Education calculators
Tools for students and teachers. Grades: GPA calculator, Grade calculator, Curve grade calculator and Letter grade converter. Science: Molarity calculator, Molar mass calculator, pH calculator, Periodic table and Ideal gas law calculator. Classroom material: Quiz maker, Flashcard maker, Math worksheet generator, Crossword puzzle maker and Word search generator. Planning and diagrams: Study planner, Gantt chart maker, Mind map maker, Pie chart maker and Venn diagram maker.
- GPA calculatorSemester and cumulative GPA on the 4.0 scale from credits and letter grades, with optional weighting.
- Grade calculatorWeighted course grade from categories, or the final exam score you need for a target grade.
- Study plannerA day-by-day study schedule from the exam date, topics and daily hours, with review days.
- Curve grade calculatorCurve a score by adding points, lifting the top score to the maximum, the square root method or a bell curve to a target mean and standard deviation.
- CGPA to percentageCGPA × 9.5 for CBSE, an editable multiplier for other boards, percentage back to CGPA and a rough 4.0 GPA estimate.
- Test score calculatorTest points to percent and letter grade, with an editable scale and a full grading table.
- GPA scale converterRescale a GPA between 4.0, 5.0, 10-point and percent by straight proportion. A rough guide; institutions define their own conversions.
- Letter grade converterPercent to letter grade and 4.0 GPA points, or back, on the common US scale.
- Rubric score calculatorTurn rubric levels and criterion weights into a weighted score and a percentage. Up to five criteria and three to six levels.
- Attendance calculatorAttendance percentage, classes you can still miss, or must attend, to reach a target such as 75%.
- Speaking time calculatorEstimate how long a speech takes from its word count at slow, average and fast paces, or at your own words-per-minute rate.
- Generation finderFind the generation for any birth year, with its year range and the source of the range.
- Reading speed testTime yourself on a 300-word passage, answer three questions and see your WPM and comprehension.
- Birthstone finderBirthstone, alternate stones and birth flowers for each month, on the modern US list.
- Percentile calculatorPercentile, z-score, T score, stanine, IQ-scale and NCE from a score with its mean and SD, or the score for a percentile.
- Flashcard makerBuild decks of flashcards, flip through them in study mode and import or export as tab-separated text.
- Periodic tableAll 118 elements in a table and a searchable list, with atomic number, weight, group, period, block and category.
- Coulomb's law calculatorFind the force between two point charges, or the distance or charge that gives a known force.
- Crossword puzzle makerTurn a list of words and clues into a numbered, printable crossword with an answer key.
- Dilution calculatorFind the missing value in C1V1 = C2V2 and how much solvent to add to a stock solution.
- Free fall calculatorEnter a fall time, a height or an impact speed and get the other two for an object dropped from rest.
- Half-life calculatorSolve N = N₀ × (½)^(t/T) for any one of the amount remaining, starting amount, time or half-life.
- Handwriting practice sheetsPrintable handwriting worksheets with top, middle and base guide lines, traced text and blank copy rows.
- HangmanGuess the hidden word letter by letter with six misses allowed. Use a random word or set your own.
- Ideal gas law calculatorFind pressure, volume, amount of gas or temperature from PV = nRT, with common units.
- Kinetic energy calculatorSolve E = ½mv² for energy, mass or speed, with metric and imperial units and momentum shown.
- Lesson plan generatorA printable lesson plan with objectives, materials and a timed outline of stages, with a clock time for each stage.
- Maze generatorPrintable mazes of the size you choose, with a seed to recreate them and a solution you can show or hide.
- Molar mass calculatorEnter a chemical formula, with brackets and hydrates, and get its molar mass and composition by mass.
- Molarity calculatorSolve M = mass ÷ (molar mass × volume) for molarity, solute mass or solution volume.
- Number line generatorPrintable number lines with the range, step, labelled ticks and marked points you choose, or blank for students.
- Pendulum period calculatorSolve T = 2π√(L/g) for period, length or gravity, with an optional correction for large swings.
- pH calculatorEnter pH, pOH, [H⁺] or [OH⁻] and get the other three at 25 °C, with acidic, neutral or basic.
- Quiz makerWrite your own multiple-choice quiz, take it and get a score with the right answers. Saved in your browser; export as JSON.
- Seating chart makerSeat students or guests at tables evenly, randomly or in your order, with optional pinned seats, ready to print.
- Spelling practiceHear each word read aloud, type it and get your score, with word lists by level or your own list.
- Sudoku generatorPrintable 9 by 9 sudoku puzzles with a proven single solution, three levels and a solution page.
- Unit circle calculatorAngle in degrees or radians to sin, cos, tan (exact for multiples of 30° and 45°), quadrant and reference angle, with a drawing.
- Math worksheet generatorPrintable arithmetic worksheets with an answer key. Set the operation, the ranges of both numbers, the count, and recreate any sheet from its seed number.
- Math quiz generatorPrintable arithmetic worksheets with an answer key, or an interactive quiz with a score.
- Multiplication tableInteractive times table from 1 to 20 with row and column highlighting, a print view and a practice quiz.
- Words to pagesApproximate page count from a word count, font, font size and line spacing, with the assumptions shown.
- Citation generatorFormat a book, journal article or website citation in APA 7, MLA 9 or Chicago 17 author-date style.
- Word search generatorMake a printable word search puzzle from your own word list, with a size, directions and an answer key.
- Bar chart makerTurn a list of labels and numbers into a bar chart with a tidy axis, then download it as a PNG image.
- Pie chart makerTurn labels and numbers into a pie chart with percentages for every slice, then download it as a PNG.
- Clock reading practicePractise telling time on an analog clock at five levels, from whole hours to single minutes, with instant checking.
- Fraction visualizerDraw fractions as circles or bars side by side, compare them, and see the simplest form, decimal and percentage.
- Place value chartLay any number out in a place value chart with each digit’s value, decimals included, plus its expanded form.
- Word scramble generatorMix up the letters of your own words to make a printable unscramble worksheet, with an answer key for the teacher.
- Cryptogram makerEncode any quote with a random letter-substitution cipher and print it as a cryptogram puzzle with an answer key.
- Class timetable makerBuild a printable weekly school timetable with automatic lesson times; type the subjects straight into the grid.
- Gantt chart makerTurn a list of tasks and dates into a Gantt chart with dependency arrows, then download it as PNG or SVG.
- Flowchart makerType steps linked with arrows and get a laid-out flowchart you can download as PNG or SVG.
- Mind map makerTurn an indented outline into a colour-coded mind map and download it as PNG or SVG.
- Timeline makerTurn dated events into a horizontal timeline and download it as PNG or SVG.
- Org chart makerTurn a list of people and their managers into an organization chart you can download.
- Pros and cons list makerMake a two-column pros and cons list with weights, totals and a verdict, and download it as an image.
- Line chart makerTurn a table of numbers into a line chart with several lines and download it as PNG or SVG.
- Scatter plot makerDraw a scatter plot from pairs of numbers, add a line of best fit and download it as PNG or SVG.
- Venn diagram makerType the items of two or three sets and get a Venn diagram with the overlaps worked out for you.
- Kanban boardA three-column task board that saves in your browser. Add cards and move them from to do to done.