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Free stair handrail height calculator. Get recommended, min, and max height (in or cm) plus total stair rise from step count and riser size. Pair with the ramp calculator for accessible routes without stairs.
Last updated: May 24, 2026
Need clear width at the landing? Doorway width calculator
Recommended Height
36 in
Minimum Height
34.1 in
Maximum Height
38 in
Total Stair Rise
84 in
Public/commercial stairs often require stricter consistency and code verification.
Verify continuity, extensions, and graspability requirements during final code review.
We can build and embed a custom version of Stair Handrail Height Calculator for your brand and workflow.
Answers: how high should a stair handrail be, ADA handrail height in inches and cm, and total vertical rise for your flight.
Public default 34.1–36.0–38.0 in — measured from nosing to gripping surface top.
Switches cm anchors (89 vs 91.5 cm recommended) — not derived from step count.
Default 12 × 7 in = 84 in (213.4 cm) — for guards, landings, and headroom checks.
Default: 12 steps · 7 in rise · public → recommended 36 in · range 34.1–38 in (86.5–96.5 cm) · total rise 84 in.
Recommended
36 in
Minimum
34.1 in
Maximum
38 in
Total Rise
84 in
| Project | Recommended | Min | Max | Note |
|---|---|---|---|---|
| Public / commercial | 91.5 cm (36.0 in) | 86.5 cm (34.1 in) | 96.5 cm (38.0 in) | Center target 36 in — common ADA Chapter 4 handrail band |
| Residential | 89 cm (35.0 in) | 86 cm (33.9 in) | 97 cm (38.2 in) | Slightly lower center — still verify IRC/local amendments |
| Topic | Typical requirement | In this tool |
|---|---|---|
| Height above nosing | 34 in min – 38 in max (86.5–96.5 cm) | Vertical to top of gripping surface |
| This calculator public range | 34.1 – 38.0 in | Matches 86.5 – 96.5 cm stored values |
| Graspability (separate check) | 1¼–2 in diameter (32–51 mm) or equivalent | Not computed here — verify profile |
| Extensions (separate check) | Often 12 in min at top/bottom (ADA 505) | Horizontal beyond top/bottom riser |
| Steps | Riser | Total rise | Handrail note |
|---|---|---|---|
| 12 | 7 in | 84 in (213.4 cm) | Height range unchanged — rise scopes guards/landings |
| 14 | 7.5 in | 105 in (266.7 cm) | Residential example in worked scenarios |
| 15 | 17.8 cm | 267 cm | Metric public default-style flight |
| 4 | 7 in | 28 in (71.1 cm) | Short porch stair — same handrail band |
Handrail height targets are fixed planning values by project type; stair geometry computes vertical rise only. Confirm extensions, graspability, and guards with your adopted code.
riseCm = risePerStep × 2.54 (if imperial) else risePerStepstairRunHeight = stepCount × riseCm → display in in or cmhandrail band = public 86.5–91.5–96.5 cm · residential 86–89–97 cm36 in recommended · 34.1–38 in · rise 84 in (213.4 cm).
35 in recommended · 33.9–38.2 in · rise 105 in — handrail band lower center than public.
91.5 cm recommended · 86.5–96.5 cm · rise 267 cm.
89 cm · rise 216 cm · range 86–97 cm.
Rise only 28 in — handrail still 36 in recommended (34.1–38 in).
Rise 112 in — same 36 in handrail target as 12-step default.
89 cm recommended · rise 175 cm.
Share with architects, contractors, facility managers, and accessibility consultants scoping stair upgrades.
Suggested hashtags: #Accessibility #Handrail #StairSafety #ADA #UniversalDesign