教育學習

Compute weighted GPA on the US 4.0 scale with a six-band academic standing matrix; supports Academic Renewal toggle for retake exclusion. Browser-side only, no data uploaded.

Compute weighted course grades and Final Grade Needed reverse calculation on the US 13-band letter scale (A+ 97 / A 93 / A- 90 ... F <60). Browser-side only, no data uploaded.

Compute weekly study hours from credits, difficulty, and target GPA using the Carnegie Unit standard (2-3 hr per credit). Six-band load matrix: Light / Moderate / Standard / Heavy / Intense / Burnout. Browser-side only.

Three-mode percentage engine: X% of Y, X is what % of Y, and percent change from X to Y. Six-band real-world matrix covers tip, sales tax, discount, markup, growth, and CPI scenarios. Browser-side only.

計算閱讀速度（字/分鐘），估算完成時間，支援中英文文本

百分制、GPA、等第制、標準分數互相換算，支援多種評分系統

計算每分鐘字數(WPM)與準確率，評估打字速度等級

依SM-2演算法計算最佳複習間隔與記憶保留率，規劃學習排程

IQ 測驗計算機 — Profile B 計算器型 YMYL 工具。

占星計算機 — Profile B 計算器型 YMYL 工具。