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Interactive tools for Maths, Science, English, Social Studies and more. Built for students, teachers and schools.
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Popular Tools
Most loved tools by students and teachers
Multiplication Table Visualiser
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Fraction Visualiser & Calculator
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Graph Plotter
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Geometry Shape Calculator
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Interactive Periodic Table
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Physics Formula Calculator
Popular
Times Table Speed Quiz
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LCM & HCF Step-by-Step
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Maths Formula Sheet
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Human Body Systems Explorer
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Vocabulary Flashcards
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Spelling Bee Practice
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India States & Capitals Explorer
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Interactive Tools
Mathematics
From basic arithmetic to advanced geometry - explore, practise and learn with interactive tools that show every step.
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Science
Chemistry · Physics · Biology · Space Explore Tools
English
Grammar & writing · Vocabulary & spelling · Reading & typing Explore Tools
Hindi & Punjabi
Alphabet & sounds · Typing & numbers Explore Tools
Social Studies
Maps & geography · History & time Explore Tools
Computer Science
Coding · Logic Explore ToolsFor Students
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Numbers & arithmetic
SimulationMultiplication Table Visualiser
Colour-coded times tables for any number 1–50 with skip-counting patterns, hidden-answer practice and a printable chart.Class 1–5PopularQuizTimes Table Speed Quiz
Beat-the-clock multiplication quiz — single or mixed tables, streak bonus, best-time tracking and a certificate for full marks.Class 1–6Popular
SimulationPrime Number Sieve
Watch the Sieve of Eratosthenes cross out multiples live, then check whether any number is prime with its factors.Class 4–8CalculatorLCM & HCF Step-by-Step
Enter 2–5 numbers and see factor trees, the division method and prime-power working for both LCM and HCF.Class 4–10Popular
CalculatorSquares, Cubes & Roots
Find squares, cubes, square roots and cube roots with the prime-factorisation and long-division methods shown step by step.Class 6–9
ChartPlace Value & Number Names
Type any number to see its place-value chart, expanded form and number name in both the Indian (lakh, crore) and International systems.Class 2–6
CalculatorRoman Numeral Converter
Convert numbers to Roman numerals and back with a place-by-place breakdown, validity check and a quiz mode.Class 3–7
CalculatorNumber System Converter
Convert between binary, octal, decimal and hexadecimal (including fractions) with the full division and place-value working.Class 9–12
GameIndian Money & Change
Count notes and coins, add up a shopping bill and work out the change to return — with real ₹ notes drawn on screen.Class 1–5Fractions, percentage & money
SimulationFraction Visualiser & Calculator
See fractions as pies and bars, then add, subtract, multiply or divide them with every step and the simplified answer.Class 3–7Popular
CalculatorPercentage Calculator
Every percentage question in one place — X% of Y, what percent, percentage change and marks to percentage — with working.Class 5–10
CalculatorProfit, Loss & Discount
Solve profit, loss, discount, marked price and GST problems with the formula used and full step-by-step working.Class 7–10
CalculatorSimple & Compound Interest
Compare SI and CI side by side with a year-by-year table, growth chart and full working for any compounding frequency.Class 7–10
CalculatorRatio, Proportion & Unitary Method
Simplify ratios, divide an amount in a given ratio, check proportion and solve unitary-method word problems step by step.Class 5–8Algebra & graphs
QuizNumber Line & Integers
Add and subtract integers with animated jumps on a number line, compare numbers and practise with quick questions.Class 6–7
