SciFig
Get Started Free

Free P&ID Diagram Generator

Connect the equipment and keep its tags readable. Distinguish pipes from signals, follow the connection key and download a diagram you can reopen.

Describe what you need in the box above.

Start with up to 150 free credits|No credit card required

Get up to 350 free credits on day one when you join through an invite.

3 figure engines · 500+ templatesEvery label editable · 60+ color schemesEditable PPTX · Layered SVG · 8K PNG / JPG

Draw piping and instrument connections

Choose equipment symbols, enter unique tags and connect the equipment with pipe or signal lines. Download the figure or save its settings for later edits.

Use two to eight equipment items and one to twelve connections. Solid lines represent pipes and dashed lines represent signals. The connection key lists each ID and its endpoints.

Equipment

Equipment 1
Equipment 2
Equipment 3

Connections

Connections 1
Connections 2

Free P&ID Diagram Generator— templates & examples

Updated

Equipment tags, pipes and signals

Free P&ID Diagram Generator

Keep the equipment, connection lines and descriptive key together in an editable diagram example.

SciFig’s PID diagram generator turns equipment tags and explicit connections into a piping and instrumentation diagram. Choose vessel, pump, valve and instrument symbols, then select the source and destination of each connection. Solid pipes and dashed signal lines remain distinct, with a connection key listing their IDs, endpoints and descriptions. Download SVG or PNG and save the settings to revise the same diagram later.

Open the P&ID tool
Tank, pump and valve linked by two solid process pipes with a connection key below
  • Name equipment and unique tags
  • Connect equipment with pipes or signals
  • Read IDs and endpoints in the connection key
  • Download SVG, PNG and saved settings

P&ID Diagram Generator Features

Make the equipment and its connections explicit in a diagram you can revise.

Choose equipment and give it a unique tag

Add vessel, pump, valve and instrument symbols, then enter an equipment ID, a tag and a short description. Tags help readers match the symbols to the terminology used in your example. SciFig’s PID diagram generator keeps equipment identities separate from their descriptive labels so you can update the wording while retaining the connection references.

  • Choose the available equipment symbols
  • Enter a unique equipment tag
  • Keep descriptions beside the symbols
Try this in SciFig

Distinguish process pipes from signals

Use the P&ID diagram generator to select the source and destination equipment for each connection, then choose process pipe or instrument signal. The preview draws pipes as solid lines and signals as dashed lines. Direction arrows show the entered source-to-destination relationship, helping readers distinguish material-path examples from instrument connections.

  • Select both equipment endpoints
  • Use solid pipes and dashed signals
  • Follow the entered connection direction
Try this in SciFig

Read connection details in a separate key

The key below the equipment lists every connection ID, its source and destination tags and its description. A matching line sample helps readers associate each row with the diagram. Keeping these details together gives you room for readable labels without placing every description over the routed connection lines.

  • Match each connection with its ID
  • Read source and destination tags
  • Keep descriptions clear of routed lines
Try this in SciFig

Download a figure and retain its inputs

Export SVG when you want a vector file for further editing, or PNG when the diagram belongs in a slide, worksheet or document. Save JSON settings to retain the equipment types, IDs, tags and connections. Reopen them in the P&ID diagram generator when you need another version of the same example.

  • Export SVG or PNG
  • Save equipment and connection settings
  • Reopen the same example for revisions
Try this in SciFig

How to Create a Piping and Instrumentation Diagram

Define the equipment, connect it and inspect the key before exporting.

  1. Add the equipment and tags

    Choose the symbols needed for your example and enter a unique equipment ID and tag for each item. Add a short description so readers can recognize the role of the equipment alongside its symbol.

  2. Enter the pipe and signal connections

    Give each connection its own ID, select the source and destination equipment and choose pipe or signal. Add a description when it helps explain the connection in your example.

  3. Check the diagram and connection key

    Follow the solid and dashed lines, check their direction arrows and read the corresponding rows in the key. Confirm that the tags and descriptions match the equipment and connections you intended to show.

  4. Download and save the settings

    Export SVG or PNG for your notes, presentation or document. Save the JSON settings beside the figure so you can reopen the equipment tags, connection types and descriptions when the example changes.

P&ID Examples for Explanations and Documents

Show equipment relationships with readable tags and an explicit connection key.

Tagged storage tank connected to a transfer pump by one solid process pipe

Explain a tank-to-pump path

Start with a vessel and pump to show a simple material path. Give the equipment recognizable tags and describe the connecting pipe in the key. This small example helps readers relate the source and destination fields to the line in the diagram.

Explore this example
Tank, pump and valve linked by two solid process pipes with a connection key below

Add a valve to a process example

Use a tank, pump and valve to describe the equipment order in a transfer example. Keep the tags distinct and label the pipe connections in the key. Export the piping and instrumentation diagram for a handout or a discussion beside the process notes.

