Free tool
Review Rating Calculator
Want to lift your star rating? Enter your current reviews and rating, your target, and the rating you expect from new reviews to see exactly how many you need.
Your numbers
Updates as you typeBetween 1 and 5
Up to 5
Must be higher than target
Nothing is saved or sent anywhere.
Result
Enter your numbers
The review rating formula
Reviews needed = Current reviews × (Target − Current) ÷ (New review rating − Target)Example calculation
You have 40 reviews averaging 4.2 and want to reach 4.6, expecting new reviews at 5 stars. Reviews needed = 40 × (4.6 − 4.2) ÷ (5 − 4.6) = 40 new 5-star reviews.
What your result means
The number shows the scale of the task. A big figure means rating change is a steady, ongoing effort, not a quick fix — and that protecting your rating by avoiding bad experiences matters as much as collecting good reviews.
Common mistakes
- Expecting one review push to transform a large existing average.
- Assuming every new review will be a perfect 5 stars.
- Only asking for reviews occasionally instead of building it into your routine.
The number tells you where you are. Not what to do next.
Reviews compound when you ask consistently — a weekly plan keeps that habit alive.
Cleverlio decides what your business should do this week and writes the work — the posts, the messages, the website copy. You review it and publish it yourself.
See what Cleverlio would doCommon questions
How many reviews do I need to raise my rating?
It depends on how many reviews you already have and how far you want to move the average. The more existing reviews you have, the more new high ratings it takes to shift the number.
How is the number of reviews needed calculated?
Reviews needed = current reviews × (target rating − current rating) ÷ (new review rating − target rating). It assumes each new review comes in at the rating you expect.
Why does it take so many reviews to move my average?
Your average is anchored by every review you already have. With a large review base, each new review has a smaller effect, so meaningful rating changes take volume and time.
What if my expected new rating is not 5 stars?
You can model any expected rating, but it must be higher than your target — otherwise new reviews would pull your average toward the target rather than above it, and it can never be reached.
How do I actually get more good reviews?
Ask every happy customer at the right moment, make leaving a review effortless with a direct link, and follow up. Consistency matters more than one-off pushes.