Student start page

Student math tools for grades, algebra, stats, and formulas.

Start with the exact school problem you have: what you need on your final, what your test score means, how to find slope, or which formula to use next.

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285

calculators

signups needed

steps

when the math needs context

Grade planning tools

Finals week, test scores, category weights, and GPA checks.

Grade CalculatorCalculate a class grade from points earned, points possible, extra credit, and a target percentage.Final Grade CalculatorFind the score you need on a final exam or project your course grade from a known final score.Test Grade CalculatorCalculate a test percentage and letter grade from points earned, points missed, or a target grade.Weighted Grade CalculatorCalculate a weighted course grade from category scores and weights, or find the score needed on remaining weighted work.GPA CalculatorCalculate semester GPA, update cumulative GPA, or find the future grade average needed to reach a target GPA.Grade Percentage CalculatorConvert points earned or points missed into a grade percentage, decimal, simplified score fraction, and letter grade.

Algebra tools

Slope, quadratics, fractions, exponents, systems, ratios, and proportions.

Slope CalculatorFind slope from two points or solve a missing coordinate from a known slope. Includes equations, intercepts, grade, graph, and step-by-step work.Quadratic Formula CalculatorSolve ax^2 + bx + c = 0 with the quadratic formula, discriminant, roots, and vertex values.Fraction CalculatorAdd, subtract, multiply, divide, simplify, compare, or convert decimals to fractions with steps and visual fraction bars.Exponent CalculatorCalculate powers with positive, negative, and decimal exponents while showing the exponent rule used.System of Equations CalculatorSolve a 2x2 linear system with elimination/determinant steps for x and y.Ratio CalculatorSimplify ratios, compare two quantities, and find unit rates with clear proportional reasoning steps.Proportion CalculatorSolve a missing value in a proportion using cross multiplication with clear substitution steps.

Statistics tools

Summaries and probability checks for homework, labs, and quick reports.

Mean Median Mode Range CalculatorFind mean, median, mode, range, count, sum, minimum, and maximum for a list of numbers with sorted values and steps.Standard Deviation CalculatorCalculate sample or population standard deviation, variance, mean, and z-score-ready summary statistics from a data list.Z-score CalculatorCalculate z-score, percentile estimate, and distance from mean using value, mean, and standard deviation.Probability CalculatorCalculate event probability, complement probability, odds, and repeated independent event probabilities.Sample Size CalculatorEstimate survey sample size from confidence level, margin of error, and expected proportion.

Reference and support tools

Use these when you need a general calculator, a formula, or a unit conversion before solving.

Student calculator pack

A classroom-ready launchpad for grade, GPA, algebra, formulas, statistics, and conversion tools.

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Scientific calculator

Use trig, logs, roots, powers, pi, and e without leaving the browser.

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Formula sheet

Look up algebra, geometry, and trig formulas before using a calculator.

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Unit converter

Convert measurements before plugging numbers into formulas.

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