CalculatorBODMAS & Equation Solver
Simplify any BODMAS expression one operation at a time, and solve linear equations like 2x + 5 = 15 with every step shown.Class 5–9CalculatorGraph Plotter
Plot lines, parabolas and points on a zoomable grid, find intersections and download the graph as an image.Class 7–12Popular
CalculatorQuadratic Equation Solver
Solve ax² + bx + c = 0 by formula, factorisation and completing the square, with discriminant, nature of roots and graph.Class 10–12
CalculatorAP & Coordinate Geometry
Arithmetic progressions (nth term, sum, missing term) plus distance, section, midpoint and area formulas — with steps and a plotted graph.Class 10–12
CalculatorMatrix & Determinant Calculator
Add, multiply and transpose matrices, find determinants, adjoint and inverse, and solve equations by Cramer’s rule — with steps.Class 11–12Geometry & measurement
CalculatorGeometry Shape Calculator
Pick any 2D or 3D shape to get area, perimeter, volume and surface area with a live labelled diagram and working.Class 5–10Popular
SimulationPythagoras Theorem Visualiser
Find any missing side of a right triangle, see the squares on each side drawn to scale and check Pythagorean triplets.Class 7–10
CalculatorTrigonometry Table & Unit Circle
Exact sin, cos, tan, cosec, sec and cot values for standard angles, an interactive unit circle and a printable cheat sheet.Class 10–12
CalculatorUnit Converter
Convert length, mass, temperature, time, speed, area, volume and data units, with an all-units table and the conversion formula.Class 4–10
SimulationSymmetry Drawing Studio
Draw on one side and watch it mirror instantly — 2, 4, 6 or 8-way symmetry, rainbow brush, undo and download.Class 1–6
QuizLearn to Read the Clock
Drag the clock hands to set any time, read it in words, switch 12/24-hour and practise with a "What time is it?" quiz.Class 1–4
CalculatorSpeed, Distance & Time
Find speed, distance or time with unit conversion, average speed, relative speed and train-and-platform problems.Class 5–10
QuizProtractor & Angle Practice
Measure angles with an on-screen protractor, learn every angle type, and practise drawing and reading angles.Class 4–9Data & probability
CalculatorStatistics Calculator
Mean, median, mode, range, quartiles, variance and standard deviation — for raw data or frequency tables — with steps and charts.Class 9–12
SimulationProbability Simulator
Toss coins, roll dice and spin spinners thousands of times to compare experimental and theoretical probability live.Class 8–12
MakerBar Graph & Pictograph Maker
Type your data and get a bar graph, pictograph, pie chart or line graph — labelled, colourful and ready to print or download.Class 3–9Reference
CalculatorScientific Calculator
A full scientific calculator with trigonometry (deg/rad), logs, powers, roots, factorial, memory and calculation history.Class 9–12ChartMaths Formula Sheet
All 465 formulas from Class 6 to 12, filtered by class and chapter, searchable, with one-tap copy and a printable sheet.Class 6–12PopularChemistry
ChartInteractive Periodic Table
All 118 elements with configuration, valency, mass, uses and facts — filter by group, block or state, and quiz yourself.Class 8–12Popular
CalculatorChemical Equation Balancer
Type any unbalanced equation and get it balanced instantly with an atom-count table proving both sides match.Class 8–12
CalculatorMolar Mass Calculator
Molar mass of any formula — brackets and hydrates included — with element-wise mass percentage and mole conversions.Class 9–12
SimulationpH Scale Visualiser
Slide through pH 0–14 to see the colour, ion balance and real-life substances, then test indicators like litmus.Class 7–10
SimulationBuild an Atom
Add protons, neutrons and electrons to build any atom — watch the element, charge, mass number and isotope change live.Class 8–11
SimulationElectron Configuration & Lewis Dot
Get the shell and orbital configuration of any element with the Aufbau filling order, valency, and a Lewis dot structure.Class 9–12Physics
SimulationColour Mixer (Light & Pigment)
Mix light (RGB) and paint (CMY) with sliders and overlapping circles to see why red + green light makes yellow.Class 5–9CalculatorPhysics Formula Calculator
