Know your exact star counts? Get an exact answer
Your shown rating is already rounded. Type how many of each star you have and the calculator works from the true average instead.
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Why this is an estimate on Amazon
Amazon says its product star rating isn't a simple average. Its model looks at things like how recent a rating is and whether the buyer was verified. So treat the calculator as a close estimate. In plain average terms, a product at 4.1 with 120 ratings needs about 77 new 5-star ratings to show 4.5.
The ways Amazon allows
- The Request a Review button in Seller Central. One request per order, sent between 5 and 30 days after delivery.
- Amazon Vine, for brand registered sellers, where Amazon hands out units to its own reviewers.
- A product and listing that match what shows up at the door. Most 1-star ratings are "not as described".
Paying, refunding or gifting for reviews breaks Amazon's rules and can get the listing or the account pulled.
Want the bad reviews gone first? Read how to get bad reviews removed and how to appeal.
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See review requestsQuestions people ask
Does one 1-star review hurt a lot on Amazon?
On a 4.5 product with 50 ratings, one 1-star drops it to 4.43. Winning that back takes 7 five-star ratings.
Do ratings without a written review count?
Yes. Star ratings with no text count toward the product's stars.
Can a seller remove an Amazon review?
Sellers can report reviews that break Amazon's rules. See removing bad reviews on Amazon.