Free tools
Free Study Tools & Calculators
Simple, free tools to help you plan and hit your goals. Each one runs right in your browser, needs no signup, and stores nothing - more on the way.
SAT Score CalculatorAdd your Reading & Writing and Math scores for your total and superscore, and see the gap to your target.Statistics CalculatorPaste your numbers for the mean, median, mode, range, variance, and standard deviation.Z-Score CalculatorTurn a value into a z-score with its percentile, and get left, right and central normal probabilities.Triangle CalculatorFind a triangle's area, perimeter, and type from its sides, or the hypotenuse from two legs.Geometry Proof PracticeWork through six classic two-column proofs - you supply the reason for each step and check your answers instantly.ACT Score CalculatorTurn your four ACT section scores into your composite, and see how far you are from a target.GPA CalculatorEnter your grades and credit hours to calculate your GPA on the standard 4.0 scale.Final Grade CalculatorFind out exactly what you need to score on your final exam to hit your target grade.
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Work 1-on-1 with a vetted iTutorzz tutor who builds prep around your target - your first trial lesson is free.