Pick any formula from motion, force, energy, electricity, optics, waves or heat, solve for any variable and see the working.Class 9–12Popular
CalculatorOhm’s Law & Circuit Calculator
Solve V = IR, then build series and parallel resistor circuits to get equivalent resistance, current and power with a diagram.Class 10–12
SimulationLens & Mirror Ray Diagram
Drag the object and watch the rays, image position, size and nature update live for concave and convex mirrors and lenses.Class 10–12
SimulationProjectile Motion Simulator
Launch a projectile at any speed and angle, watch the path animate and read range, max height and time of flight.Class 11–12
SimulationMotion Graphs Explorer
Watch distance-time and velocity-time graphs draw themselves as an object moves — and read speed, acceleration and distance off them.Class 9–11
SimulationCircuit Builder
Drag a cell, bulbs, switches and a resistor onto the board, wire them up and see whether the bulb glows — series or parallel.Class 6–10
SimulationSound & Wave Generator
Hear and see a sound wave — change frequency and amplitude to understand pitch, loudness, wavelength and the human hearing range.Class 8–11Biology
SimulationHuman Body Systems Explorer
Tap organs on labelled diagrams of the digestive, circulatory, respiratory, skeletal, nervous and excretory systems, then take the quiz.Class 4–10Popular
SimulationFood Chain & Food Web Builder
Drag organisms onto a canvas, connect who eats whom, check trophic levels and download your food web as an image.Class 3–8
SimulationPlant vs Animal Cell Explorer
Click any organelle on labelled plant and animal cell diagrams to learn its job, compare the two side by side, and take the quiz.Class 6–10Space
SimulationPlanet Size & Distance Explorer
Compare the Sun and planets to scale by size and distance, open fact cards and find your age and weight on other planets.Class 5–8
SimulationMoon Phases Explorer
Move through the lunar month to see how the Sun, Earth and Moon line up for each phase, and find the phase for any date.Class 5–8Grammar & writing
QuizParts of Speech Highlighter
Type a sentence and every word is colour-coded as noun, verb, adjective and more, with definitions and a practice game.Class 3–8
QuizGrammar Practice Quiz
180 topic-wise MCQs on tenses, articles, prepositions, voice, speech and more, with an explanation for every answer.Class 3–10
MakerLetter & Application Writer
Ready CBSE-format templates for leave applications, formal and informal letters — fill your details, copy or print.Class 4–12
MakerEssay & Paragraph Outline Builder
Pick a topic and get a structured outline — introduction, body points and conclusion — with linking words, then write and print it.Class 5–12Vocabulary & spelling
QuizVocabulary Flashcards
Class-wise word lists with meaning, example and pronunciation in flashcard, spelling and match modes — progress is saved.Class 1–10PopularQuizSpelling Bee Practice
Hear the word, type the spelling and get instant feedback with hints — finish the round to earn a certificate.Class 2–8Popular
QuizIdioms & Phrases
338 idioms and phrases with meaning, an example sentence and the Hindi sense — searchable, printable and with a quiz.Class 5–12
QuizOne-Word Substitution
500+ one-word substitutions grouped by topic and by root (-cide, -logy, -phobia), with memory hints and a timed quiz.Class 6–12Reading & typing
CalculatorWord & Sentence Counter
Live word, sentence and paragraph count with reading time, readability grade, word limit tracker and most-used words.Class 5–12
QuizTyping Speed Test
Measure typing speed (WPM) and accuracy on school-friendly passages with live highlighting and personal-best tracking.Class 3–12
QuizReading Speed Test
Read a passage, then answer comprehension questions — get your reading speed in words per minute and your understanding score.Class 4–12Alphabet & sounds
ChartHindi Varnamala & Barakhadi
Learn Hindi swar and vyanjan with pronunciation, example words, the full barakhadi chart and a letter quiz.Class 1–3
ChartGurmukhi Painti Learner
Learn the 35 letters of Gurmukhi (Painti Akhri), lagan matran (vowel signs) and example words, then test yourself.Class 1–3Typing & numbers
QuizHindi & Punjabi Typing
Type in English and get Hindi or Gurmukhi instantly — “kabootar” becomes कबूतर / ਕਬੂਤਰ. Copy, hear it and practise typing.Class 3–12
