Calculator Performance Benchmark

Estimate Time to Interactive, Core Web Vitals, and performance score based on bundle size, API calls, and chart components.

JS bundle size (KB)

API calls on load

Avg API latency (ms)

Chart components

Connection speed (Mbps)

Tab to move between fields

Time to Interactive (ms)

243

LCP (ms)272

FID (ms)55

Performance score (0-100)95

Total download (KB)230

Download time (ms)117

How to Use This Calculator

Enter JavaScript bundle size (KB), number of API calls on load, and average API latency (ms).
Set number of chart components and user connection speed (Mbps).
Review Estimated TTI (ms), LCP (ms), FID (ms), and Performance Score (0–100).
Target TTI under 3,500 ms and LCP under 2,500 ms for strong Core Web Vitals.

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