Free study tools
Instant calculators for grades and test scores — no sign-up, no cost, and the math runs entirely in your browser. Built by COSMIQ, your free AI tutor.
GPA & Grades
- GPA Calculator — Turn letter grades and credit hours into an unweighted GPA, with the math shown step by step.
- Weighted GPA Calculator — Account for Honors and AP/IB rigor with a weighted GPA on the common +0.5 / +1.0 scale.
- Cumulative GPA Calculator — Roll several terms into one cumulative GPA, weighted by the credits in each term.
- High School GPA Calculator — Built for the 4.0 high school scale, with an optional Honors/AP weighting toggle.
- College GPA Calculator — Credit-hour weighted GPA with full +/- letter-grade support on the 4.0 scale.
- Final Grade Calculator — Work out the exact score you need on the final exam to reach your target course grade.
- Semester Grade Calculator — Blend quarters, midterms, and the final into one weighted semester grade.
- Test Grade Calculator — Enter total questions and how many were correct for an instant percentage and letter grade.
- Grade Average Calculator — Average any list of grades, equally or by weight, with the calculation shown.
- Target GPA Calculator — Work backward from a goal GPA to the average you need across your remaining credits.
Test Scores
- SAT Score Calculator — Total your EBRW and Math sections, superscore across dates, or convert raw scores with the official College Board table.
- ACT Score Calculator — Composite your sections, superscore across dates, or convert raw scores to scale scores (official Enhanced ACT table).
- AP Score Calculator — Pick your AP exam to estimate your 1–5 score from a composite, using that exam's own representative cut bands.
- PSAT Score Calculator — Convert your test scores into section scores, a total out of 1520, and your National Merit Selection Index.
- IB Score Calculator — Total your six subjects plus TOK/EE core points out of 45, with the IB Diploma pass conditions applied.
- GRE Score Calculator — Estimate your Verbal and Quant scaled scores (130–170 each) from raw correct, with a combined total.
- GMAT Score Calculator — Estimate your GMAT Focus total (205–805) from your three section scores: Quant, Verbal, and Data Insights.
- LSAT Score Calculator — Estimate your LSAT scaled score (120–180) from your raw number of correct answers.
- MCAT Score Calculator — Total your four section scores (118–132 each) for your overall MCAT score out of 528.
- ASVAB AFQT Calculator — Estimate your AFQT percentile from the four AFQT subtests using the official 2×VE + AR + MK formula.
Study Tools
- Pomodoro Timer — A focused study timer with customizable work and break intervals and long-break cycles.
- Study Schedule Builder — Divide your available study time across subjects by priority for a balanced session plan.
- Spaced Repetition Planner — Turn a learn date into a spaced-repetition review schedule on a proven interval ladder.
- Reading Time Calculator — Estimate how long a passage takes to read from its word count and a reading speed.
- Reading Speed Test — Time yourself reading a passage to measure your reading speed in words per minute.
- Words Per Page Calculator — Convert a word count to pages (or pages to words) for any spacing — single, 1.5, or double.
- Readability Calculator — Paste any text for its Flesch Reading Ease score and Flesch–Kincaid grade level.
Homework & Math
- Percentage Calculator — Solve percentages three ways — X% of Y, X is what % of Y, and percent change — with steps.
- Fraction Calculator — Add, subtract, multiply, or divide two fractions, simplified to lowest terms with steps.
- Ratio Calculator — Solve a proportion A : B = C : X for the missing term, with the cross-multiplication shown.
- Average Calculator — Find the mean, median, mode, and range of a list of numbers, with the steps shown.
- Percentage Change Calculator — Find the percent increase or decrease from an old value to a new one, with steps.
- Significant Figures Calculator — Count the significant figures in a number and round to any number of sig figs, with the rule shown.
- Scientific Notation Converter — Convert between standard form and scientific notation (a × 10ⁿ) in either direction, with steps.
- Rounding Calculator — Round any number to a chosen place value, with the deciding digit and the rule shown.