Free Sentence Diagram Maker

Sentence Diagram Maker

Type any sentence, label each word with its part of speech, and instantly see a Reed-Kellogg style diagram. Free, no sign-up required.

No credit card requiredHow it works

Type a sentence and give each word a role. The diagram draws itself.

Templates:
Label each word:
  • The
  • tall
  • boy
  • kicked
  • the
  • ball
Sentence Diagram

The tall boy kicked the ball.

  • Subject
  • Verb
  • Direct object
  • Article
  • Adjective

How to use it

How It Works

Create a sentence diagram in four simple steps.

  1. 1

    Enter a sentence

    Type any English sentence or choose from pre-built template sentences.

    5 seconds

  2. 2

    Label each word

    Give each word one of 12 roles — Subject, Verb, Direct Object, Adjective, Preposition and more. "Suggest small words" labels articles, pronouns and prepositions for you.

    30 seconds

  3. 3

    View the diagram

    See a Reed-Kellogg style SVG diagram with a horizontal baseline, subject|verb split, and diagonal modifier lines.

    Instant

  4. 4

    Print or download

    Print the diagram on a sheet with Name and Date lines, or download it as a PNG or SVG image.

    Instant

What you get

Features

  • Reed-Kellogg Diagrams

    Classic sentence diagramming style with horizontal baseline, vertical subject|verb split, and diagonal modifiers.

  • 12 Sentence Roles

    Label words as Subject, Verb, Direct Object, Indirect Object, Predicate Noun, Predicate Adjective, Article, Adjective, Adverb, Preposition, Object of the Preposition or Conjunction.

  • 9 Example Sentences

    Ready-made sentences covering direct and indirect objects, predicate nouns and adjectives, prepositional phrases, and compound subjects and verbs.

  • Live SVG Rendering

    Diagram updates instantly as you label words — no need to click a generate button.

  • Color-Coded Labels

    Each part of speech gets a distinct color for easy visual identification.

  • Print, PNG or SVG

    Print a sheet with Name and Date lines, or download the diagram as a PNG or SVG for worksheets and slides.

  • Practice Mode

    Turn a labelled sentence into an exercise: students label each word, press Check, and the diagram appears only when every label is right.

  • No Sign-Up Required

    100% free, no account needed. Just open and start diagramming.

What Is Sentence Diagramming?

Sentence diagramming is a method of visually representing the grammatical structure of a sentence using the Reed-Kellogg system. A horizontal baseline holds the subject and verb (separated by a vertical line), while modifiers like adjectives and adverbs branch off on diagonal lines below.

This free sentence diagram maker lets you type any sentence, label each word with its part of speech, and instantly see a Reed-Kellogg diagram rendered as clean SVG. Use template sentences for common structures or create your own. Print diagrams for worksheets, handouts, or study guides. For more grammar practice, try our Grammar Practice tool.

Frequently Asked Questions

Everything you need to know about the Sentence Diagram Maker.

A sentence diagram is a visual representation of a sentence's grammatical structure using the Reed-Kellogg method — with a horizontal baseline, a vertical line separating subject and verb, and diagonal lines for modifiers.

Yes — 100% free with no sign-up, no ads, and no hidden costs. Create and print unlimited sentence diagrams.

You can label words as Subject, Verb, Direct Object, Indirect Object, Predicate Noun, Predicate Adjective, Article, Adjective, Adverb, Preposition, Object of the Preposition or Conjunction. Each gets its own color in the diagram, and two subjects or verbs joined by a conjunction are drawn as a compound fork.

Yes. There are 9 example sentences, from "The dog ran." to sentences with indirect objects, predicate nouns and adjectives, prepositional phrases, and compound subjects and verbs. They are in English, since this is an English-grammar tool.

Yes. Click Print to print the diagram on a sheet with Name and Date lines, or download it as a PNG or SVG image.

Still have questions?

Our team is here to help. Email us at support@aiquizmaker.co

Start Diagramming Sentences Now

Free, instant, no sign-up. Create Reed-Kellogg diagrams in seconds.

  • No credit card required
  • 20 free quiz generations
  • One-click Google sign-in