Free Student Tools
Everything on M2Toolkit that helps with coursework, sorted by what you're actually doing — writing an essay, citing sources, checking a grade, or getting through a problem set.
None of them need an account. Calculators show the formula and the working, so you can check your own method instead of just copying an answer.
133 free tools · No sign-up · Works on phones and computers
Grades & GPA
Find out where you stand before report cards do. The final grade calculator tells you the score you need on the exam; the test grade calculator turns “18 out of 30” into a percentage and letter grade.
- Final Exam Grade CalculatorThe score you need on your final exam to reach the grade you want.Education
- Weighted Grade CalculatorYour overall course grade from weighted assignments and exams.Education
- Test Grade CalculatorA test score from questions wrong or points earned, with a printable grading chart.Education
- GPA CalculatorSemester and cumulative GPA from your grades and credit hours.Education
- GPA Goal PlannerThe GPA you need in your remaining credits to reach a target cumulative GPA.Education
- Marks Percentage CalculatorTurn exam marks into a percentage, for one subject or many.Education
- CGPA to Percentage ConverterConvert CGPA to percentage using common university formulas.Education
Essays & writing
Hit the word count without padding. Plan how many words each section of an essay gets, check readability, and compare two drafts line by line.
- Word CounterCount words, characters, sentences and paragraphs as you type.Text
- Essay Word Count PlannerSplit a word count across intro, body and conclusion, with pages and writing time.Text
- Character CounterCount characters with and without spaces, with social media limits.Text
- Readability CheckerFlesch reading ease, grade level and the sentences that are hardest to read.Text
- Reading Time CalculatorHow long a text takes to read or say aloud.Text
- Text Compare (Diff Checker)Compare two texts and see exactly what was added, removed or changed.Text
- Title Case ConverterCapitalize headlines correctly in AP, Chicago, APA or simple style.Text
- Case ConverterChange text to UPPERCASE, lowercase, Title Case, Sentence case and more.Text
- Text SummarizerPull the most important sentences out of a long text (extractive summary).Smart Text
- Text to SpeechRead text aloud with your device's voices — choose language, voice, speed and pitch.Text
Citations & research
Format references in the style your department asks for. Each generator names the edition it follows (APA 7, MLA 9, Chicago 17), so you can match it to your handbook.
- APA Citation GeneratorAPA 7th edition references and in-text citations for books, articles and websites.Education
- MLA Citation GeneratorMLA 9th edition Works Cited entries and in-text citations.Education
- Chicago Citation GeneratorChicago Manual of Style bibliography entries and author-date citations.Education
- Harvard Referencing GeneratorHarvard (Cite Them Right) references and in-text citations.Education
- IEEE Citation GeneratorIEEE numbered references for engineering and computer science papers.Education
- Reference List GeneratorBuild a full bibliography in APA, MLA, Chicago, Harvard or IEEE — sorted and ready to paste.Education
- BibTeX GeneratorCreate BibTeX entries for LaTeX, Overleaf, Zotero and Mendeley.Education
- Literature Review MatrixOrganise sources by aim, method, findings and limitations in an editable table.Education
Math & algebra
From fractions to derivatives. The solvers show each step, which is what most teachers want to see on the page.
- Scientific CalculatorTrig, logs, powers, roots and brackets, with degrees or radians.Calculators
- Fraction CalculatorAdd, subtract, multiply and divide fractions and mixed numbers, simplified.Calculators
- Percentage CalculatorFind X% of a number, or what percent one number is of another.Calculators
- Ratio CalculatorSimplify ratios and solve for the missing value in a proportion.Calculators
- Exponent CalculatorRaise any number to any power, including negative and decimal exponents.Calculators
- Square Root CalculatorSquare roots, cube roots and any nth root, with simplified radicals.Calculators
- LCM & GCF CalculatorLeast common multiple and greatest common factor of two or more numbers.Calculators
- Quadratic Equation SolverSolve ax² + bx + c = 0 with real or complex roots, the vertex and the discriminant.Calculators
- Equation SolverSolve any equation in x, or a system of linear equations, with the answer checked.Calculators
- Logarithm CalculatorLog of any number in any base, natural log, log₁₀, log₂ and antilog.Calculators
- Matrix CalculatorAdd, multiply, transpose and invert matrices, and find the determinant.Calculators
- Derivative CalculatorDifferentiate a function step by step — first, second or third derivative.Calculators
- Sequence CalculatorFind the rule and nth term from a few terms — arithmetic, geometric, quadratic or Fibonacci — plus sums and next terms.Calculators
- Series (Sigma) CalculatorAdd up Σ f(n) between any limits, or the sum of an infinite geometric series.Calculators
Geometry
Missing sides, angles, areas and volumes, with the rule used for each answer.
