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Stair Calculator
Start elevation
ft · decimal
Target elevation
ft · decimal
Tolerance ±
ft · acceptable range
Tread depth
ft · run per step (11" = .917)
Step sizes to try
4"
5"
6"
7"
toggle which risers to consider
Δ elevation
–3.84
ft
direction
going down ↓
tolerance
±0.10
ft
within tol
— hits
Concrete steps
Three picks · closest landing · fewest steps · runner-up
side elevation · isometric
Full table — every step, every size
highlights:
within tol
best pick
Cinder blocks
8" standard blocks · stacked from lower elevation up
stacked wall · 8" blocks
Full table — 8" cinder block
highlight:
best pick
Recent calcs
no history yet — run a calc