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Calculadora de Resistor para LED — Ferramenta online grátis

Resistor limitador de corrente para qualquer LED

Calcule resistor em série para LED. Insira tensão da fonte, tensão direta e corrente do LED. Mostra valores padrão. Sem cadastro.

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LED resistor calculator

Calculate series current-limiting resistor for any LED.

How to use this tool

  1. 1

    Enter source voltage

    Battery or power supply voltage.

  2. 2

    Enter LED specs

    Forward voltage (Vf) and current (If) from datasheet.

  3. 3

    See resistor

    Exact + standard value, power rating.

Frequently Asked Questions

LED forward voltage typical
Red: 1.8-2.2V. Yellow/Green: 2.0-2.3V. Blue/White: 3.0-3.5V. UV: 3.3-4.0V. Always check datasheet.
Formula
R = (V_source - V_led) / I_led. Use LED current typically 10-20 mA. Power dissipation = (V_source - V_led) × I.

Pontos-chave

  • LED Resistor Calculadora is a free, browser-based calculator tool — current-limiting resistor for any led.
  • Não 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 LED Resistor Calculadora

  1. Open the tool: Launch LED Resistor Calculadora on Ferramentaolis — 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.

LED Resistor Calculadora — Quick Facts

Preço
Grátis — sem limites, sem marca d’água, sem paywall
Privacidade
100% no navegador — nenhum dado é enviado a servidores
Plataforma
Qualquer navegador moderno — desktop, tablet ou celular
Categoria
Calculadora Ferramentas on Ferramentaolis
Offline
Works offline after first visit (Progressive Web App)
RecursoDetalhes
FerramentaLED Resistor Calculadora
CategoriaCalculadora
Cadastro necessárioNão
Upload de arquivoNenhum — processado no navegador
Suporte mobileTotalmente responsivo
CustoGrátis para sempre

Why Use LED Resistor Calculadora?

You should try LED Resistor Calculadora for a quick, private way to current-limiting resistor for any led. 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% Privacidade. Esta ferramenta funciona inteiramente no seu navegador. Seus dados nunca são enviados a nenhum servidor.