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Free wheelchair ramp slope calculator and ADA ramp calculator online. Calculate ramp slope, ramp angle, length, and cost with ADA compliance. Our handicap ramp calculator provides accurate accessibility specifications for safe ramp design.
Last updated: February 2, 2026
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Vertical distance the ramp needs to overcome (step height, threshold, etc.)
Required Ramp Length
96.0"
Compliance Level:
ADA Compliant
✓ ADA Compliant
Slope
8.3%
Angle
4.8°
Landing Size (minimum)
60.0" × 60.0"
Handrails: Required
Both sides, 34-38" height, proper grip diameter
Material Estimates:
Estimated Construction Cost:
Recommendations:
ADA Compliance Tips:
Our ramp calculator online handles all types of accessibility and mobility ramp calculations
ADA Standard: 1:12 ratio (8.33%)
Max Rise: 30 inches per run
Applications: Commercial, public access
Also called: Handicap ramp slope per foot
8" rise = 96" length (8 feet)
Compliance: Federal ADA standards
Slope: Maximum 8.33% grade
Requirements: Handrails, landings
Also called: ADA ramp slope percentage
ADA Compliant: 1:12 ratio
ADA Standard: 4.76° maximum
Calculation: arctan(1/12)
Safety: Wheelchair accessible
Also called: Ramp degree calculator
1:12 slope = 4.76°
Gradient: 8.33% maximum
Formula: (rise/run) × 100
Accessibility: Mobility device friendly
Also called: Ramp incline calculator
1:12 = 8.33% gradient
Concrete: $75-120/ft
Aluminum: $100-200/ft
Wood: $50-100/ft
Also called: Wheelchair ramp estimate
8ft ramp: $600-1,600
Industrial: 1:6 to 1:8 ratio
Steeper: Allowed for equipment
Safety: OSHA compliant
Also called: Industrial ramp calculator
1:6 = 16.67% grade
1:12
8.33%
ADA Standard
1:10
10%
≤6" rise
1:8
12.5%
≤3" rise
1:6
16.67%
Industrial only
Our ramp calculator online uses federal accessibility standards to determine compliant ramp specifications. This ramp calculation tool ensures your ramp meets ADA requirements for slope, length, landings, and safety features while providing construction guidance.
Ramp Length = Rise Height × 12 (for 1:12 slope ratio)The 1:12 ratio means for every 1 inch of vertical rise, you need 12 inches of horizontal run. This creates an 8.33% grade that is safe for wheelchair users and meets federal accessibility standards.
Shows compliant slope ratios, landing requirements, and handrail placement
The Americans with Disabilities Act establishes specific requirements for ramp construction to ensure safe access for individuals using wheelchairs, walkers, and other mobility devices. These standards are federally mandated for public accommodations and many private facilities.
$75-120 per linear foot. Permanent, weather-resistant, requires professional installation.
$100-200 per linear foot. Lightweight, portable, good for temporary or residential use.
$50-100 per linear foot. Cost-effective, requires regular maintenance, suitable for residential use.
Need more accessibility tools? Try our draw length calculator for adaptive sports or explore ergonomic design calculators.
Get Custom Accessibility ConsultationRamp Calculation Result: 12-foot wheelchair ramp with 8.33% slope, fully ADA compliant
This ramp calculation meets all ADA requirements for wheelchair accessibility with proper slope, length, and safety features.
Concrete Ramp
$900-1,440
Aluminum Ramp
$1,200-2,400
Wood Ramp
$600-1,200
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Suggested hashtags: #ADA #Accessibility #WheelchairRamp #ADACompliance #UniversalDesign