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.
Biomedical
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.
Open tool
Signaling Pathway Diagram Generator
Generate signaling pathway diagrams: insulin to GLUT4, TGF-β/SMAD, and MAPK/ERK, with membrane and nucleus layers and exact reference diagrams.
Open tool
Clinical Pathway Diagram Generator
Make illustrative care pathway flowcharts for sepsis, hip fracture, diabetes or stroke teaching. Example steps drawn from public NICE guidance. Clinician review needed.
Open tool
Anatomical Drawing Generator
Generate professional anatomical drawings and medical illustrations with AI. Create skeletal, muscular, and joint anatomy visuals for education.
Open tool
Kaplan–Meier Generator
Plot a Kaplan–Meier survival curve from your event times — product-limit estimate with censoring marks, median survival, and group comparison, export SVG.
Open tool
Volcano Plot Generator
Paste a DESeq2, edgeR, or limma table to draw an exact RNA-seq volcano plot and download a watermark-free SVG.
Open tool
Nursing Concept Map Generator
Generate nursing care plan and pathophysiology concept maps from a fictional case, with exact reference diagrams for the correct layout.
Open tool
Dermatology Patient Education Illustrations
Make skin condition and skin care illustrations for patient handouts, with diverse skin tones and plain-language labels. Clinician review needed.
Open tool
Medical Infographic Maker
Make medical and patient education infographics from facts you cite, such as hand hygiene, blood pressure, and stroke signs. Clinician review needed.
Open tool
Graphical abstracts and posters
Visual summaries and conference posters for papers and talks.
Graphical Abstract Maker
Draft graphical abstract layouts from your study summary. Check your journal's AI policy before you submit.
Open tool
Scientific Poster Generator
Create professional scientific posters for conferences and symposiums. AI generates proper layouts with all essential academic sections.
Open tool
AI Scientific Image Generator
Generate professional scientific images and illustrations with AI. Create molecular structures, cell diagrams, physics concepts, and research visuals for papers.
Open tool
Scientific Color Palette Generator
Generate colorblind-friendly color palettes with hex codes. Get Okabe-Ito, Viridis, and Nature journal colors for scientific figures.
Open tool
AI Infographic Generator
Create professional infographics in minutes with AI. Transform your data and ideas into beautiful visual stories for presentations and reports.
Open toolMethods and frameworks
Professional visualizations for academic papers, presentations, and reports
Conceptual Framework Generator
Create conceptual framework diagrams for research papers and theses. Visualize variable relationships and theoretical models.
Open tool
PRISMA Flow Diagram Generator
Create PRISMA 2020 flow diagrams for systematic reviews and meta-analyses. Free AI-powered PRISMA flowchart generator for researchers.
Open tool
Experimental Design Diagram Generator
Build a science-fair Experimental Design Diagram (EDD) — IV levels, trials, DV, constants. Free SVG and PNG.
Open tool
Research Roadmap Maker
Create professional research roadmaps for PhD proposals, grant applications, and project planning with AI.
Open tool
Workflow Diagram Generator
Create professional workflow and process diagrams for research protocols, clinical trials, and project management.
Open tool
Forest Plot Generator
Create journal-style forest plots for meta-analysis — enter each study’s effect size and 95% CI, get weighted squares and a pooled diamond, export SVG.
Open tool
Text to Diagram Generator
Transform text descriptions into professional diagrams. Create flowcharts, architectures, and process maps instantly with AI.
Open tool
Theoretical Framework Generator
Create theoretical framework diagrams based on TAM, TPB, UTAUT, and other established theories. Perfect for dissertations and academic research.
Open tool
AI Chart Generator
Generate professional charts from text descriptions. Create bar charts, line graphs, pie charts, and scatter plots instantly with AI.
Open tool
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.
Open tool
GHS Pictograms
All 9 GHS hazard pictograms with meanings, signal words and hazard classes. Free SVG and PNG downloads and a printable A4 or Letter poster.
Open tool
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.
Open tool
Atom Diagram
Free atom diagrams — labeled parts, blank worksheets, particle charts, and coloring pages for science class.
