StairEditorFree online stair calculatorOpen editor

Design for free, pay when you’re ready to build

No account needed to start. You only pay when a layout is worth turning into exact measurements and a construction PDF.

View a sample PDF

Free

Design and compare layouts without an account

$0
Start free
  • Straight, quarter-turn, and half-turn stairs
  • Live 2D + 3D drawings
  • Blondel comfort optimization
  • Comfort grade (score from 0 to 100)
  • mm or inches
  • Shareable URL for each design
  • No registration, no time limit
MOST CHOSEN

DIY Pass

Everything unlocked for one project for 72 hours

$19
  • Everything in Free
  • Exact measurements revealed
  • Construction PDF export
  • Cut-list starter with dimensions
  • Build-review checklist
  • 72-hour access from purchase

Pro Monthly

Unlimited projects and PDF exports

$29/month
  • Everything in Free
  • Unlimited unlocked measurements
  • Unlimited PDF exports
  • Individual step detail plans for straight stairs
  • DXF/CAD export (coming soon)
  • STL/OBJ export (coming soon)
  • XLS cutting list (coming soon)
  • Cancel anytime, keep your PDFs

Pro Annual

Best value: save $99 per year

$249/year
  • Everything in Pro Monthly
  • 28% cheaper than monthly
  • Priority support

Common questions

Can I cancel anytime?

Yes. Pro Monthly cancels instantly, no penalties. Pro Annual has a 14-day full refund window.

What payment methods work?

All major cards (Visa, Mastercard, Amex) via Stripe. Your card details never touch our servers.

What if I’m not happy?

You get a full refund within 14 days, no questions asked. Email us and we’ll process it the same day.

Is the free tier really free forever?

Yes. Designs, edits, and usage time are unlimited. You only pay when you want exact build measurements and PDF exports.

What happens after the 72h DIY Pass expires?

Your designs stay in the URL. You just lose access to exact measurements and PDF export. Buy another pass anytime you need it.

Your staircase plan is 5 minutes away

Start free. Unlock exact build measurements only when the design is worth keeping.

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