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Cirkel Rekenmachine — Gratis online tool

Straal, diameter, omtrek, oppervlakte vanuit elke invoer

Bereken elke cirkeleigenschap vanuit een andere. Straal, diameter, omtrek, oppervlakte — direct afgeleid. Gratis zonder aanmelding.

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Meer weten

Free circle calculator

Enter any one property of a circle — we calculate the rest.

How to use this tool

  1. 1

    Enter any one value

    Radius, diameter, circumference, or area.

  2. 2

    All others auto-fill

    Any property of a circle uniquely determines the others.

Frequently Asked Questions

Formulas used
d = 2r, C = 2πr, A = πr². Any one value gives us r, and from r all the others.

Belangrijkste punten

  • Circle Rekenmachine is a free, browser-based calculator tool — radius, diameter, circumference, area from any input.
  • Nee signup, no downloads, no file uploads — your data stays on your device.
  • Works on desktop, tablet, and mobile. Install as a PWA for offline access.

How to Use Circle Rekenmachine

  1. Open the tool: Launch Circle 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.

Circle Rekenmachine — Quick Facts

Prijs
Gratis — geen limieten, geen watermerk, geen paywall
Privacy
100% in de browser — geen data verlaat je apparaat
Platform
Elke moderne browser — desktop, tablet of mobiel
Categorie
Rekenmachine Tools on Toololis
Offline
Works offline after first visit (Progressive Web App)
FunctieDetails
ToolCircle Rekenmachine
CategorieRekenmachine
Aanmelden vereistNee
Bestand uploadenGeen — verwerkt in browser
Mobiel ondersteundVolledig responsive
KostenVoor altijd gratis

Why Use Circle Rekenmachine?

You should try Circle Rekenmachine for a quick, private way to radius, diameter, circumference, area from any input. All processing happens in your browser. Your files and data never leave your device. According to web.dev, client-side processing is the gold standard for privacy.

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.