Step 1: Start with the fraction 13/3.

Step 2: To convert a fraction into a percentage, divide the numerator by the denominator.

13 ÷ 3 = 4.3333

Step 3: Multiply the result by 100 to get the percentage.

4.3333 × 100 = 433.33%

Final Answer: 13/3 as a percentage is 433.33%.