Scale or scales may refer to:

Common meanings



Science and mathematics


  • Scale (anatomy), a rigid plate which grows out of the skin of various animals
  • Scale (dermatology), a secondary skin lesion in humans that resembles animal scales
  • Scale (insect anatomy), an anatomical feature of the wings of moths and butterflies
  • Scale insect, a waxy coated animal that resembles a fish scale
  • Scale, a type of trichome, any flat epidermal outgrowth in botany
  • Bulb scale, the storage layers of a plant bulb

Chemistry and materials science

  • Scale (chemistry), the range of mass or volume of a chemical reaction or process
  • Mill scale, the flaky surface on hot rolled steel, consisting of iron oxides
  • Fouling, sometimes called "scale", a buildup of unwanted substances on a submerged surface


Other sciences

Other uses

See also

  • Mizan (Scale in English), a treatise on Islam by Javed Ahmed Ghamidi
  • Scalability, a concept in computer science and electronics
  • Scaling (geometry), a linear transformation that enlarges or shrinks objects