Ramp run length at 1:12
Enter the rise and get the total run length at the ADA maximum slope, or switch to a gentler 1:16 or 1:20 ramp. Slope percentage and angle are included.
ADA ramp calculator · 2010 ADA Standards §405
ADA wheelchair ramp calculator
A free wheelchair ramp calculator based on the 2010 ADA Standards §405. Enter the rise you need to overcome and get instant results: the required ramp length at 1:12, slope and angle, runs and landings, handrail and edge-protection requirements, a cost estimate and a printable spec sheet.
- Free, no account
- Instant results as you type
- 2010 ADA Standards §405 values
- Printable spec sheet
What the ramp calculator gives you
Everything you need to plan a compliant ramp, computed from the 2010 ADA Standards §405 and §505 — in your browser, nothing uploaded.
Runs and landings
Because a run may rise at most 30 inches (§405.6), tall rises are split into multiple runs, with a 60 inch landing at the top and bottom of every run (§405.7).
Handrails and edge protection
Handrails are required when a run rises more than 6 inches (§405.8) — 34 to 38 inches high, with 12 inch extensions (§505) — plus edge protection (§405.9).
Cost estimate and spec sheet
Add a cost rate for a rough estimate of the ramp run, then copy the summary or print a spec sheet with the ADA section references for your permit file.
How it works
Enter the rise
Measure from the lower surface to the top landing — not the number of steps — in inches or centimeters, and pick a slope and an optional cost rate.
Get the ramp plan
The calculator applies §405 as you type: run length, slope and angle, runs, landings, handrails, edge protection and clear width.
Print or copy the spec sheet
Copy a plain-language summary or print a spec sheet with the computed values and code references to share with a contractor or your local code authority.
| Rise | Ramp run length | Runs | Landings |
|---|---|---|---|
| 12 in | 12 ft | 1 run | 2 landings |
| 24 in | 24 ft | 1 run | 2 landings |
| 30 in | 30 ft | 1 run | 2 landings |
| 36 in | 36 ft | 2 runs | 3 landings |
| 60 in | 60 ft | 2 runs | 3 landings |
Need the rules rather than the numbers? Read theADA ramp requirements guide.
More free tools
Compliance help beyond the ramp calculator, built on the same standards-first approach.
Accessibility statement generator
Create a free accessibility statement for your website in minutes. W3C statement structure, WCAG 2.2 AA wording and the right legal reference for your country, with output in English, German, French and Spanish. No account, no tracking, everything runs in your browser.
European Accessibility Act guide
What Directive (EU) 2019/882 requires, who is covered, the exemptions for microenterprises, and what it means for your website — explained in plain English.
ADA ramp requirements guide
The numbers behind a compliant ramp in plain English: maximum slope, the 30 inch rise limit per run, 60 inch landings, handrails, edge protection and surfaces — with section citations to §405 and the residential IRC.
Why accessibility matters
The European Accessibility Act — Directive (EU) 2019/882 — applies across the EU since 28 June 2025. It requires consumer-facing products and services such as e-commerce shops, banking, transport, e-books and electronic communications to be accessible, and it is transposed into national law in each Member State.
Accessibility is not only a legal risk. Around one in four EU citizens lives with a disability or a long-term limitation, and accessible sites are easier to use, easier to find in search, and easier to maintain. An accessibility statement is the public, honest page that tells visitors what they can expect and how to report a barrier. It is the first thing an auditor, a customer or a compliance officer looks for.
AccessProof follows the W3C accessibility statement structure — commitment, conformance status, limitations, feedback, assessment approach and date — and cites the correct legal reference for your country.
Common questions
How do I calculate the length of a wheelchair ramp?
Multiply the rise by the slope ratio: ramp length = rise × ratio. At the ADA maximum of 1:12, every inch of rise needs 12 inches of run, so a 24 inch rise needs 288 inches (24 feet). Then split the rise into runs of no more than 30 inches (§405.6), with a landing at the top and bottom of every run (§405.7). The free calculator does the whole calculation, including slope, landings, handrails and a printable spec sheet.
What is the maximum slope for an ADA ramp?
1:12 — one inch of rise for every 12 inches of run, or 8.33% (§405.2). The cross slope must not be steeper than 1:48 (§405.3). Gentler slopes are allowed and easier to use. In existing sites with space limits, Table 405.2 permits steeper slopes only with a reduced maximum rise, and slopes steeper than 1:8 are prohibited.
Is the ramp calculator free?
Yes. The calculator is free, with no account, no email and no limits. It runs entirely in your browser: nothing you enter is uploaded, and you can copy the summary or print the spec sheet as often as you need.
Is the accessibility statement generator free?
Yes. The statement generator is free as well, with no account, no email capture and no limits. It produces a W3C-structured statement with WCAG 2.2 AA wording and your country’s legal reference, in English, German, French or Spanish.
Is an accessibility statement legally required?
It depends on your country and sector. In the EU, public sector websites must publish statements under the Web Accessibility Directive. Under the EAA, national laws can require providers to give accessibility information to consumers. A statement is the standard way to meet that expectation and it is always good practice.