Free Diagram & Chart Generators
Make labeled diagrams, charts, and graphs for biology, chemistry, physics, math, economics, and more. Generate with AI or build them exactly — then download as PNG or SVG in seconds.
Research
Professional visualizations for academic papers, presentations, and reports
Graphical Abstract Maker
Create professional graphical abstracts for journal submissions. AI-powered tool for researchers to visualize research findings for Elsevier, Nature, Cell, and more.
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AI Infographic Generator
Create professional infographics in minutes with AI. Transform your data and ideas into beautiful visual stories for presentations and reports.
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Text to Diagram Generator
Transform text descriptions into professional diagrams. Create flowcharts, architectures, and process maps instantly with AI.
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Conceptual Framework Generator
Create conceptual framework diagrams for research papers and theses. Visualize variable relationships and theoretical models.
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Theoretical Framework Generator
Create theoretical framework diagrams based on TAM, TPB, UTAUT, and other established theories. Perfect for dissertations and academic research.
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Scientific Poster Generator
Create professional scientific posters for conferences and symposiums. AI generates proper layouts with all essential academic sections.
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AI Chart Generator
Generate professional charts from text descriptions. Create bar charts, line graphs, pie charts, and scatter plots instantly with AI.
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Column Chart Maker
Create accurate grouped, stacked, and 100% stacked column charts from CSV or spreadsheet data. Export SVG, PNG, and CSV.
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Bar Chart Maker
Create horizontal, grouped, and stacked bar charts for rankings, comparisons, and classroom data visualization.
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Software
System analysis diagrams, architecture visualizations, and software engineering tools
Activity Diagram Generator
Create UML activity diagrams for workflows, business processes, and system behavior. AI-powered with swimlanes, decision nodes, and fork/join support.
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Use Case Diagram Generator
Create UML use case diagrams from actors, system boundaries, use cases, and include or extend relationships. Export SVG, PNG, and PlantUML.
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Sequence Diagram Generator
Create UML sequence diagrams showing messages between users, services, APIs, databases, and external systems.
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Context Diagram Generator
Create professional context diagrams (Level 0 DFD) online for free. AI-powered system context diagram maker for visualizing system boundaries and external entity interactions.
Open toolMedical
Medical illustrations, anatomy diagrams, and healthcare education visuals
Medical Illustration Generator
Generate professional medical illustrations with AI. Create anatomy diagrams, surgical procedures, organ systems, and healthcare visuals for medical education.
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Coagulation Cascade Diagram Generator
Generate a labeled, blank, or simplified coagulation cascade for a lecture or review figure.
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Wiggers Diagram Generator
Generate a labeled, blank, or simplified Wiggers diagram — ECG, pressures, volume, and heart sounds for one cardiac cycle.
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Oxygen-Hemoglobin Dissociation Curve Generator
Generate a labeled, blank, left-shift, or right-shift oxygen-hemoglobin dissociation curve — sigmoid SO2 versus PO2 with P50.
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Dose-Response Curve Generator
Generate a labeled, blank, IC50, or Hill-slope dose-response curve — sigmoid log-dose plot with EC50.
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Action Potential Graph Generator
Generate a labeled, blank, or cardiac action potential graph — membrane voltage versus time, not a neuron cartoon.
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Hand Bones Diagram
Free hand bones diagrams — labeled carpals, metacarpals, phalanges, blank worksheet, and coloring pages.
Open toolHeart Diagram Generator
Create heart anatomy diagrams with chambers, valves, blood flow, and circulatory labels for biology and medical education.
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Anatomical Drawing Generator
Generate professional anatomical drawings and medical illustrations with AI. Create skeletal, muscular, and joint anatomy visuals for education.
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Biology
Cell diagrams, anatomy charts, and life science worksheets
Floral Diagram Generator
Create botanical floral diagrams from floral formula notation. Parse sepals, petals, stamens, carpels, fusion rings, mother axis, and bract.
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Parts of a Flower Diagram Generator
Create labeled parts-of-a-flower diagrams with AI — petal, sepal, stamen (anther, filament), and pistil (stigma, style, ovary, ovule), plus blank worksheets.
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Animal Cell Diagram Generator
Create free printable animal cell diagrams. Generate labeled and unlabeled versions perfect for biology worksheets and quizzes.
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Plant Cell Diagram Generator
Generate printable plant cell diagrams showing cell wall, chloroplasts, and central vacuole. Ideal for science worksheets.
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Animal vs Plant Cell Comparison
Create side-by-side comparison worksheets showing key differences between animal and plant cells for biology class.
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Meiosis Diagram Generator
Create meiosis diagrams showing homologous chromosomes, crossing over, meiosis I, meiosis II, and gamete formation.
