Ratio to Fraction Calculator

Turn ratio a : b into a fraction, decimal, and each part as a fraction of the total.

Ratio a : b

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Your Results

Enter two numbers; b cannot be zero.

What this shows

Given a ratio a : b:

  • a ÷ b — the decimal value of the first quantity per one unit of the second (when b is not zero).
  • a / b — the same relationship as a simplified fraction.
  • a as part of (a+b) and b as part of (a+b) — each side as a fraction of the combined total (useful for recipe or mix “share of the whole”).