Sellers below 4.3 stars have no idea if recovery takes 40 reviews or 400. Enter your current rating, review count, target, and the average star rating of your new reviews. Get the exact number and the months to get there.
Reviews needed · months to target · verdict
This assumes every new review lands at the average you entered. Real ratings vary, so treat the number as a tight target, not a guarantee. Never buy or incentivize reviews against Amazon policy.
Want this breakdown in your inbox, plus the review-request timing that lifts your rating fastest?
A rating slips to 4.1 and the seller panics. They start chasing reviews with no target, no plan, and no idea how many it takes to climb back. Some grind for months toward a number that was never reachable in the first place.
The math is not hard, it is just skipped. Your rating is a weighted average. To move it, new reviews have to outweigh the old ones, and the strength of those new reviews decides how many you need. A pile of five-star reviews moves the needle fast. A trickle of four-star reviews barely moves it at all, and if they average below your target, the target is impossible.
This calculator runs that weighted average and tells you the exact count, plus how long it takes at your current pace.
Current rating, review count, your target, and the average stars your new reviews earn.
We solve for how many new reviews it takes to pull your overall rating up to the target.
Reviews needed, months at your pace, and a recoverable or relaunch call.
It depends on how far your rating is from the target and how strong your new reviews are. The formula multiplies your current review count by the gap between target and current rating, then divides by the gap between your new-review average and the target. This calculator returns the exact number.
Your average can never rise above the rating of the reviews coming in. If your target is 4.5 but your incoming reviews average 4.4, no amount of new reviews pulls you to 4.5. When that happens the verdict flips to relaunch, because the product needs to change before the rating can.
Divide the reviews you need by your current reviews per month. Need 120 reviews and earn 15 a month, that is eight months at today's pace. The calculator shows both the count and the timeline so you can decide whether to accelerate velocity or relaunch.
Yes. Run it as many times as you want with no account. Drop your email only if you want the breakdown sent to your inbox.
Rating is one lever. The bigger one is how much revenue your listing gives away before anyone reads a review. Our free Profit Audit scans your page and shows, in dollars, what a weak listing costs you per thousand visitors.
Run My Free Profit Audit → Takes about 2 minutes. You get the exact fixes, not a sales pitch.