Rationalize Denominator Calculator 1/√a → √a/a. a (denominator under √) Rationalized √2/2 Step-by-step with your numbers: 1. Values used: 2. a (denominator under √) = 2 3. Rationalized = √2/2 Did we solve your problem today? 👍 Yes 👎 No Thanks for the feedback! Multiply top and bottom by √a. FAQ Why? Standard form for expressions. Related calculators Simplify Radicals Calculator Simplify √(a²·b) = a√b. Square Root Calculator Find the square root of a number. Simplify Fractions Calculator Reduce a fraction to its lowest terms.