- Triangle CalculatorSolve any triangle (SSS, SAS, ASA, AAS, SSA, right) with a scaled diagram, area, heights and step-by-step working.Calculators
- Pythagorean Theorem CalculatorFind the hypotenuse or a missing leg of a right triangle, with the working.Calculators
- Area CalculatorArea and perimeter of squares, rectangles, triangles, circles, trapezoids and more.Calculators
- Circle CalculatorRadius, diameter, circumference and area of a circle from any one of them.Calculators
- Volume & Surface Area CalculatorVolume and surface area of cubes, boxes, cylinders, spheres, cones and pyramids.Calculators
Statistics
Descriptive stats for a lab report or the tests a stats module expects: z-scores, p-values, confidence intervals and regression.
- Average CalculatorMean, median, mode and range of any list of numbers.Calculators
- Standard Deviation CalculatorSample and population standard deviation and variance, step by step.Calculators
- Probability CalculatorChance of one event, two events, or k successes in repeated trials.Calculators
- Permutation & Combination CalculatornPr and nCr, with or without repetition — exact even for big numbers.Calculators
- Z-Score CalculatorTurn a value into a z-score and percentile, or find probabilities under the normal curve.Calculators
- Confidence Interval CalculatorConfidence intervals for a mean or a proportion, with the margin of error.Calculators
- P-Value CalculatorP-values from z, t, chi-square or F statistics, with a plain-English verdict.Calculators
- Linear Regression CalculatorLine of best fit, correlation and R² from your x and y data, with predictions.Calculators
- Sample Size CalculatorHow many responses you need for a survey or study at your confidence level.Calculators
- Effect Size Calculator (Cohen's d)Cohen's d, Hedges' g and Glass's Δ for two groups, with an interpretation.Calculators
Physics
Mechanics, energy and waves. Enter values in SI units or pick the unit next to each field.
- Speed, Distance & Time CalculatorFind speed, distance or travel time from the other two, in km, miles or metres.Education
- Acceleration CalculatorAcceleration, final or initial velocity, or time — plus distance covered.Education
- Force Calculator (F = ma)Newton's second law and weight: solve for force, mass or acceleration.Education
- Momentum CalculatorMomentum p = mv and impulse J = FΔt, solved for any variable.Education
- Work CalculatorWork done from force and distance, or from power and time, in joules.Education
- Energy CalculatorKinetic, potential and mass–energy (E = mc²), solved for any variable.Education
- Power CalculatorPower from work and time, voltage and current, or force and velocity.Education
- Pressure CalculatorPressure from force and area, or fluid pressure at depth (ρgh).Education
- Density CalculatorDensity, mass or volume from the other two — and whether it floats in water.Education
- Projectile Motion CalculatorRange, flight time and maximum height for any launch speed, angle and height.Education
- Gravitational Force CalculatorNewton's law of universal gravitation between any two masses.Education
- Wavelength CalculatorWavelength from speed and frequency, for sound, light and photons.Education
- Frequency CalculatorFrequency from the period or from wave speed and wavelength, plus angular frequency.Education
Chemistry
Balance an equation, get a molar mass, then move on to moles, molarity and pH.
- Interactive Periodic TableAll 118 elements with atomic numbers, masses, groups and categories. Search and filter.Education
- Chemical Equation BalancerBalance any chemical equation with the smallest whole-number coefficients.Education
- Molar Mass CalculatorMolar mass of any formula with a breakdown by element and mass percent.Education
- Mole CalculatorConvert grams to moles, moles to grams, and moles to particles.Education
- Molarity CalculatorMolarity, mass of solute to weigh out, or volume of solution needed.Education
- Dilution & Concentration CalculatorC₁V₁ = C₂V₂ dilutions, mass percent and parts per million.Education
- Stoichiometry CalculatorMasses and moles of every reactant and product from one known amount.Education
- pH CalculatorConvert between pH, pOH, [H⁺] and [OH⁻] — and see if it's acidic or basic.Education
- Ideal Gas Law CalculatorSolve PV = nRT for pressure, volume, moles or temperature.Education
- Half-Life CalculatorRadioactive decay: amount remaining, time elapsed, initial amount or half-life.Education
Electrical & engineering
Circuit basics for first-year labs plus a few mechanics checks for beams, stress and flow.
