van-Accessible Spaces
Van-Accessible Spaces
1 = 1
Calculate Access Aisle Width
Access Aisle Width
96 = 96

Engine last updated August 5, 2026. Checked against 2 independently-derived tests — how we verify calculators.

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