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Photosynthesis Diagram Generator
Create free printable photosynthesis diagrams showing light reactions, Calvin cycle, and chloroplast structure. Ideal for biology worksheets.
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Mitosis Diagram Generator
Create free printable mitosis diagrams showing all phases of cell division. Perfect for biology worksheets covering prophase, metaphase, anaphase, and telophase.
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Cell Cycle Diagram Generator
Generate labeled cell cycle diagrams showing interphase (G1, S, G2), the M phase, and checkpoints — labeled or blank for biology worksheets and quizzes.
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Chemistry
Chemistry posters, periodic tables, and chemical bonding diagrams
Chemistry Poster Maker
Generate professional chemistry posters and science displays with AI. Create periodic table posters, chemical bonds, and lab safety displays.
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Chemistry Structure Generator
Free ChemDraw alternative. Create molecular structures, reaction mechanisms, and chemical diagrams with AI for research papers and lab reports.
Open toolLewis Dot Structure Generator
Create Lewis dot structures and valence electron diagrams for chemistry homework, worksheets, and teaching materials.
Open toolBohr Model Maker
Create Bohr model diagrams for atoms, electron shells, valence electrons, and chemistry classroom visuals.
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Molecule Generator from Description
Generate molecule structure diagrams from compound names, SMILES-style text, formulas, or plain-English chemistry descriptions.
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Reaction Coordinate Diagram Generator
Draw a labeled reaction coordinate diagram (energy profile) from energy values — plot the transition-state peak, reactant and product levels, and labeled Ea and ΔH arrows, auto-detecting exothermic vs endothermic, plus catalyzed pathways and two-step reactions. Precise SVG/PNG export plus an AI sketch mode.
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Phase Diagram Generator
Draw pressure–temperature phase diagrams for water, CO₂, or any substance, with solid/liquid/gas regions, the triple point, critical point, and 1 atm line.
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Heating Curve Generator
Make a heating or cooling curve (phase change diagram): temperature vs heat added, with flat plateaus at the melting and boiling points, for any substance.
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Titration Curve Generator
Generate acid–base titration curves for strong and weak acids and bases, with the equivalence point, half-equivalence point (pH = pKa), and buffer region marked.
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Earth Science
Water cycle, rock cycle, and environmental science diagrams
Carbon Cycle Diagram Generator
Create carbon cycle diagrams showing photosynthesis, respiration, decomposition, fossil fuels, and atmospheric carbon exchange.
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Water Cycle Diagram Generator
Generate free printable water cycle diagrams showing evaporation, condensation, and precipitation. Perfect for earth science worksheets.
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Rock Cycle Diagram Generator
Create rock cycle diagrams showing igneous, sedimentary, and metamorphic rock transformations for earth science.
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Volcano Diagram Generator
Create labeled volcano diagrams with AI — cross-sections with the magma chamber, conduit, vent, crater, lava, and ash cloud, plus volcano types and eruption diagrams.
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Hertzsprung-Russell Diagram Generator
Plot a Hertzsprung–Russell (HR) diagram — stars charted by surface temperature and luminosity with the main sequence, giants, supergiants, and white dwarf regions labeled on a reversed logarithmic temperature axis. Precise SVG/PNG export plus an AI sketch mode.
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Moon Phases Diagram Generator
Create labeled moon phases diagrams with AI — all 8 phases in order, the Sun-Earth-Moon geometry that explains them, waxing vs waning, and the lunar cycle.
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Solar System Diagram Generator
Create labeled solar system diagrams with AI — the Sun and eight planets in order, orbits, the asteroid belt, inner vs outer planets, and planet size comparisons.
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Layers of the Earth Diagram Generator
Create labeled layers of the Earth diagrams with AI — crust, mantle, outer core, and inner core cross-sections with depth, temperature, and composition.
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Plate Tectonics Diagram Generator
Create labeled plate tectonics diagrams with AI — divergent, convergent (subduction), and transform plate boundaries, mantle convection, trenches, and volcanic arcs.
Open toolHistory
Historical figures, timelines, and social studies worksheets
Seasonal
Holiday-themed science activities and coloring pages
Education
Hand-drawn illustrations and teaching materials for educators
AI Worksheet Generator
Create printable worksheets from grade level, subject, topic, question type, and difficulty. Generate student sheets with answer keys.
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Graphic Organizer Generator
Create graphic organizers for classrooms, research notes, comparisons, cause-effect analysis, and structured thinking.
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Science Doodle Maker
Create hand-drawn style scientific illustrations for teaching. Generate friendly doodles for biology, chemistry, physics, and earth science concepts.
Open toolScience Drawing Generator
Create professional, labeled science drawings for biology, chemistry, physics, and earth science. Generate textbook-quality scientific diagrams with AI.
