Star Rating to Percentage Calculator
Convert a 1–5 star rating to a percentage score and letter grade. Free star rating calculator for reviews and reputation tracking.
Enter any star rating (e.g. 4.2) to convert it to a percentage score and letter grade.
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Frequently asked questions
How do you convert stars to percentage?
Divide the star rating by 5 and multiply by 100. For example, 4.2 stars = (4.2 / 5) × 100 = 84%.
What letter grade is a 4.5 star rating?
4.5 stars = 90% = A+. Our calculator converts any rating to both a percentage and a letter grade.
Can I use this for Google reviews?
Yes. Enter your average Google review rating to see how it translates to a percentage score.
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