Wheelchair Ramp Calculator
Ramp length, landings and slope from your rise, with the numbers checked against ADA geometry.
Turn these numbers into a build plan.
- 24.0 ft run
- 2 landings
- $2,142 est. cost
Cut list: Wheelchair Ramp Calculator
- Ramp run24.0 ft
- Sloped sections1
- Landings, 5 ft each2
- Total length34.0 ft
- Grade8.3% (4.8 degrees)
- HandrailsBoth sides
- [ ] Deck boards25
- [ ] Decking, 5/4 x 6 x 12 ft
- [ ] 2x8 treated joists
- [ ] 4x4 treated posts
- [ ] Handrail stock
Checked against ADA Standards 2010, section 405.2; ADA Standards 2010, section 405.5; ADA Standards 2010, section 405.6; ADA Standards 2010, section 405.7; ADA Standards 2010, section 405.8. These rule values have not been reviewed by a licensed professional. Your local code and inspector decide, so verify with your building department.
Show your build
Finished the wheelchair ramp? Snap a before and after. The photo maker lines them up into one image you can post, and a free Blueprint account keeps the photos with your measurements and materials.
Wheelchair ramp, 34 ft total
24.0 ft of ramp at 1:12 with 2 landings. Checked against ADA 2010 section 405, not reviewed by a licensed professional. Verify with your building department.
- Materials
- $2,142
- Time
- 2 weekends
- Level
- Advanced
- 1
Check local rules
Ask your building department about permits, setbacks and accessibility rules.
- Rules confirmed
- 2
Lay out the ramp
Stake the run and landings on the ground.
- Layout staked
- 3
Set posts
Dig and set posts below the frost line where required.
- Posts plumb
- Run
- 24.0 ft
- Landings
- 2
- Est. cost
- $2,142
5 steps · 4 tools · 4 materials
2 more steps, the full tool list and a shopping list you can check off as you go.
Your plan is 60% built. Save it.
3/5Wheelchair ramp, 34 ft total
Finished in 2 weekends · $2,142 DIY
Built for your run of 24.0 ft. Your first plan saves free. No card needed.
Or save it with just your email
We send a link; open it and this plan is your first project. Your first plan saves free. No card needed.
How to calculate wheelchair ramp length
Measure the rise from the ground to the top of the threshold, not the step count.
- Measure the rise. Hold a level from the threshold and measure down to where the ramp will end.
- Pick a slope. 1:12 is the ADA maximum; gentler is easier to self-propel.
- Compute the run. Rise in inches x slope ratio = run in inches.
- Add landings. 5 ft at top and bottom and at each break, with a break at least every 30 in of rise.
- Verify locally. Local accessibility and building rules decide. Ask your building department.
Ramp length at 1:12
| Rise | Run | Landings | Total length |
|---|---|---|---|
| 12 in | 12 ft | 2 | 22 ft |
| 18 in | 18 ft | 2 | 28 ft |
| 24 in | 24 ft | 2 | 34 ft |
| 30 in | 30 ft | 2 | 40 ft |
| 36 in | 36 ft | 3 | 51 ft |
| 48 in | 48 ft | 3 | 63 ft |
Frequently asked questions
How long should a ramp be for a 24 in rise?
How wide should a ramp be?
Does my home ramp have to meet ADA?
When are handrails needed?
Can a ramp be steeper than 1:12?
Related calculators
All calculatorsDeck Calculator
Full deck material list: boards, joists, beams, posts, concrete, railing and cost
Stair Calculator
Rise and run, stringer length and angle, landings, deck stairs, code checks and a cut list
Garden Planner
Lay out beds and paths, choose what to plant where, and get seed counts, materials and a planting schedule
Related cheat sheets
All cheat sheetsDeck Building Cheat Sheet
Deck sizing tool, IRC 2021 joist and beam span tables by species, footing size, ledger fastening, stair calculator, code diagrams and FAQs
Fence Building Guide
Post spacing, concrete footing requirements, board patterns, and gate construction
How to Refinish a Deck
Condition quiz, deck stain calculator with cost, weekend timeline, sanding and application, which-stain matrix, mistakes and FAQs