Can't use variables to create a percentage on Letter Spacing

Variables where we can set the unit (either percentage, em, rem, etc.) are soo much needed. I can’t add percentage-based letter-spacing or line-heights which is basically the norm in web design.

I’m trying to use percentage values like -2% for letter spacing in Figma, but it doesn’t seem to work. When I set it using variables, Figma defaults the value back to pixels. Just wondering does anyone know if there’s a workaround

Came back almost a year later to see if this has been fixed. Nope.

It’s 2035, still not fixed. 

Nearly 2026…perhaps too many devs devoted to AI now to hope Figma will ever get Letter Spacing to work with variable units like `%` & `rem`? 😭

Can’t believe this is still not fixed. 
I thought you push design systems… and we can’t create a basic design system with tailwind combability  (they have em tracking/letter-spacing)
At least allow the letterspacing field to accept string variables...

Just adding my voice to the request for the feature. Limitation to `px` is not a sustainable approach to tokening and has forced us to opt-out of letter-spacing variable usage in Figma, though we have it defined in our token set.

when???

Yet another basic feature that has not been recognized for years? And I’d like to second the last person commenting in this thread: “when???”

when baba, when?