ChartNumbers 1–100 in Three Languages
Every number from 1 to 100 in English, Hindi and Punjabi with spelling, pronunciation, a printable chart and a quiz.Class 1–5Maps & geography
SimulationIndia States & Capitals Explorer
Explore all states and union territories on an interactive map with capitals, languages and facts, then play the map quiz.Class 4–8Popular
QuizWorld Capitals Quiz
Timed multiple-choice quiz on world capitals by continent and difficulty, with a review of every answer at the end.Class 6–10
CalculatorLongitude & Time Calculator
Learn why 15° = 1 hour: find the local time at any longitude, compare IST with world cities and see it on a globe strip.Class 6–9History & time
Coding
SimulationPython Playground
Write and run real Python in the browser — no installation. Built for the CBSE Class 11–12 syllabus with ready example programs.Class 9–12
SimulationHTML & CSS Live Editor
Type HTML and CSS on one side and see the web page appear on the other — with a tag reference and step-by-step lessons.Class 7–10
SimulationLogo Turtle Drawing
Type FD 100, RT 90 and watch the turtle draw. The classic Logo commands schools teach, with REPEAT loops and downloadable art.Class 3–7Logic
Play on screen
GameSudoku for Kids
Play 4×4, 6×6 and 9×9 sudoku at four difficulty levels, with hints, notes and a mistake check — or print a fresh puzzle.Class 3–10
GameHangman Spelling Game
Guess the word letter by letter from class-wise word lists or your teacher’s own words, with a hint and a meaning at the end.Class 2–10
GamePadhai Cricket
A full T20 match where every question is a ball. Answer fast for a six, slowly for a single, and a wrong answer loses a wicket — with DRS reviews and Hindi commentary.Class 3–12
GameDaily Brain Workout
Eight 60-second exercises a day for memory, focus, speed, logic, spatial sense and words — played on your own school syllabus, with a skill profile that shows what to practise.Class 3–12
GameQuiz Adventure — Journey Across India
Travel across India on a map game. Answer questions about each state to unlock its neighbours, collect 36 badges and earn your Bharat Darshan certificate.Class 3–10
GameTangram Shape Puzzle
Drag and turn the seven tangram pieces to fill 38 outlines — a hands-on way to learn shapes, angles and area.Class 1–6Printable puzzles
GameWord Search Maker
Type your own words — spellings, science terms, Hindi or Punjabi words — and get a puzzle to play on screen or print for the class.Class 1–10
GameCrossword Maker
Enter answers and clues and the grid builds itself — solve it online with checking, or print the puzzle and answer key.Class 3–12
GameMaths Bingo Cards
Generate a different bingo card for every child from tables, addition or subtraction, plus a caller screen for the teacher.Class 1–8Entrance exam practice
QuizMental Ability Practice
Number series, odd one out, coding-decoding, mirror images and analogies — fresh questions every time, for Navodaya and Sainik exams.Class 4–10
QuizSpeed & Vedic Maths Tricks
Learn 20+ mental-maths shortcuts — squares ending in 5, multiply by 11, base method — then beat the clock in timed practice.Class 4–12Choosing a path
CalculatorStream Selector (After Class 10)
Answer questions about your interests and marks to see how Science, Commerce, Arts and vocational streams suit you — with reasons.Class 9–10
ChartCareer Explorer
99 careers with the stream needed, the courses, the entrance exams, what the work is really like and where to study in India.Class 9–12Life skills
Marks & attendance
CalculatorMarks & Grade Calculator
Enter subject marks to get percentage, CBSE grade, CGPA, best-of-five and a subject chart on a shareable result card.Class 5–12
CalculatorAttendance Percentage Calculator
Check your attendance percentage and find exactly how many classes you must attend — or can miss — to stay above 75%.Class 6–12Plan & focus
MakerStudy Timetable Generator
Add your subjects, exam dates and daily hours to get a balanced day-by-day study plan with revision days — ready to print.Class 5–12
ClassroomFocus Timer (Pomodoro)
Study in focused 25-minute sessions with short breaks, a task list and a daily focus log to build a study habit.Class 5–12Revision
Class materials
MakerMaths Worksheet Generator
Create printable practice worksheets — addition to fractions — choose difficulty and number of questions, with an answer key.Class 1–8
