nonquantifiable

/nɑnˈkwɑntəˌfaɪəbəl/
adjective
  1. Not able to be measured or expressed as a number or amount.
    • Happiness is often nonquantifiable, making it hard to compare across cultures.
    • In art, the emotional impact of a painting is nonquantifiable.
    • The value of a good education includes many nonquantifiable benefits, like critical thinking skills.
Antonyms