Free calculators and estimators to help with campaign planning — no sign-up required.
What Are These?
Stand-alone tools available at adpredictor.ai/tools. No account needed. No sign-up. Just open and use.
ROAS Calculator
What it does: Calculate your return on advertising spend.
"I spent €500 on ads. Got €1,800 in revenue. What's my ROAS?"
How to Use
- Go to Tools → ROAS Calculator
- Enter revenue generated (€1,800) and ad spend (€500)
- Get result: 3.6x ROAS
What It Means
- 3.6x ROAS = for every €1 spent, you made €3.60 back
- 2x ROAS = break-even after costs
- 1x ROAS = you lost money
Industry Benchmarks
| Industry | Good ROAS | Excellent ROAS |
|---|---|---|
| E-commerce | 2-3x | 4x+ |
| SaaS | 3-5x | 7x+ |
| Services | 4-6x | 8x+ |
| Lead gen | 2-4x | 5x+ |
Budget Calculator
What it does: Figure out your monthly budget based on goals.
"I want 100 conversions per month at €20 cost each. What budget?"
How to Use
- Go to Tools → Budget Calculator
- Enter target conversions (100) and target CPA (€20)
- Get result: €2,000/month budget needed
Reverse Calculator
You can also calculate backwards: You have €1,500 to spend, your CPA is €15. How many conversions? Answer: 100 conversions.
CPA Estimator
What it does: Estimate your cost per acquisition based on traffic.
How to Use
- Go to Tools → CPA Estimator
- Enter monthly budget (€1,000), expected CTR (3%), and conversion rate (2%)
- Get estimate: €16.67 CPA
These are estimates. Actual CPA depends on your landing page, product, competition, and seasonality.
When to Use Each Tool
| Tool | When |
|---|---|
| ROAS Calculator | Track past performance, compare campaigns |
| Budget Calculator | Plan monthly spend, forecast revenue |
| CPA Estimator | Estimate costs before launching, set targets |
Tips for Accurate Estimates
Be Realistic
- CTR: Google average is 1.5-2%. SaaS is higher (3-5%). Retail is lower (1-2%).
- Conversion rate: 1-3% is typical. 5%+ is excellent.
- CPA: Varies wildly by industry. Don't compare to unrelated industries.
Test Before Scaling
- Use estimator for rough budget
- Run a small test (€500-€1,000)
- Measure actual CTR, conversion rate, CPA
- Adjust budget based on real numbers
- Scale winners
When to Go Beyond Free Tools
Free tools work great for quick estimates and planning. But if you want historical tracking, automated AI recommendations, real-time alerts, keyword management, and multi-campaign comparison — create an account to get full AdPredictor features.