Google Ads
7min
18.10.2025

Is Your Google Ads Budget Working Efficiently? (Explaining the Lin Rodnitzky Ratio)

Misha
Senior Auditor
7min
18.10.2025

It’s a question every Google Ads advertiser should be asking every month — if not every week:

“Is my account spending its budget efficiently?”

Answering that question isn’t as easy as it sounds. You could go through every single search term and decide whether each click was worth the cost, but with thousands of search terms, that would take hours or even days.

What if you could summarize your account efficiency in one simple score?

Turns out, you can - with the Lin Rodnitzky Ratio.

📈 What Is the Lin Rodnitzky Ratio?

The Lin Rodnitzky Ratio (LRR) is a quick and powerful indicator of how efficiently your Google Ads account is spending its budget.

It’s calculated as:

LRR = CPA (All Search Queries) ÷ CPA (Search Queries with ≥1 Conversion)

In plain language, it compares the cost efficiency of everything you’re paying for versus what’s actually converting.

A low ratio means you’re spending wisely and efficiently.
A high ratio means too much of your budget is going toward clicks that don’t convert.

⚙️ Automating the Calculation with a Script

Manually calculating LRR across dates is tedious.
That’s why Nils Rooijmans built a free Google Ads Script that automates the process and even visualizes it over time.

👉 Try it here:
Google Ads Script – Lin Rodnitzky Ratio

The script automatically tracks how your LRR evolves, giving you a clear view of when efficiency improves or declines.

🧭 Why You Should Care

The Lin Rodnitzky Ratio is a simple but powerful diagnostic tool. It doesn’t replace deep analysis — but it’s a fast, reliable pulse check of how your account performs.

Based on data from hundreds of accounts reviewed by the ratio’s creators, here’s how to interpret your score:

👉 Rule of thumb:Healthy accounts usually sit between 1.5 and 2.5 depending on their goals.

📊 Example: Tracking LRR Over Time

The beauty of this script is the ability to see how your ratio changes over time.
Below is an example of an LRR graph generated between June and November 2024, showing how efficiency evolves with campaign changes, new keyword tests, and optimization cycles.

If you spot sudden shifts, it’s usually a sign of something deeper, like a change in match types, automated recommendations, or adjustments to DSA targeting.

You can immediately spot trends that correlate with optimizations, tests, or major campaign changes.

💡 How to Use It in Audits

At Ad Hackers, we use the Lin Rodnitzky Ratio as part of our Google Ads audit framework.
Here’s how we interpret and act on it:

  • LRR > 2.5 (High ratio)
    → The account is overspending. Add negatives, reduce DSA budgets, or use tighter keyword match types.
    Best for clients who prioritize short-term ROI.
  • LRR < 1.5 (Low ratio)
    → The account is too cautious. Expand with DSAs, test broader match types, and explore new segments.
    Ideal for growth-oriented strategies.
  • Sudden changes
    → Investigate causes — e.g., if auto-applied recommendations added broad keywords, turn those off and regain control.

💡 Key Takeaways

  • The Lin Rodnitzky Ratio condenses complex Google Ads data into one efficiency score.
  • Ideal for fast audits, performance tracking, and reporting.
  • Healthy range: 1.5–2.5 — adjust your strategy depending on whether you need growth or profitability.
  • Use the free script by Nils Rooijmans to automate the tracking and visualize long-term efficiency.

🔗 Resources

At Ad Hackers, we help performance-driven brands and agencies make smarter decisions with data.
Metrics like the Lin Rodnitzky Ratio help our clients understand not just where money goes — but how well it works.

Want to find your account’s efficiency score?
👉 Request a free audit

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