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Trap Berekenen — Gratis online tool

Optrede, aantrede, stringerlengte voor elke trap

Bereken trapoptrede, aantrede, stringerlengte en hoek. Bouwvoorschrift-conform. Voor terras-, kelder- en binnentrappen.

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Meer weten

Free stair calculator

Calculate stair risers, run, stringer. Code-compliant rise/run ratio.

How to use this tool

  1. 1

    Enter total rise

    Floor-to-floor vertical height (inches or cm).

  2. 2

    Enter run depth

    Desired tread depth per step (typical: 10-11 in).

  3. 3

    See step plan

    Number of risers, riser height, stringer length.

Frequently Asked Questions

What is a safe rise/run ratio?
IRC code: max 7¾ in rise, min 10 in run. Rise + run should equal 17-18 in total. Consistent rise between all steps is critical.
How to calculate stringer length
Stringer = √(total rise² + total run²). The hypotenuse of the right triangle formed by the staircase.

Belangrijkste punten

  • Stair Rekenmachine is a free, browser-based calculator tool — rise, run, stringer length for any staircase.
  • Nee signup, no downloads, no file uploads. Tools run in your browser; the few that need an outside service say so on the page.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Stair Rekenmachine

  1. Open the tool: Launch Stair Rekenmachine on Toololis — no account or download needed.
  2. Enter your data: Paste text, enter values, or select a file directly in your browser.
  3. Get instant results: Everything is processed locally — results appear immediately.
  4. Copy or download: Save your output or share it. Bookmark for quick access next time.

Stair Rekenmachine — Quick Facts

Prijs
Gratis — geen limieten, geen watermerk, geen paywall
Privacy
Wordt in je browser verwerkt. Tools die een externe dienst nodig hebben, vermelden dat op de pagina. Paginabezoeken worden geteld (Google Analytics).
Platform
Elke moderne browser — desktop, tablet of mobiel
Categorie
Rekenmachine Tools on Toololis
Offline
Works offline after first visit (Progressive Web App)
FunctieDetails
ToolStair Rekenmachine
CategorieRekenmachine
Aanmelden vereistNee
Bestand uploadenGeen — verwerkt in browser
Mobiel ondersteundVolledig responsive
KostenVoor altijd gratis

Why Use Stair Rekenmachine?

You should try Stair Rekenmachine for a quick, private way to rise, run, stringer length for any staircase. Processing happens in your browser and files are never uploaded; the few tools that need an outside service say so on the page.

On the other hand, dedicated APIs or desktop tools suit batch processing better. They also handle server-side automation. For everyday tasks, browser tools offer the best speed, privacy, and convenience.

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100% Privacy. Deze tool draait volledig in je browser. Je gegevens worden nooit naar een server geüpload.