Lighthouse Score Calculator
Estimate your Lighthouse performance score from individual metrics using official audit weights.
How to Use the Lighthouse Score Calculator
- Enter FCP, Speed Index, and LCP in milliseconds.
- Enter TTI and TBT in milliseconds.
- Enter CLS as a decimal value.
- Click Calculate for weighted performance score.
使用例
- •Lighthouse audit preparation
- •Web performance benchmarking
- •Performance regression monitoring
計算式
Score = FCP×10% + SI×10% + LCP×25% + TTI×10% + TBT×30% + CLS×15%
よくある質問
How accurate is this calculator?
Results are based on standard industry formulas and are suitable for preliminary estimates.
What units are used?
Standard IT units (requests/sec, ms, %, USD) are used unless otherwise noted.
Is it free?
Yes, all calculators are completely free.