The formula
Monthly Google reviews equals completed appointments per month multiplied by review conversion rate. That is the whole model. Everything a review platform does is an attempt to move the second number.
Completed appointments per month × review conversion rate = reviews per month
A practice seeing 25 patients a day, five days a week, completes roughly 540 appointments a month. At 5% conversion that is 27 reviews. At 20% it is 108. Same practice, same patients, same dentists. The only thing that changed is whether the patient saw the message and felt like replying.
Reviews per month by appointment volume and conversion rate
Find your completed appointments per month down the left, then read across. To place yourself on this table, divide the reviews you received last month by the appointments you completed last month. That is your current conversion rate, and it is the only number worth holding a new platform to.
| Appointments / month | 3% | 5% | 10% | 15% | 20% | 25% |
|---|---|---|---|---|---|---|
| 250 | 8 | 13 | 25 | 38 | 50 | 63 |
| 400 | 12 | 20 | 40 | 60 | 80 | 100 |
| 540 | 16 | 27 | 54 | 81 | 108 | 135 |
| 750 | 23 | 38 | 75 | 113 | 150 | 188 |
| 1,000 | 30 | 50 | 100 | 150 | 200 | 250 |
Arithmetic only, rounded to the nearest whole review. Conversion rate is reviews left divided by completed appointments contacted. Your own rate depends on your channel, your timing and your patient list.
Why the conversion rate matters more than the monthly fee
The same practice, 540 completed appointments a month, over twelve months. The gap between a 5% channel and a 15% channel is not a rounding difference. It is the difference between catching your competitors and not.
5%
A low-converting request
27 reviews a month
324 reviews a year
15%
Engaged messaging channel
81 reviews a month
972 reviews a year
20%
Top of the achievable range
108 reviews a month
1,296 reviews a year
What a Google review actually costs you
Monthly fee divided by reviews produced. This is the only number that lets you compare a £99 tool with a £450 one honestly, and it is the calculation we would want you running against us.
| Reviews per month | At £99 / month | At £450 / month | Reality check |
|---|---|---|---|
| 25 | £3.96 | £18.00 | A quiet month, or a small list |
| 50 | £1.98 | £9.00 | The break-even point against a cheap email tool |
| 75 | £1.32 | £6.00 | A realistic steady state for a busy single site |
| 100 | £0.99 | £4.50 | Strong. What we would want you holding by month three |
| 125 | £0.79 | £3.60 | Top end for a single site at 540 appointments a month |
These are divisions on published list prices at hypothetical review volumes. They are arithmetic, not a measured result: SuiteGrowth has not published a cost per review of its own, because we have not published a conversion rate we would stand behind across every practice. Excludes VAT and any per-message charges. Several UK platforms bill SMS separately on top of the monthly fee, so check whether the headline price is the price.
The honest reading of that table
A cheap email tool producing 25 reviews a month costs about £4 per review. SuiteGrowth producing 25 a month would cost £18, and you should not buy us for that. The expensive platform only earns its price by producing materially more, which is why the conversion rate is the question and the monthly fee is not. Below roughly fifty reviews a month, buy the cheaper tool.
The benchmark to hold any vendor to
Put this to every platform on your shortlist, in writing, before you sign anything.
“We complete roughly [your number] appointments a month. How many Google reviews should we expect per month once fully running, and what is the denominator behind the conversion rate you are quoting?”
If the answer is 20 to 30 a month, you do not need an expensive platform. Buy the cheapest tool that reaches your patients.
If the answer is 70 to 100 a month, a premium platform starts to justify itself on cost per review alone, before you count what those reviews do to your local search ranking.
If the answer is 100 or more consistently, the platform is paying for itself several times over and the monthly fee stops being the interesting part of the conversation.
If they will not give you a number, or give you one without asking your appointment volume, they are guessing and so are you.
What we have actually recorded
Two published results, both checkable, both with their windows stated. Neither is a promise about your practice.
Deepcar Dental Care, Sheffield
108 Google reviews accumulated over about eight years. 183 added in the first 30 days on SuiteGrowth, at a 5.0 star average. You can count them yourself on their public Google profile rather than taking our word for it.
A first month includes a one-time contact of the practice's whole historic list. It is not the recurring rate.
A UK practice running Software of Excellence
Live 31 August 2026. 28 new Google reviews in the first thirteen days of September, against the 4.2 a month its previous review platform had averaged over the preceding forty-three months. Roughly six and a half months of its old run rate, in under a fortnight.
The full head to head, with its methodWe would rather show you the arithmetic and let you apply your own conversion assumption than quote you a headline. If you want a range for your specific appointment volume before you speak to anyone, ask us and we will give you one in writing.
Frequently asked questions
How many Google reviews should a dental practice get per month?
It is entirely a function of two numbers: how many appointments you complete, and what percentage of those patients leave a review. A practice completing 540 appointments a month gets 16 reviews at 3% conversion, 54 at 10% and 108 at 20%. If you already run an email tool, divide your own monthly review count by your monthly completed appointments. That is your real conversion rate and it is the only one worth comparing against. Any answer to this question that does not start by asking your appointment volume is guesswork.
What is a good review conversion rate for a dental practice?
There is no published industry figure we would stand behind, so do not take one from a vendor, us included. Work out your own: divide the reviews you received last month by the appointments you completed last month. That number is your benchmark, and any platform you are considering should be made to beat it on your own denominator. Above 25% sustained is unusual and you should ask to see the denominator before believing it.
What is a reasonable cost per Google review?
Divide the monthly platform cost by the reviews it actually produces, not by the reviews it promises. At £450 a month, 50 reviews costs £9 each, 75 costs £6 and 100 costs £4.50. A £99 a month tool producing 25 reviews costs about £4 each, which is competitive, so the cheaper tool genuinely wins at low volume. The expensive tool only wins if it produces materially more.
Is 100 Google reviews in 30 days realistic for a dental practice?
For a practice completing around 540 appointments a month, 100 reviews is about 18.5% conversion, which is ambitious but achievable on an engaged messaging channel. It is far easier in month one, because the practice's entire historic patient list is contacted once. The number that matters is month four, when volume is set purely by completed appointments.
Can getting too many Google reviews at once look suspicious?
Google's policy treats unusual volumes or patterns of review contributions as a possible signal of manipulation, so it is a fair thing to ask about. The distinction Google draws is authenticity, not speed. Reviews from real patients with real appointments writing in their own words are what the policy is designed to protect. A steady sixty to a hundred a month sustained is a healthier profile than one large spike followed by silence, and it is also worth more for local search because recency is a ranking factor.
How do I work out whether a review platform is worth the money?
Take your completed appointments per month, multiply by the conversion rate the vendor claims, and divide the monthly fee by the result. Then ask the vendor to state the conversion rate in writing with the denominator attached. If they cannot tell you how many messages were sent to produce the reviews they are quoting, the rate is not a measurement.
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