Yes, SCALE is a Scrabble word!

Letter values in Scrabble US: S 1, C 3, A 1, L 1, E 1.

Is it a valid word?

SCALE is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

an ordered reference standard
relative magnitude
the ratio between the size of something and a representation of it
a specialized leaf or bract that protects a bud or catkin
a thin flake of dead epidermis shed from the surface of the skin
(music) a series of notes differing in pitch according to a specific scheme (usually within an octave)
a measuring instrument for weighing; shows amount of mass
an indicator having a graduated sequence of marks
a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners)
a flattened rigid plate forming part of the body covering of many animals

measure by or as if by a scale
pattern, make, regulate, set, measure, or estimate according to some rate or standard
take by attacking with scaling ladders
reach the highest point of
climb up by means of a ladder
remove the scales from
measure with or as if with scales
size or measure according to a scale

SCALE was the Wordle answer on Aug. 3, 2024 (#1,141). Stuck on today’s? Use the Wordle helper.

Also: scale of measurement, graduated table, ordered series, scale leaf, musical scale, weighing machine.

Not playable in Scrabble US: DESCALE.