- Ohm's Law CalculatorVoltage, current, resistance and power from any two of them.Education
- Resistor Color Code CalculatorRead 4- and 5-band resistor colour codes, with the tolerance range.Education
- Resistance CalculatorResistors in series and parallel, and the resistance of a length of wire.Education
- Voltage Divider CalculatorOutput voltage of a resistor divider, or the resistor you need for a target voltage.Education
- Capacitor CalculatorCapacitors in series and parallel, stored charge and energy, and RC time constants.Education
- Inductor CalculatorInductors in series and parallel, stored energy and inductive reactance.Education
- Power Factor CalculatorPower factor, reactive power and the correction needed, single- or three-phase.Education
- Coulomb's Law CalculatorElectrostatic force between two charges, attractive or repulsive.Education
- Beam Load CalculatorReactions, bending moment, shear and deflection of a simply supported beam.Education
- Stress CalculatorNormal stress from force and area, and Young's modulus from stress and strain.Education
- Strain CalculatorStrain from change in length, or from stress and Young's modulus.Education
- Reynolds Number CalculatorReynolds number for pipe flow and whether it's laminar or turbulent.Education
Biology
Genetics crosses and DNA strands, the two things biology homework asks for most.
Study planning & focus
Break a semester into weeks and an assignment into tasks, then use a timer to actually sit down and do them. Plans are saved in your browser only.
- Class Timetable MakerBuild and print your weekly class timetable for the semester.Date & Time
- Assignment PlannerBreak an assignment into dated steps from today to the deadline.Date & Time
- Daily Study PlannerTurn your subjects and hours into a timed study schedule with breaks.Date & Time
- Thesis & Dissertation PlannerMilestones from literature review to submission, scheduled back from your deadline.Date & Time
- Exam CountdownLive countdowns to all your exams and deadlines, with study days left.Date & Time
- Study TimerFocus and break sessions per subject, with a log of how long you studied.Date & Time
- Pomodoro TimerFocus in 25-minute sessions with short breaks, fully customizable.Date & Time
- To-Do List & ChecklistSimple to-do lists and checklists that save in your browser.Date & Time
- Habit TrackerTick off daily habits on a monthly grid and keep your streaks going.Date & Time
- Weekly PlannerPlan tasks for each day of the week, tick them off and print it.Date & Time
- Online NotepadA private notepad that saves automatically in your browser.Everyday
Presentations & diagrams
Rehearse a talk against the clock and draw the diagrams a report or project needs.
- Presentation TimerA big, colour-changing timer for talks — amber to wrap up, red when time's up.Date & Time
- Flowchart MakerDrag-and-drop flowchart editor with smart connectors, templates and PNG, SVG or PDF export.Design
- Mind Map MakerTurn an indented outline into a colourful mind map — SVG or PNG.Editors
- Timeline MakerCreate vertical or horizontal timelines from a simple list — SVG or PNG.Editors
- ERD MakerDesign database diagrams with crow's-foot relationships — import SQL or DBML, generate SQL for 4 databases.Editors
- Data Flow Diagram MakerDraw DFDs with entities, processes, data stores and labelled flows — levels 0–2, validation and templates.Editors
Student money
Make a term's budget last. See where money goes each month and what subscriptions really cost over a year.
- Student Budget CalculatorPlan a term on a student loan, grant and part-time job — and see if it lasts.Finance
- Monthly Budget PlannerPlan where your money goes each month and compare with the 50/30/20 rule.Finance
- Expense TrackerLog daily spending by category, see monthly totals and export to CSV.Finance
- Subscription Cost CalculatorAdd up all your subscriptions to see what they cost per month and per year.Finance
- Savings Goal CalculatorHow much to save each month to reach a target by a date.Finance
- Loan & EMI CalculatorMonthly payment (EMI), total interest and a full repayment schedule.Finance
- Salary ConverterConvert pay between hourly, daily, weekly, monthly and yearly.Finance
Internships & first jobs
A one-page CV, a cover letter that matches the advert, and a simple portfolio to send with them.