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PPT Text to Visual Converter
Transform PowerPoint text into professional visual graphics with AI. Create charts, diagrams, infographics, and illustrations for presentations instantly.
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Sentence Diagram Generator
Create sentence diagrams to visualize grammar structure. Free AI-powered sentence diagramming tool with Reed-Kellogg notation for students and teachers.
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Syntactic Tree Generator
Create syntactic tree diagrams for linguistics class with phrase structure, X-bar theory, and constituency analysis.
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Place Value Chart Generator
Make a place value chart for any number — place each digit in its column from ones to millions, show digit values and expanded form. Whole numbers or decimals.
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Place Value Disks Generator
Build place value disks — color-coded ones, tens, hundreds, and thousands with exact counts and expanded form.
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Business
Quality management, root cause analysis, and business process diagrams
Gantt Chart Maker
Create Gantt charts for project timelines, tasks, milestones, dependencies, and presentation-ready planning visuals.
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Fishbone Diagram Generator
Create fishbone (Ishikawa) diagrams for root cause analysis and quality management. Free AI-powered cause and effect diagram maker with 6M categories.
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Org Chart Maker
Create organization charts for teams, departments, reporting lines, project groups, and business presentations.
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Circular Flow Diagram Generator
Make the circular flow of income diagram — 2-, 3-, or 4-sector models with money and real flows in the correct directions, editable labels, and free SVG/PNG export.
Open toolPhysics
Force diagrams, free body diagrams, and physics education visuals
Motion Diagram Physics Maker
Create physics motion diagrams with position dots, velocity arrows, acceleration arrows, and SVG, PNG, or CSV export.
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Vector Diagram Physics Maker
Create precise physics vector diagrams with components, head-to-tail addition, resultant calculation, and SVG, PNG, or CSV export.
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Free Body Diagram Generator
Create free body diagrams for physics with labeled forces. Free AI-powered diagram maker for students, teachers, and engineers.
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Circuit Diagram Maker
Create professional circuit diagrams for physics and electrical engineering. Free AI-powered circuit diagram creator with standard IEEE symbols.
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Wiring Diagram Maker
Create professional wiring diagrams and electrical schematics online. Free AI-powered tool for home electrical, automotive, industrial, and HVAC wiring diagrams.
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Ray Diagram Generator
Draw accurate ray diagrams for converging and diverging lenses and concave and convex mirrors, with real vs virtual image formation. Free, with SVG and PNG export.
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Wave Diagram Generator
Create labeled wave diagrams with AI — transverse and longitudinal waves with crest, trough, wavelength, amplitude, and equilibrium, plus blank worksheets.
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Electric Field Diagram Generator
Create labeled electric field line diagrams with AI — point charges, dipoles, like charges, and parallel plates, with field direction arrows and blank worksheets.
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Pulley Diagram Generator
Create labeled pulley system diagrams with AI — fixed, movable, and compound pulleys with rope, load, effort, and mechanical advantage, plus blank worksheets.
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Engineering
Blueprints, floor plans, and architectural layout tools for design and construction
Bode Plot Generator
Generate Bode magnitude and phase plots from transfer function coefficients. Calculate crossover frequencies, gain margin, and phase margin.
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Nyquist Plot Generator
Enter a transfer function to draw G(jω) on the complex plane and download SVG.
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Smith Chart Generator
Paste impedance or reflection coefficient to draw a Smith chart and download SVG.
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Root Locus Plot Generator
Enter a transfer function to draw Evans closed-loop pole paths and download SVG.
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Single-Line Diagram Generator
Create electrical single-line (one-line / SLD) diagrams showing utility, transformers, buses, breakers, and loads.
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Blueprint Maker
Create professional blueprints and floor plans with AI. Design house layouts, office spaces, restaurant plans, and architectural drawings instantly.
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HVAC Diagram Generator
Create HVAC system, refrigerant-cycle, and airflow diagrams for class, bids, or service notes.
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P&ID Maker
Create piping and instrumentation diagrams (P&IDs) with AI — standard ISA symbols, instrument tags, and control loops for tanks, pumps, valves, and heat exchangers.
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Process Flow Diagram Generator
Create process flow diagrams (PFDs) with AI — major equipment (tanks, pumps, reactors, columns, heat exchangers) connected by labeled material-flow streams.
Open toolWhy Teachers & Students Choose ConceptViz
AI-Powered Generation
Describe what you need and get a professional diagram in seconds, or build it exactly with a precise tool. No design skills required.
Labeled & Unlabeled Options
Generate labeled versions for teaching and unlabeled ones for quizzes and student practice.
Print-Ready Quality
Download high-resolution PNG or SVG, ready for slides, reports, worksheets, and printing.
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