Free tool · Google review calculator

How many 5-star reviews do you actually need?

Enter your current Google rating and review count below. We'll tell you the exact number of 5-star reviews needed to hit your target — accounting for how Google really rounds your rating.

🎯 How many reviews do I need?
📅 When will I get there?

Fill in your numbers above and hit calculate.

📌 Google displays ratings rounded to the nearest tenth — so a true average of 4.76 shows as 4.8, but 4.74 shows as 4.7. Most calculators ignore this. We build the rounding threshold into the number above, so it's the number that actually changes what customers see.

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Why this number matters

A few reviews move your rating more than you'd think.

Once a business has 40, 80 or 150+ reviews, a single new review barely moves the average — which is exactly why so many local businesses feel stuck at 4.2 or 4.3 stars no matter how good the work is. Knowing the exact number needed turns a vague goal ("get more reviews") into a concrete target you can actually hit and track.

It's not linear

The more reviews you already have, the more new 5-star reviews it takes to shift the average by even 0.1. This calculator does the maths instantly for your exact numbers.

Rounding matters

Google shows your rating to one decimal place. Aiming for the raw target rating instead of the rounding threshold means you'll fall just short — we correct for that.

A number you can act on

"We need 34 more 5-star reviews" is a target your whole team can rally around — far more useful than "let's ask more customers for reviews".

How Google actually calculates your rating

It's a simple average — with one twist.

Your Google Business Profile rating is the mean of every star rating you've ever received (1 to 5), recalculated every time a new review comes in or an old one is removed. There's no special weighting for recency and no separate "true rating" hidden anywhere — what you see is the average, rounded to one decimal place for display.

That rounding is the twist most business owners — and most calculators — miss. A true average of 4.75 could round up to 4.8; a true average of 4.749 shows as 4.7. When you're chasing a specific displayed number, that half-a-review's worth of difference is exactly where this calculator earns its keep.

Questions

Everything you might be wondering.

How many 5-star reviews do I need to raise my Google rating? +
It depends on your current rating and how many reviews you already have — the more reviews you have, the more new 5-star reviews it takes to move the average. Use the calculator above to get the exact number for your business.
Does Google round star ratings? +
Yes — Google displays your rating rounded to the nearest tenth (4.46 shows as 4.5, but 4.44 shows as 4.4). This calculator builds that rounding threshold into its maths, so the number you get is the one that actually moves what customers see.
Can I ever reach a perfect 5.0 rating? +
Only if every review you've ever received is a 5-star review. As soon as you have any review below 5 stars, a 5.0 average becomes mathematically impossible to sustain long-term — most healthy local businesses aim for 4.7–4.9 instead.
How quickly can I raise my Google rating? +
Switch to the "When will I get there?" tab, enter roughly how many new 5-star reviews you can realistically collect each month, and you'll get an estimated date based on the exact number still needed.
Does responding to reviews affect my star rating? +
No — replying to reviews doesn't change the numerical average, but it does influence whether unhappy customers update their rating, and it signals to future customers (and Google) that the business is active and cares about feedback.
Stop calculating. Start collecting.

RepBeacon gets you those 5-star reviews automatically.

The moment a job's done, a friendly text goes out asking for a review — no spreadsheets, no chasing, no manual follow-ups. Most businesses see their first new reviews within 48 hours.

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Last updated: 1 August 2026