教育

Free ACT Score Calculator — calculate your ACT composite score, section percentile ranks, SAT equivalent, STEM score, and college tier benchmarks. Supports 2025 and pre-2025 formats.

Free Cubic Equation Solver — instantly find all three roots (real and complex) of any ax³ + bx² + cx + d = 0 equation with step-by-step solution, discriminant analysis, factored form, Vieta's verification, and a polynomial graph.

無料の累積成績平均点（GPA）計算機 — 複数の学期にわたるGPAを追跡し、以前の単位履歴を含め、目標GPAに向けて計画し、成績分布を瞬時に視覚化します。

Free GMAT Focus Edition Score Calculator — estimate your composite score (205–805) from Quantitative Reasoning, Verbal Reasoning, and Data Insights section scores, with full percentile rankings and school competitiveness analysis.

Free Graduate Record Examination (GRE) score calculator — instantly convert raw scores to scaled scores, look up Verbal and Quantitative percentile ranks, get an AWA percentile, see your performance tier, compare your scores to field averages, and check GMAT concordance.

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Free Linear Equation Solver — solve single-variable equations (ax + b = c), slope-intercept form (y = mx + b), two-point form, and standard form (Ax + By = C) with step-by-step solutions, line graphs, and form conversions.

Free Matrix Determinant Calculator — compute the determinant of 2x2, 3x3, 4x4, 5x5, and 6x6 matrices with step-by-step solutions using the Sarrus rule and cofactor expansion.

Free matrix inverse calculator with step-by-step Gauss-Jordan elimination and adjugate method. Supports 2×2, 3×3, 4×4, and 5×5 matrices with fraction and decimal output.

無料の人口成長計算機 — 指数的、連続的、ロジスティック、線形の人口成長をモデル化します。最終人口、倍増時間を計算し、4つの数学モデルを使って成長のタイムラインを表示します。

Free Potential Energy (PE) calculator for gravitational, elastic, and electric potential energy. Solve for any variable with step-by-step solutions, planet gravity presets, and multi-unit output.

モノハイブリッド、ダイハイブリッド、トライハイブリッド交配のための無料パネットスクエア計算機。遺伝子型と表現型の比率、確率パーセンテージ、接合型ラベル、メンデリアン比率を瞬時に視覚化します。

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Free Digital SAT Score Calculator — estimate your Reading & Writing and Math scaled scores (200–800 each) and composite score (400–1600) from raw module answers. Includes percentile ranks, ACT concordance, college tier benchmarks, superscore calculator, and target score gap analysis.

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Free Velocity Calculator — solve for velocity, distance, time, acceleration, or displacement using the four core physics equations: basic speed (v=d/t), kinematic v=u+at, kinematic v²=u²+2as, and average velocity. Supports metric and imperial units with multi-unit output.