Educação

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.

Calculadora gratuita de Média de Notas Cumulativa (GPA) — acompanhe seu GPA ao longo de vários semestres, inclua histórico de créditos anteriores, planeje um GPA alvo e visualize instantaneamente sua distribuição de notas.

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.

Calculadora de crescimento populacional gratuita — modele o crescimento populacional exponencial, contínuo, logístico e linear. Calcule a população final, o tempo de duplicação e visualize linhas do tempo de crescimento com quatro modelos matemáticos.

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.

Calculadora de Quadrado de Punnett gratuita para cruzamentos monohíbridos, di-híbridos e tri-híbridos. Visualize instantaneamente as proporções de genótipos e fenótipos, porcentagens de probabilidade, rótulos de zigose e proporções mendelianas.

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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.