Somebody already asked that for you: <a href="https:&#x2F;&#x2F;physics.stackexchange.com&#x2F;questions&#x2F;4094&#x2F;is-the-planck-length-lorentz-invariant" rel="nofollow">https:&#x2F;&#x2F;physics.stackexchange.com&#x2F;questions&#x2F;4094&#x2F;is-the-plan...</a>