Explore this example
Pump and valve joined by a solid pipe with a dashed signal from a tagged instrument

Compare pipe and signal lines

Place an instrument beside the process equipment and add a signal connection. The dashed line distinguishes it from the solid process pipe, while the key identifies both endpoints. Use the exported figure when explaining how these connection types differ in a simplified P&ID example.

Explore this example
Four tagged equipment symbols with solid pipes, a dashed signal and a four-row connection key

Connect tags with written descriptions

Give each equipment item a tag and add descriptions to the connections. The key keeps the IDs, endpoint tags and text together below the drawing. Use this view beside a written explanation that refers to particular equipment or connection identifiers.

Explore this example
Feed tank, feed pump and isolation valve with revised tags and labeled connection rows

Prepare related versions of one diagram

Save the settings after you create an example, then reopen them to change the equipment tags or descriptions. The existing connections remain tied to their equipment IDs. Export a revised figure when you need another version for a worksheet, slide or document.

Explore this example
Tank, pump and valve linked by two solid process pipes with a connection key below

Choose between a P&ID and a workflow

Use equipment tags and pipe or signal connections when those details are central to your explanation. For a sequence of activities, decisions and handoffs, continue to SciFig’s workflow diagram generator. Choose the structure that matches the relationship you want the reader to follow.

Explore this example

How Researchers Use SciFig

I needed a small tank and pump example with tags that matched the notes for a tutorial. The PID diagram generator let me enter the equipment and describe the connecting pipe in the key. I exported the figure and kept the settings with the worksheet so I could revise the labels later.

Charlotte M.

Chemical engineering teaching assistant, University of Leeds

Free tools

A tool for every scientific figure

110 focused generators for the scientific figure you need — each opens in the right workspace with a matching example.

Illustrations, structures and concept diagrams

52 tools
Chemistry Structure Generator example figureChemistry Structure GeneratorGraphical Abstract Maker example figureGraphical Abstract MakerFree Body Diagram Generator example figureFree Body Diagram GeneratorCircuit Diagram Maker example figureCircuit Diagram MakerAI Scientific Image Generator example figureAI Scientific Image GeneratorEditable 96-Well Plate example figureEditable 96-Well PlateLewis Dot Structure Generator example figureLewis Dot Structure GeneratorScientific Poster Generator example figureScientific Poster GeneratorCladogram Maker example figureCladogram MakerFood Web Maker example figureFood Web MakerMedical Illustration Generator example figureMedical Illustration GeneratorPCR Diagram Generator example figurePCR Diagram GeneratorPPT Text to Visual Converter example figurePPT Text to Visual ConverterMitosis Diagram Generator example figureMitosis Diagram GeneratorAI Infographic Generator example figureAI Infographic GeneratorAnatomical Drawing Generator example figureAnatomical Drawing GeneratorAnimal and Plant Cell Comparison example figureAnimal and Plant Cell ComparisonAnimal Cell Diagram Generator example figureAnimal Cell Diagram GeneratorBacteria Diagram Generator example figureBacteria Diagram GeneratorBlueprint Maker example figureBlueprint MakerBohr Model Maker example figureBohr Model MakerCalvin Cycle Diagram Generator example figureCalvin Cycle Diagram GeneratorCarbon Cycle Diagram Generator example figureCarbon Cycle Diagram GeneratorCell Cycle Diagram Generator example figureCell Cycle Diagram GeneratorCellular Respiration Diagram Generator example figureCellular Respiration Diagram GeneratorDNA Replication Diagram Generator example figureDNA Replication Diagram GeneratorDNA Structure Diagram Generator example figureDNA Structure Diagram GeneratorElectron Configuration Diagram Generator example figureElectron Configuration Diagram GeneratorElectron Transport Chain Diagram Generator example figureElectron Transport Chain Diagram GeneratorGlycolysis Diagram Generator example figureGlycolysis Diagram GeneratorImage to Editable SVG Converter example figureImage to Editable SVG ConverterKrebs Cycle Diagram Generator example figureKrebs Cycle Diagram GeneratorLab Diagram Maker example figureLab Diagram MakerMeiosis Diagram Generator example figureMeiosis Diagram GeneratorMolecular Orbital Diagram Generator example figureMolecular Orbital Diagram GeneratorNitrogen Cycle Diagram Generator example figureNitrogen Cycle Diagram GeneratorP&ID Diagram Generator example figureP&ID Diagram GeneratorPedigree Chart Maker example figurePedigree Chart MakerPhospholipid Diagram Generator example figurePhospholipid Diagram GeneratorPhosphorus Cycle Diagram Generator example figurePhosphorus Cycle Diagram GeneratorPhotosynthesis Diagram Generator example figurePhotosynthesis Diagram GeneratorPhylogenetic Tree Maker example figurePhylogenetic Tree MakerPhysics Vector Diagram Maker example figurePhysics Vector Diagram MakerPlant Cell Diagram Generator example figurePlant Cell Diagram GeneratorProtein Synthesis Diagram Generator example figureProtein Synthesis Diagram GeneratorPunnett Square Maker example figurePunnett Square MakerRay Diagram Maker example figureRay Diagram MakerScientific Color Palette Generator example figureScientific Color Palette GeneratorSingle Line Diagram Generator example figureSingle Line Diagram GeneratorWater Cycle Diagram Generator example figureWater Cycle Diagram GeneratorWestern Blot Diagram Generator example figureWestern Blot Diagram GeneratorWiring Diagram Maker example figureWiring Diagram Maker

