Google Review Calculator

How many 5-star reviews do you need to reach your target Google rating? Find out in seconds.

Why does your Google rating matter for a local business?

Your star rating is one of the first things people see when they find your business on Google Search or Google Maps. It shapes whether they click on your listing, call you or visit, and it is part of how Google decides which businesses to show in the local pack.

1–5Google shows your average on a 5-star scale, rounded to one decimal
5★every new 5-star review pulls your average up, faster when you have few reviews
4.5a realistic target that looks both strong and credible

How does the Google rating calculator work?

The calculator uses a simple weighted-average formula to find the exact number of 5-star reviews you need to reach your target rating. You only need three numbers:

1
Current number of reviews

The review count shown on your Google Business Profile.

2
Current average rating

Your star rating out of 5, as shown by Google.

3
Target rating

The rating you want to reach (for example 4.5).

The review calculator then works out how many new 5-star reviews you need, taking into account the weight of the reviews you already have. Use it to set realistic goals for your review strategy.

How many 5-star reviews do I need to raise my Google rating from 4.0 to 4.5?

It depends on how many reviews you already have. The more reviews you have, the more it takes to move your average.

10 existing reviews
~105-star reviews to go from 4.0 to 4.5
50 existing reviews
~505-star reviews to go from 4.0 to 4.5
200 existing reviews
~2005-star reviews to go from 4.0 to 4.5

That is why it pays to start collecting reviews early: the fewer reviews you have, the bigger the impact each new 5-star review has on your overall rating.

What Google rating should you aim for?

< 4.0Too low
4.0 — 4.2Fair
4.3 — 4.7Ideal
4.8 — 5.0Too perfect?

A rating below 4.0 turns many potential customers away. On the other hand, a perfect 5.0 can look too good to be true. Your rating is also one of the signals Google looks at for the local pack. Aim for 4.5 as a realistic goal.

How to get more 5-star reviews on Google

Getting good reviews is not a matter of luck. Here is what successful local businesses do:

📩
Ask every time

After every visit or purchase, send a text or an email with a direct link to your Google review form. Ask all customers, not just the happy ones: Google does not allow selective review requests.

🔗
Make it easy

Use a short link or a QR code that opens the Google review form directly.

💬
Reply to every review

Positive and negative alike. Customers who see replies are more likely to leave a review of their own.

👥
Train your team

Everyone who talks to customers should know when and how to ask for a review.

⚡
Automate review requests

Tools like Localranker can send review requests automatically after each visit or purchase.

Do Google reviews affect local SEO?

Yes. Google's own guidance says that review count and rating factor into local search ranking, as part of a business's prominence. Three signals matter:

📈Volume

The more reviews you have, the more established and popular your listing looks.

⭐Average rating

A high rating is a quality signal that helps your listing stand out.

🕐Recency

Recent, steady reviews show that your business is active.

By actively collecting reviews, you improve both your reputation and your visibility on Google Maps and in the local pack.

Ready to grow your local visibility?

Franchises, multi-location brands and agencies: Localranker helps you manage local SEO at scale.

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