Free calculator
Google Ads ROI calculator for orthodontic and dental practices
This calculator turns your Google Ads spend, cost per click and conversion rates into the numbers that matter to a practice: cost per inquiry, cost per new start and production per dollar spent. With the example values below, $3,000 a month produces about 5.6 new starts, at roughly $533 per start and $9.40 of production for every $1 spent.
- Cost per start, not per click
- Nothing is saved or sent
- Last checked October 17, 2026
What you will need
- Monthly ad spend$
- Average cost per click$
- Click to inquiry rate%
- Inquiry to consult rate%
- Consult to start rate%
Calculator
Enter your account’s numbers
What each input means
Where to find each number
Use the last full month, or the last 90 days divided by three.
| Input | What it means | Where to find it |
|---|---|---|
| Monthly ad spend | What you pay Google each month | Google Ads, Campaigns view, Cost column |
| Average cost per click | Spend divided by clicks | Google Ads, Avg. CPC column |
| Clicks that become inquiries | Share of clicks that call or submit a form | Conversions divided by clicks, if tracking counts real inquiries only |
| Inquiry to consultation rate | Share of ad inquiries that book | Call log or practice software, filtered to ad leads |
| Consultation to start rate | Share of consultations that start treatment | Practice management software |
| Average treatment fee | Typical total fee for a full treatment | Fee schedule or average case value |
| Management fee | What you pay an agency or freelancer, if anyone | Your invoice |
How it works
The method
Every figure comes from your own inputs. Formula last checked October 17, 2026.
1. Clicks
Clicks = monthly ad spend ÷ average cost per click.
2. Inquiries, consultations and starts
Inquiries = clicks × click to inquiry rate. Consultations = inquiries × inquiry to consultation rate. Starts = consultations × consultation to start rate.
3. Cost per inquiry and per start
Total cost = ad spend + management fee. Cost per inquiry = total cost ÷ inquiries. Cost per new start = total cost ÷ starts.
4. Production per dollar
Production = starts × average treatment fee. Production per $1 = production ÷ total cost. This is revenue, not profit.
Worked example
One example, calculated in full
Example values only, not benchmarks.
| Step | Calculation | Result |
|---|---|---|
| Clicks | $3,000 ÷ $8 | 375 |
| Inquiries | 375 × 6% | 22.5 |
| Consultations | 22.5 × 50% | 11.25 |
| New starts | 11.25 × 50% | 5.6 |
| Cost per inquiry | $3,000 ÷ 22.5 | $133 |
| Cost per new start | $3,000 ÷ 5.625 | $533 |
| Production | 5.625 × $5,000 | $28,125 |
| Production per $1 | $28,125 ÷ $3,000 | 9.4x |
Common answers
Cost per new start by cost per click
Assumes $3,000 spend, 6% click to inquiry, 50% inquiry to consultation and 50% consultation to start.
| Cost per click | Clicks | New starts | Cost per new start |
|---|---|---|---|
| $4 | 750 | 11.3 | $267 |
| $6 | 500 | 7.5 | $400 |
| $8 | 375 | 5.6 | $533 |
| $12 | 250 | 3.8 | $800 |
Limits
When this estimate does not apply
Treat the result as an estimate, not a forecast.
Not covered
- Patients who saw an ad but booked later by another route
- Brand searches you would have won anyway
- Profit after treatment costs
Less reliable when
- Conversion tracking counts page views or duplicate calls
- Fewer than 100 clicks a month
- You changed campaigns during the month
Get advice instead when
- Deciding whether to stop a campaign
- Your account mixes several treatments
- Remarketing or audience rules for health ads apply
Who made and checked it
Built and checked by SEO Engine Boost
This tool was built by SEO Engine Boost and its method was checked by Dr. Mahmoud Elsheikh, a dentist completing a Master of Science in Dentistry in Orthodontics and an SEO consultant with more than five years of experience.
Last checked: October 17, 2026. Changes: first version.
FAQ
Google Ads ROI calculator FAQ
How does the Google Ads ROI calculator work?
It divides your monthly ad spend by your average cost per click to estimate clicks, then applies your click-to-inquiry, inquiry-to-consultation and consultation-to-start rates. Adding the management fee to ad spend gives the true cost per inquiry and per new start.
Where do I find my cost per click and conversion rates?
Cost per click and clicks are in your Google Ads account. Inquiry and start rates come from your call tracking, forms and practice management records, so the result is only as good as that tracking.
Why include the management fee?
Because it is part of what each new patient costs you. Comparing ad spend alone makes paid search look cheaper than it is.
What should I fix before spending more on ads?
Answer and return calls, and follow up consultations. More clicks only help if inquiries are handled well. See our guide on what to check before you spend on Google Ads.
Free tools
More free tools for orthodontic practices
- Marketing budget calculator
How many inquiries and starts a budget needs - Missed call revenue calculator
What unanswered calls cost each month - Patient lifetime value calculator
What one new patient is worth over time - Google reviews gap calculator
How far behind nearby practices your reviews are - Case acceptance rate calculator
How many consultations turn into starts - SERP snippet preview tool
How your title and description look in Google - Review reply generator
Privacy-safe replies to Google reviews - Google Business Profile checker
Score your map listing and see what to fix first
Want help acting on the numbers? See our Google Ads for orthodontists service, browse all free tools, or get a free growth audit.
Free growth audit
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- Your numbers, not averages
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