Auto-width vs auto-height text in Figma - Formula Comparison Trace

Concept Flow

Auto-width text box: width adjusts to fit text in one line, height fixed.
Auto-height text box: width fixed, height adjusts to fit wrapped text.

This concept explains the difference between auto-width and auto-height text boxes in Figma. Auto-width boxes grow horizontally to fit text in a single line, keeping height constant. Auto-height boxes keep width fixed and grow vertically to fit text wrapped in multiple lines.

Formula

Text length = 50 characters Fixed width = 100 px Average character width = 5 px Characters per line = 100 / 5 = 20 Number of lines = ceil(50 / 20) = 3 Line height = 14 px Total height = 3 * 14 = 42 px

Step-by-step calculation of the height for an auto-height text box with fixed width 100px and text length 50 characters.

Step-by-Step Trace

Step	Expression	Evaluates To	Explanation
1	Text length = 50 characters	50	Count the number of characters in the text.
2	Fixed width = 100 px	100	Width of the auto-height text box is fixed.
3	Characters per line = 100 / 5	20	Estimate characters fitting in one line.
4	Number of lines = ceil(50 / 20)	3	Calculate how many lines the text wraps into.
5	Line height = 14 px	14	Height of each line of text.
6	Total height = 3 * 14	42	Total height needed to fit all lines.

The auto-height text box height is 42 px to fit wrapped text within fixed width 100 px.

Variable Tracker

Variable	Value
Text length	50 characters
Fixed width	100 px
Average character width	5 px
Characters per line	20
Number of lines	3
Line height	14 px
Total height	42 px

Key Moments

What determines the width of an auto-width text box?

How is the height of an auto-height text box calculated?

Why does the auto-height text box height increase?

Sheet Trace Quiz - 3 Questions

What happens to the width of an auto-width text box when text length increases?

A Both width and height stay fixed

B Width increases to fit text in one line

C Width stays fixed and height increases

D Width decreases to fit text

Key Result

Auto-width text boxes adjust width to fit text in one line, keeping height fixed. Auto-height text boxes keep width fixed and adjust height to fit wrapped text lines.

Transcript

In Figma, auto-width text boxes grow horizontally to fit the entire text in a single line, so their width changes but height stays the same. Auto-height text boxes keep their width fixed and grow vertically to fit the text wrapped in multiple lines. We calculate the height by dividing the text length by how many characters fit per line, then multiplying by the line height. This helps designers control text layout effectively.

Practice

1. What happens to an auto-width text box in Figma when you add more text on a single line?

easy

A. The text box gets wider but the height stays the same.

B. The text box gets taller but the width stays the same.

C. The text box stays the same size.

D. The text box gets both wider and taller.

Solution

1. Step 1: Understand auto-width behavior

   An auto-width text box expands horizontally as more text is added on the same line.

2. Step 2: Check height behavior

   The height remains fixed because the text does not wrap to a new line.

3. Final Answer:

   The text box gets wider but the height stays the same. -> Option A

4. Quick Check:

   Auto-width means width changes, height fixed [OK]

Hint: Auto-width grows sideways, height stays fixed [OK]

Common Mistakes:

• Thinking height changes with more text on one line
• Confusing auto-width with auto-height behavior
• Assuming box size stays fixed always

2. Which of the following is the correct way to set a text box to auto-height in Figma?

easy

A. Select the text box and choose 'Fixed Size' in the properties panel.

B. Select the text box and choose 'Auto Width' in the properties panel.

C. Select the text box and manually drag the height to fit text.

D. Select the text box and choose 'Auto Height' in the properties panel.

Solution

1. Step 1: Identify the property for auto-height

   In Figma, setting a text box to auto-height is done by selecting 'Auto Height' in the properties panel.

2. Step 2: Eliminate other options

   'Fixed Size' locks dimensions, 'Auto Width' changes width, and manual dragging is not automatic resizing.

3. Final Answer:

   Select the text box and choose 'Auto Height' in the properties panel. -> Option D

4. Quick Check:

   Auto-height is set by choosing 'Auto Height' [OK]

Hint: Pick 'Auto Height' option to grow height automatically [OK]

Common Mistakes:

• Choosing 'Auto Width' instead of 'Auto Height'
• Thinking manual drag sets auto-height
• Confusing 'Fixed Size' with auto resizing

3. Given an auto-height text box with a fixed width of 200px, what will happen if you paste a paragraph of text that wraps into 5 lines?

medium

A. The text box height will increase to fit the 5 lines.

B. The text box will shrink to fit the text.

C. The text box size will stay fixed and text will overflow.

D. The text box width will increase to fit the text.

Solution

1. Step 1: Understand auto-height with fixed width

   Auto-height text boxes keep width fixed but grow taller as text wraps to new lines.

2. Step 2: Apply to 5-line paragraph

   Since the paragraph wraps into 5 lines, the height will increase to fit all lines without cutting off text.

3. Final Answer:

   The text box height will increase to fit the 5 lines. -> Option A

4. Quick Check:

   Auto-height means height grows, width fixed [OK]

Hint: Auto-height grows down with wrapped lines [OK]

Common Mistakes:

• Assuming width changes with auto-height
• Thinking text overflows instead of box growing
• Confusing auto-width behavior here

4. You set a text box to auto-width but notice the height changes unexpectedly when you add text. What is the most likely cause?

medium

A. The font size is too small to affect height.

B. The text box has a fixed width and height.

C. The text box is actually set to auto-height, not auto-width.

D. The text box is locked and cannot resize.

Solution

1. Step 1: Analyze unexpected height change

   If height changes when adding text, the box is likely set to auto-height, which grows vertically.

2. Step 2: Confirm setting mismatch

   Since auto-width should keep height fixed, the unexpected height change means the setting is not auto-width.

3. Final Answer:

   The text box is actually set to auto-height, not auto-width. -> Option C

4. Quick Check:

   Height changes mean auto-height setting [OK]

Hint: Height changes? Check if auto-height is set instead [OK]

Common Mistakes:

• Assuming fixed size allows height change
• Ignoring the actual text box setting
• Thinking font size affects resizing mode

5. You want a text box that keeps a fixed width of 300px but automatically adjusts height as the user types multiple lines. Which setting should you choose and why?

hard

A. Auto-width, because it grows width with text.

B. Auto-height, because it grows height with wrapped lines.

C. Fixed size, because it keeps both width and height fixed.

D. Manual resize, because auto settings don't allow height changes.

Solution

1. Step 1: Identify requirement for fixed width and variable height

   The text box must keep width fixed at 300px but grow taller as lines increase.

2. Step 2: Match setting to requirement

   Auto-height keeps width fixed and adjusts height automatically with wrapped lines, fitting the need.

3. Step 3: Eliminate other options

   Auto-width changes width, fixed size locks both dimensions, manual resize is not automatic.

4. Final Answer:

   Auto-height, because it grows height with wrapped lines. -> Option B

5. Quick Check:

   Fixed width + growing height = Auto-height [OK]

Hint: Fixed width + variable height? Choose auto-height [OK]

Common Mistakes:

• Choosing auto-width which changes width
• Thinking fixed size allows auto height
• Believing manual resize is automatic