Open tool
Polyatomic Ions Chart
Free polyatomic ions chart with 38 common ions, charges and naming rules. Filter, search, flashcards, printable and blank practice sheets.
Open tool
Functional Groups Chart
Free organic functional groups chart with 25 groups, structures, IUPAC suffixes and priority order. Filter, compare, print or download.
Open tool
Solubility Rules Chart
Free solubility rules chart with 190 salts, 8 rules and a precipitate checker with net ionic equations. Print or download.
Open tool
Physics
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.
Open tool
Vector Diagram Physics Maker
Create precise physics vector diagrams with components, head-to-tail addition, resultant calculation, and SVG, PNG, or CSV export.
Open tool
Free Body Diagram Generator
Create free body diagrams for physics with labeled forces. Free AI-powered diagram maker for students, teachers, and engineers.
Open tool
Circuit Diagram Maker
Create professional circuit diagrams for physics and electrical engineering. Free AI-powered circuit diagram creator with standard IEEE symbols.
Open tool
Wiring Diagram Maker
Create professional wiring diagrams and electrical schematics online. AI wiring diagram drafts, with exact reference diagrams to check them against.
Open tool
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.
Open tool
Wave Diagram Generator
Create labeled wave diagrams with AI — transverse and longitudinal waves with crest, trough, wavelength, amplitude, and equilibrium, plus blank worksheets.
Open tool
Electromagnetic Spectrum Diagram
Free electromagnetic spectrum diagrams — labeled full spectrum, blank worksheet, visible light zoom, and coloring.
Open tool
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.
Open tool
Classroom and other193 tools
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.
Open tool
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.
Open tool
Sequence Diagram Generator
Create UML sequence diagrams showing messages between users, services, APIs, databases, and external systems.
Open tool
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 tool
C4 Diagram Generator
Generate C4 model diagrams from text: System Context, Container, Component, and Code levels, with an exact reference diagram for each.
Open tool
AI and Software Diagram Template Library
Diagram generators for MCP, LLM apps, transformers, CNN, LSTM, solution architecture, UML, data flow and the systems engineering V-model.
Open toolBiology class diagrams
Cell diagrams, anatomy charts, and life science worksheets
96 Well Plate Template Generator
Make a 96 or 384 well plate map with standard curve, serial dilution, replicate and control presets, and export SVG, PNG, PDF or CSV.
Open tool
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.
Open tool
Animal Cell Diagram Generator
Create free printable animal cell diagrams. Generate labeled and unlabeled versions perfect for biology worksheets and quizzes.
Open tool
Eukaryotic Cell Diagram Generator
Generate labeled eukaryotic cell diagrams and eukaryotic vs prokaryotic cell comparisons, with the nucleus, ER, Golgi, and mitochondria.
Open tool
Plant Cell Diagram Generator
Generate printable plant cell diagrams showing cell wall, chloroplasts, and central vacuole. Ideal for science worksheets.
Open toolAnimal vs Plant Cell Comparison
Create side-by-side comparison worksheets showing key differences between animal and plant cells for biology class.
Open tool
Meiosis Diagram Generator
Create meiosis diagrams showing homologous chromosomes, crossing over, meiosis I, meiosis II, and gamete formation.
Open tool
Photosynthesis Diagram Generator
Create free printable photosynthesis diagrams showing light reactions, Calvin cycle, and chloroplast structure. Ideal for biology worksheets.
Open tool
Mitosis Diagram Generator
Create free printable mitosis diagrams showing all phases of cell division. Perfect for biology worksheets covering prophase, metaphase, anaphase, and telophase.
Open tool
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.
Open tool
Water Cycle Diagram Generator
Generate free printable water cycle diagrams showing evaporation, condensation, and precipitation. Perfect for earth science worksheets.
Open tool
Rock Cycle Diagram Generator
Create rock cycle diagrams showing igneous, sedimentary, and metamorphic rock transformations for earth science.
Open tool
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.
Open tool
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.
Open tool
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.
Open tool
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.
Open tool
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.
Open tool
Mohs Hardness Scale
Mohs hardness scale chart with 10 minerals, everyday scratch tests, gemstone hardness, a scratch-test checker and printable posters.
