Free Reed-Kellogg Diagram Editor

Create professional sentence diagrams with our interactive visual editor. Perfect for grammar education and language learning.

Reed-Kellogg Components

Basic

━Use

Main Baseline

The primary horizontal line for subject and predicate

┃Use

Subject/Predicate Divider

Vertical line that passes through the baseline

│Use

Direct Object Line

Vertical line that stops at baseline for direct objects

╲Use

Predicate Line

Backslash line for predicate nouns/adjectives

Modifiers

╱Use

Modifier Line

Slanted line for adjectives and adverbs

⌒Use

Prepositional Phrase

Slanted line + horizontal line for prep phrases

Objects

⟱Use

Indirect Object

Line structure for indirect objects under verb

Conjunctions

┅Use

Coordinate Conjunction

Dotted line for coordinating conjunctions

╱Use

Subordinate Conjunction

Dotted slanted line for subordinate clauses

Verbals

⌐Use

Gerund Structure

Stepped line structure for gerunds

⌐Use

Infinitive Structure

Stepped line structure for infinitives

Special

( )Use

Appositive

Parentheses structure for appositives

Quick Guide

• Start with a main horizontal line
• Add vertical line to separate subject/predicate
• Use diagonal lines for modifiers
• Add text labels for words

Start Creating Your Diagram

Select a tool from the sidebar and click on the canvas

Double-click text to edit • Drag elements to move