Google review calculator
Find out how many 5-star reviews it takes to raise your Google rating to the number you want, and work out the exact average behind the number on your profile. Free, no sign-up.
How many reviews to reach your target
1 to 5, as Google shows it
The count beside your stars
1 to 5
5 if every one is 5 stars
48five-star reviews in a row
80 reviews × (4.50 − 4.20) ÷ (5.00 − 4.50), rounded up.
| New reviews average | Reviews needed |
|---|---|
| 5.0 | 48 |
| 4.9 | 60 |
| 4.8 | 80 |
| 4.7 | 120 |
| 4.6 | 240 |
Work out your exact average
Google shows one decimal. Count your reviews by star rating to see the full number behind it.
Enter how many reviews you have at each star rating.
How the calculator works
Google says your review score is "the average of all ratings published on Google for that place or business" (its help page). Each new rating adds its stars to the total and one to the count, so the reviews you need are:
reviews now × (target − rating now) ÷ (new reviews' average − target)
Rounded up. Going from 4.2 on 80 reviews to 4.5 takes 80 × 0.3 ÷ 0.5, which is 48 five-star reviews in a row.
Plan with your real average
Customers leave 4s and 3s too, so every new review being 5 stars is the best case. Put the average of your recent reviews in the "New reviews average" box for a number you can plan around. If your recent reviews average 4.7, the same climb from 4.2 to 4.5 takes 120 reviews.
If your recent reviews average at or below your target, no number of them gets you there. The average only moves toward what new reviews average, which makes the service behind the reviews the real lever.
Why your profile might show a different number
The rating on your profile has one decimal, so the true average behind a 4.2 could be a little higher or lower, and Google doesn't document how it rounds. Count your reviews by star rating and use the exact average calculator above to see the full number.
Google also says that after someone leaves a new review, "it may take up to 2 weeks to get an updated review score." A review that's removed stops counting.
Raising your rating without breaking the rules
The dependable way up is more reviews from every customer, asked the same way each time. Google's review policy doesn't allow offering anything in return for a review, or asking only the customers you expect to be happy, and reviews that break it can be removed.
How to get more Google reviews puts the routine together, and how many Google reviews you need shows how to set a target from the businesses listed beside yours.
Questions
- How is the Google rating calculated?
- Google says the review score is the average of all ratings published on Google for the business. Add up the stars from every published rating and divide by the number of ratings. Google doesn't document any weighting, or how it rounds the one-decimal number on your profile.
- How many 5-star reviews do I need to get to 4.5?
- It depends on where you start. From 4.2 on 80 reviews, it takes 48 five-star reviews in a row; from 4.0 on 40 reviews, 40. Enter your own rating and count in the calculator. If some new reviews will be 4 stars, plan on more.
- How long does a new review take to change my rating?
- Google says it may take up to 2 weeks after someone leaves a review to get an updated review score. Check again after a couple of weeks before deciding the math is off.
- Do ratings without any text count?
- Yes. The score averages every published rating, and a star rating with no words moves the average exactly as much as a long review with the same stars.
- Can I raise my rating by getting bad reviews removed?
- Only reviews that break Google's content policy can be reported for removal, and an honest negative review usually doesn't. The dependable way to raise the average is more reviews from every customer, and calm replies to the critical ones.
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