Open toolSeasonal
Holiday-themed science activities and coloring pages
Education
Hand-drawn illustrations and teaching materials for educators
Production Possibilities Curve Generator
Draw a PPC or PPF with increasing or constant opportunity cost, capacity shifts, and free SVG or PNG export.
Open tool
AI Worksheet Generator
Create printable worksheets from grade level, subject, topic, question type, and difficulty. Generate student sheets with answer keys.
Open tool
Report Card Comments
154 free report card comments by grade, subject, and behavior, plus a generator for custom drafts. Copy and personalize in seconds.
Open tool
Graphic Organizer Generator
Create graphic organizers for classrooms, research notes, comparisons, cause-effect analysis, and structured thinking.
Open tool
Metric Prefixes Chart
Free metric prefixes chart with all 24 SI prefixes from quetta to quecto, an exact prefix converter and printable posters.
Open tool
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.
Open tool
PPT Text to Visual Converter
Transform PowerPoint text into professional visual graphics with AI. Create charts, diagrams, infographics, and illustrations for presentations instantly.
Open tool
Sentence Diagram Generator
Create sentence diagrams to visualize grammar structure. Free AI-powered sentence diagramming tool with Reed-Kellogg notation for students and teachers.
Open tool
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.
Open tool
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.
Open tool
Org Chart Maker
Create organization charts for teams, departments, reporting lines, project groups, and business presentations.
Open tool
Value Stream Map Maker
Make a value stream map with process boxes, data boxes, inventory triangles, push or pull arrows, and a lead-time timeline.
Open tool
Pugh Matrix Generator
Score options against a datum with +, S and −, add weights, and export the Pugh matrix with net and weighted totals as SVG, PNG or CSV.
Open tool
Issue Tree Generator
Break a problem into branches, mark hypotheses, add numbers for a driver tree, and export the issue tree as SVG, PNG, CSV or an outline.
Open tool
Flywheel Diagram Maker
List 3 to 8 stages that feed each other, mark friction points, and export the flywheel diagram as SVG, PNG, CSV or text.
Open tool
Risk Heat Map Maker
Plot risks on a 3x3, 4x4 or 5x5 likelihood and impact matrix, score each risk, and export the heat map as SVG, PNG or CSV.
Open tool
SIPOC Diagram Maker
Fill in suppliers, inputs, process steps, outputs, and customers and download an exact SIPOC diagram or blank template as SVG or PNG.
Open tool
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.
Open tool
Nyquist Plot Generator
Enter a transfer function to draw G(jω) on the complex plane and download SVG.
Open tool
Smith Chart Generator
Paste impedance or reflection coefficient to draw a Smith chart and download SVG.
Open tool
Root Locus Plot Generator
Enter a transfer function to draw Evans closed-loop pole paths and download SVG.
Open tool
Logic Gate Symbols
AND, OR, NOT, NAND, NOR, XOR, XNOR and buffer in ANSI and IEC symbols, with Boolean expressions, computed truth tables and SVG or PNG downloads.
Open tool
Circuit Symbols Chart
Circuit symbols chart with resistor, capacitor, diode, transistor and more in ANSI and IEC styles, with SVG and PNG downloads and a printable cheat sheet.
Open tool
P&ID Symbols
P&ID symbols and PFD symbols chart: vessels, pumps, valves, and instruments in ISA 5.1 style, with SVG and PNG downloads and a printable cheat sheet.
Open tool
AWG Wire Gauge Chart
AWG wire gauge chart from 0000 to 40 with diameter, mm², kcmil, copper resistance, an AWG to mm² converter, a voltage drop calculator and printable sheets.
Open tool
Ohm's Law Chart
Ohm's law chart with the wheel and triangle, all 12 formulas for voltage, current, resistance and power, a calculator with unit prefixes and printable sheets.
Open tool
Why 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.
Related guides
Start Creating Diagrams for Free Today
Join thousands of teachers, students, and researchers using ConceptViz to create diagrams and charts. Sign up free and get welcome credits to try any tool.
Get Started Free