Calculadora de Significância de Teste A/B — Ferramenta online grátis
Seu teste A/B é estatisticamente significante?
Calcule significância estatística de testes A/B. Valor-p, intervalos de confiança, tamanho de amostra. Para marketing e produtos.
🅰️ Control (A)
🅱️ Variant (B)
📚 Saiba mais
Free A/B test significance calculator — z-test for conversions
Calculate if your A/B test result is statistically significant. Two-proportion z-test with pooled variance. See p-value, confidence intervals, and clear verdict.
How to use this tool
- 1
Enter visitors + conversions
For both control (A) and variant (B): how many visitors and how many converted.
- 2
Check significance
See conversion rates, uplift %, p-value, confidence interval, statistical significance.
- 3
Interpret result
p < 0.05 = statistically significant. 95%+ confidence means the result isn't random noise.
Interpretation guide
- p < 0.01: very strong evidence against null (99%+ confidence)
- p < 0.05: standard "significant" threshold (95% confidence)
- p < 0.10: weak evidence — don\'t call it significant
- p ≥ 0.10: no significant difference detected
Frequently Asked Questions
What is statistical significance?
What sample size do I need?
What if my test is "not significant"?
Z-test vs t-test vs chi-square?
What's confidence interval?
Pontos-chave
- A/B Test Significance Calculadora is a free, browser-based calculator tool — is your a/b test result statistically significant?.
- 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 A/B Test Significance Calculadora
- Open the tool: Launch A/B Test Significance Calculadora on Ferramentaolis — no account or download needed.
- Enter your data: Paste text, enter values, or select a file directly in your browser.
- Get instant results: Everything is processed locally — results appear immediately.
- Copy or download: Save your output or share it. Bookmark for quick access next time.
A/B Test Significance 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)
| Recurso | Detalhes |
|---|---|
| Ferramenta | A/B Test Significance Calculadora |
| Categoria | Calculadora |
| Cadastro necessário | Não |
| Upload de arquivo | Nenhum — processado no navegador |
| Suporte mobile | Totalmente responsivo |
| Custo | Grátis para sempre |
Why Use A/B Test Significance Calculadora?
You should try A/B Test Significance Calculadora for a quick, private way to is your a/b test result statistically significant?. 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.