Statistical charts and graphs

27 tools
Bode Plot Generator example figureBode Plot GeneratorSpider Chart Maker example figureSpider Chart MakerKaplan-Meier Survival Curve example figureKaplan-Meier Survival CurveMulti-Layer Pie Chart Maker example figureMulti-Layer Pie Chart MakerBell Curve Generator example figureBell Curve GeneratorGantt Chart Generator example figureGantt Chart GeneratorBox Plot Generator example figureBox Plot GeneratorScatter Plot Maker example figureScatter Plot MakerHeatmap Generator example figureHeatmap GeneratorAI Chart Generator example figureAI Chart GeneratorComparison Chart Maker example figureComparison Chart MakerSankey Diagram Generator example figureSankey Diagram GeneratorRadar Chart Generator example figureRadar Chart GeneratorHistogram Maker example figureHistogram MakerBar Chart Generator example figureBar Chart GeneratorCoordinate Plane Generator example figureCoordinate Plane GeneratorDot Plot Creator example figureDot Plot CreatorForest Plot Generator example figureForest Plot GeneratorImage DPI Calculator example figureImage DPI CalculatorTransverse Wave Diagram Generator example figureTransverse Wave Diagram GeneratorLine Chart Generator example figureLine Chart GeneratorNumber Line Generator example figureNumber Line GeneratorPareto Chart Maker example figurePareto Chart MakerFigure Checker example figureFigure CheckerSupply and Demand Graph Maker example figureSupply and Demand Graph MakerWaterfall Chart Maker example figureWaterfall Chart MakerVolcano Plot Generator example figureVolcano Plot Generator

Flowcharts, frameworks and structure diagrams

31 tools
Conceptual Framework Generator example figureConceptual Framework GeneratorTheoretical Framework Generator example figureTheoretical Framework GeneratorSyntactic Tree Generator example figureSyntactic Tree GeneratorDichotomous Key Maker example figureDichotomous Key MakerSentence Diagram Generator example figureSentence Diagram GeneratorText to Diagram Generator example figureText to Diagram GeneratorPRISMA Flow Diagram Generator example figurePRISMA Flow Diagram GeneratorER Diagram Generator example figureER Diagram GeneratorUML Diagram Generator example figureUML Diagram GeneratorTree Diagram Generator example figureTree Diagram GeneratorFishbone Diagram Generator example figureFishbone Diagram GeneratorNeural Network Diagram Generator example figureNeural Network Diagram GeneratorDecision Tree Generator example figureDecision Tree GeneratorSoftware Architecture Diagram Generator example figureSoftware Architecture Diagram GeneratorCONSORT Flow Diagram Generator example figureCONSORT Flow Diagram GeneratorContext Diagram Creator example figureContext Diagram CreatorData Flow Diagram Generator example figureData Flow Diagram GeneratorExperimental Workflow Diagram example figureExperimental Workflow DiagramGenogram Maker example figureGenogram MakerGraphic Organizer Generator example figureGraphic Organizer GeneratorImage to Flowchart Converter example figureImage to Flowchart ConverterNetwork Diagram Generator example figureNetwork Diagram GeneratorOrg Chart Maker example figureOrg Chart MakerSequence Diagram Generator example figureSequence Diagram GeneratorState Diagram Generator example figureState Diagram GeneratorSwimlane Diagram Generator example figureSwimlane Diagram GeneratorSynthesis Matrix Generator example figureSynthesis Matrix GeneratorTimeline Generator example figureTimeline GeneratorUse Case Diagram Generator example figureUse Case Diagram GeneratorVenn Diagram Generator example figureVenn Diagram GeneratorWorkflow Diagram Generator example figureWorkflow Diagram Generator
Browse all tools →

P&ID Diagram Questions

1.

2.

3.

4.

5.

6.

Call to action background

Equipment tags, pipes and signals

Make equipment connections easy to follow

Create a P&ID diagram

Free to start · No credit card required · Built for researchers