- Resume & CV BuilderCountry-specific CVs and resumes with 12 ATS templates, drag-and-drop editing and PDF export.Editors
- Cover Letter GeneratorWrite a structured, professional cover letter with a live preview and PDF download.Business
- Portfolio Website BuilderDesign a portfolio website visually — drag-and-drop sections, 8 templates, 12 themes, live device preview and a ready-to-host download.Editors
Coding coursework
Format and validate data, test a regular expression, or turn notes into Markdown for a README.
- JSON FormatterBeautify, minify and validate JSON, with clear error locations.Developer
- CSV to JSON ConverterConvert CSV or spreadsheet data into a clean JSON array.Developer
- Regex TesterTest regular expressions with live match highlighting and groups.Developer
- Regex ExplainerBreak a regular expression into plain-English pieces you can understand.Developer
- Markdown EditorWrite Markdown with a toolbar and live preview, then save as .md or HTML.Text
- Markdown to HTMLConvert Markdown to HTML with a safe live preview.Developer
- Base64 Encoder & DecoderEncode text to Base64 or decode Base64 back to text (UTF-8 safe).Developer
- UUID GeneratorGenerate random UUIDs (v4 or time-ordered v7) in bulk, and validate them.Developer
Everyday helpers
Small things that come up in group work and halls: pick who presents, split into teams, convert units, count days to a deadline.
- Unit ConverterConvert any common unit: length, weight, temperature, volume and more.Converters
- Days Between DatesCount days, weeks and months between two dates.Date & Time
- Random Name PickerPick a random winner or item from a list, fairly.Everyday
- Random Team GeneratorSplit a list of names into fair random teams or groups.Everyday
- Random Number GeneratorPick random numbers in any range, with or without repeats.Everyday
- Password GeneratorCreate strong, random passwords with the length and characters you choose.Security
- QR Code GeneratorMake a free QR code for any link or text, in PNG or SVG. No expiry.Web
Study guides
Worked examples that go with these tools.
- Guide · Date & TimeHow Long Is 3–5 Business Days? Charts for Every Common Range3–5 business days is 3 to 7 calendar days. See exactly when 2–8, 5–7, 7–10 and 10–15 business days end for every order day, and how holidays shift them.Oct 8, 2026 · 7 min read
- Guide · EducationWhat Is 18 Out of 30 as a Grade? Test Score to Percentage Charts18/30 is 60%, a D−. Score-to-percentage and letter-grade charts for tests out of 10, 20, 25, 30, 40 and 50 — plus the rounding rule that turns a B into a B+.Oct 8, 2026 · 6 min read
- Guide · CalculatorsHow to Calculate Percent Savings (and Why 30% + 20% Isn't 50%)The percent savings formula with real examples, plus stacked discounts, dollar vs percent coupons, buy-one-get-one deals, bulk packs and annual plans.Oct 8, 2026 · 6 min read
- Guide · EducationWhat Grade Do I Need on My Final? The Formula, ExplainedWork out the exact final exam score you need for the grade you want, with worked examples, weighted and points-based classes, and syllabus rules that change the answer.Oct 8, 2026 · 6 min read
- Guide · Date & TimeHow to Calculate Business Days Between Two DatesCount working days by hand or in Excel, add business days to a deadline, and handle observed and substitute holidays — with 2026 working days per month for the US and UK.Oct 7, 2026 · 7 min read
- Guide · CalculatorsHow to Solve Any Triangle: Which Rule to Use and WhenPick the right rule for what you know — law of cosines, law of sines or Pythagoras — with worked examples, the SSA ambiguous case and quick answer checks.Oct 7, 2026 · 8 min read
Student tools: common questions
Are these tools really free for students?
Yes. Every tool on this page is free to use with no sign-up and no limit on how many times you use it. The site is supported by ads, which are never placed inside a tool.
Is it cheating to use a calculator for homework?
That depends on your teacher's rules, so check them. The calculators here show the formula and each step, which makes them better for checking your own working than for skipping it.
Do the citation generators follow APA 7 and MLA 9?
Yes. The APA generator follows the 7th edition and the MLA generator the 9th. Your department may have its own variation, so compare one or two entries with your course handbook.
Is my work saved or uploaded anywhere?
No. Text, grades and plans stay in your browser. Planners and the notepad save to this browser's local storage so they're there next time on the same device; nothing is sent to our servers.
Looking for science and grade calculators only? See Education tools, or browse all tools.