MakerCertificate Maker
Design appreciation and participation certificates with your school name, choose a style and download or print in seconds.All classes
QuizQuiz Maker (Share by Link)
Build an MCQ quiz, share one link with the class and students attempt it instantly — no login, no app, scored on the spot.All classes
MakerHandwriting Practice Sheets
Make four-line and box-grid tracing sheets for English, Hindi and Punjabi — your own words, dotted letters, ready to print.Class 1–5Running the class
MakerRandom Name Picker & Group Maker
Spin a wheel to pick a student fairly, avoid repeats, and split the class into balanced random groups for activities.All classes
ClassroomClassroom Noise Meter & Timer
A big smart-board noise level meter that warns when the class gets loud, with an activity timer and quiet-class rewards.All classes
MakerHouse Points Scoreboard
Award and track points for every house on a big scoreboard — add points in one tap, see the standings and show it on the smart board.All classes
ClassroomThought of the Day
365 thoughts for morning assembly in English, Hindi and Punjabi — a new one each day, with a word of the day and a display board.All classesSchool office
Photos for forms
MakerPassport Size Photo Maker
Crop any photo to 35×45mm or any ID size, put a plain white background behind it, squeeze it into the exact KB a form demands, and print a full A4 sheet of copies with cut lines.Class 1–12
MakerImage Compressor
Drop in any number of photos, set the biggest size each one may be, and download them all as a ZIP. Resizes first, then compresses, so as little as possible is lost.Class 1–12
MakerBackground Remover
Clear the background from any picture and save a transparent PNG, or drop a clean new colour behind it. Tidy the edges with an erase and restore brush.Class 1–12Editing & layout
MakerCollage Maker
Drop photos into one of twenty layouts, put a name under each picture for a class board, add a title and logo, and save a print-ready A4 sheet or a square post.Class 1–12
MakerPhoto Editor & Filters
Crop, straighten and brighten a photo, try 20 filters, blur out other children’s faces, add a school watermark, and save it at the exact size or KB you need.Class 1–12Documents & codes
MakerQR Code Maker
Make a QR code for a link, the school Wi-Fi, a phone number, a UPI payment or any text. Add your logo, and print a whole A4 sheet of labelled codes.Class 1–12
MakerDocument Scanner to PDF
Photograph a page or the blackboard, drag the four corners to straighten it, and turn it into a crisp scan. Add as many pages as you like and save one PDF.Class 1–12
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Frequently Asked Questions
Everything about ClassHud's free learning tools
Are the ClassHud learning tools free?
Yes. All 100+ tools are completely free for students, teachers and parents. There is no sign up, no app to install and no limit on how often you use them.
Which classes are the tools for?
The tools cover Class 1 to Class 12. Every tool shows the classes it suits, and the class filter on this page lists only the tools for the class you pick.
Which subjects do the tools cover?
Mathematics, Science, English, Hindi and Punjabi, Social Studies and Computer Science, plus study planners, exam and career guidance, games and puzzles, teacher tools and photo and document tools.
Do the tools work on mobile phones?
Yes. Every tool works in the browser on phones, tablets, laptops and classroom smartboards, with nothing to download.
Is my information uploaded anywhere?
The tools run inside your browser, so the photos, names, marks and text you type stay on your device. Favourites and recently used tools are remembered only in your own browser.
Can teachers use these tools in the classroom?
Yes. Many tools have a Classroom mode for smartboards, and teachers can print worksheets, handwriting sheets, certificates, word searches and crosswords, or share a quiz by link.
How do I find the right tool quickly?
Type what you need in the search box, for example "fraction calculator", "class 7 maths" or "simulations". The search understands spelling mistakes and short forms, and you can filter by subject, class and type of tool.
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