AutoCAD Text Size (TEXTSIZE & Text Styles Explained)

In the last lesson, we learned how viewports control scale and how scale factors work.

Now we apply that same idea to text.

This is where many drawings start to look inconsistent.

• Text may appear too large
• Text may appear too small
• Notes may not match the drawing
• Leaders and annotations may not line up

This happens when text is not sized correctly based on the drawing scale.

Paper Space Text Is Your Reference

Before working with text in Model Space, we need a reference point.

Text placed in Paper Space is always drawn at full size.

For example:

If you create text at 1/8″ height in Paper Space,
it will print exactly 1/8″ tall.

If you measured it with a ruler, it would match.

This becomes your benchmark.

Everything in Model Space must match this when viewed through the viewport.

Why Text Looks Wrong in AutoCAD

From the last lesson, remember:

Paper Space does not change your drawing

It only controls how the drawing appears.

That means:

• If text in Model Space is not sized correctly,
• it will not match what you expect on paper.

How TEXTSIZE Works in AutoCAD

TEXTSIZE is a variable that controls the height of new text.

When your text style height is set to 0:

TEXTSIZE controls the height of your text

This gives you full control over text sizing.

How to Set Text Size Using Scale Factor

This is where everything connects.

From Lesson 2:

Viewport scale ? gives you a scale factor

Now we use that number.

The formula is simple:

Paper text height × scale factor = Model Space text height

How the Text Size Table Works

The scale table acts like a simple calculator.

It connects:

• Paper text height
• Viewport scale
• Model Space text height

For example:

If your viewport is set to 1/2″ = 1′-0″
Scale factor = 24

If your paper text height is 1/8″

The table shows:

Model Space text height = 3

This means your text must be 3 units tall in Model Space
to appear correctly on paper.

Instead of calculating each time, the table gives you the answer instantly.

Text Height Is Stored in the Object

When you create text, the height is stored directly in that object.

This means:

Changing TEXTSIZE affects new text
It does not change existing text

If text is incorrect, you must edit its height directly.

Text styles define your font and formatting.

They should not be used to control text height.

The correct setup is:

Set text style height to 0

When height is 0:

TEXTSIZE controls the text height

If a height is set in the style:

TEXTSIZE is ignored

This is one of the most common causes of text problems.

TEXT vs MTEXT (Quick Difference)

AutoCAD has two main text tools:

TEXT
Single-line text, quick and simple

MTEXT
Multi-line text, more control (like a paragraph)

Both follow the same rule:

Their height must be set using the scale factor

Important AutoCAD Commands for Text

TEXT
Creates single-line text

MTEXT
Creates multi-line text

TEXTSIZE
Sets the default height for new text

STYLE (ST)
Controls text styles (font and formatting)

Common Text Size Problems in AutoCAD

• Setting text height randomly
• Not using the scale factor
• Using fixed-height text styles
• Trying to fix text in Paper Space

These lead to inconsistent drawings.

The Core Idea Behind Text Scaling

Here’s how everything works together:

• Text Style (ST) = defines the font
• TEXTSIZE = controls the text height
• Text Object = stores the height
• Scale Table = gives you the correct value

When these are aligned:

• Your text will match your viewport scale
• Your drawings will look consistent and professional

The Only Rule for Text Size

Set your text height using the scale factor

Keep your text style height set to 0

Create text at the correct size in Model Space

If your text is printing too small, what should you adjust?

A) Change viewport scale
B) Change TEXTSIZE
C) Scale the drawing

(Answer is at the bottom of the page)

AutoCAD Text Size FAQ

What controls text height in AutoCAD?
TEXTSIZE controls text height when the text style height is set to 0.

Why does my text not match my drawing scale?
Because it was not sized using the scale factor that matches your viewport.

Should I set height in the text style?
No. Set the style height to 0 so TEXTSIZE can control it.

Does Paper Space fix text size?
No. Paper Space does not fix text size. Text must be sized correctly in Model Space.

Why doesn’t changing TEXTSIZE fix existing text?
Because text height is stored in the object. TEXTSIZE only affects new text.

Why not just place all my text in Paper Space?

You can place text in Paper Space, but it is not recommended for most annotation.

The main issue is consistency.

If your drawing scale changes, or your model changes, you now have to check Paper Space to make sure your text still lines up correctly.

As you edit your model, it becomes easy to forget to update text placed on the sheet.

This makes drawings more error-prone and harder to maintain.

Best practice is to keep your text with your drawing in Model Space so everything stays aligned and updates together.

That said, Paper Space text does have a purpose.

It is commonly used for:

• General notes
• Title block information
• Schedules

These are items that belong to the sheet, not the model.

Answer to Quick Check

B) Change TEXTSIZE

What’s Coming Next

Now that you understand how text size works, the next step is applying the same logic to dimensions.

In the next lesson, we will cover:

• DIMSCALE
• Dimension scaling
• How dimensions follow the same system

Continue to Lesson 4

DIMSCALE & Dimensions Explained

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