How to Use Number Variables in Figma for Dynamic Designs

In Figma, you create a number variable by defining it in the Variables panel and then use it to control properties like size or spacing dynamically. You can link this variable to elements’ properties, allowing easy updates across your design by changing the variable value once.

Syntax

To use a number variable in Figma, first create it in the Variables panel with a name and a numeric value. Then, apply it to a property by selecting the property and choosing the variable from the dropdown.

• Variable Name: A descriptive name for your number variable.
• Value: The numeric value assigned to the variable.
• Property Link: The design property (like width, height, or padding) where the variable is applied.

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Variables panel:
- Name: buttonHeight
- Type: Number
- Value: 40

Usage in design:
Select a rectangle > Height property > Choose variable 'buttonHeight'

Example

This example shows how to create a number variable named buttonHeight with a value of 40 and apply it to the height of a button rectangle. Changing the variable updates all buttons using it.

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1. Open the Variables panel in Figma.
2. Click 'Create variable' and select 'Number'.
3. Name it 'buttonHeight' and set the value to 40.
4. Select a button rectangle.
5. In the properties panel, click the height field.
6. Choose the 'buttonHeight' variable from the dropdown.
7. The button height now uses the variable.
8. Change 'buttonHeight' value to 50 in Variables panel.
9. All buttons linked to this variable update height to 50 automatically.

Output

Button height changes from 40 to 50 pixels dynamically when variable value updates.

Common Pitfalls

Common mistakes when using number variables in Figma include:

• Not assigning the variable to the correct property, so changes have no effect.
• Using variables with incompatible property types (e.g., applying a number variable to a color property).
• Forgetting to update the variable value, expecting manual changes on each element.

Always double-check the property type and ensure the variable is linked properly.

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Wrong:
- Assigning number variable to a text color property.

Right:
- Assign number variable only to numeric properties like width, height, or spacing.

Quick Reference

Step	Action	Notes
1	Open Variables panel	Use the right sidebar in Figma
2	Create new variable	Select 'Number' type
3	Name variable	Use descriptive names like 'buttonHeight'
4	Set numeric value	Example: 40
5	Select design element	E.g., rectangle for button
6	Link variable to property	Choose variable in property dropdown
7	Update variable value	Changes reflect on all linked elements

Key Takeaways

Create number variables in Figma's Variables panel to control numeric design properties.

Link number variables to properties like width or height for dynamic updates.

Changing a variable's value updates all elements using it automatically.

Avoid assigning number variables to incompatible property types like colors.

Use clear, descriptive names for variables to keep designs organized.