Testimonial ROI Calculator
Estimate how much revenue you could gain by adding customer testimonials to your website. Enter your traffic, conversion rate, and average order value to see projected ROI.
Calculate the revenue impact of adding testimonials to your website
Short answer
The free Testimonial ROI Calculator estimates the revenue testimonials could add: enter monthly visitors, your conversion rate and average order value, and it applies a conservative 1.5x conversion lift to compare current and projected monthly and annual revenue. The 1.5x figure is a cautious assumption, far below the Spiegel Research Center's 270% finding for products with five reviews versus none.
How It Works
Enter your monthly website visitors
Input your current conversion rate and average order value
See projected revenue increase based on a conservative conversion lift estimate
Compare your current and projected monthly and annual revenue
Features
Real-time calculations with animated results
Monthly and annual revenue projections
Before and after comparison with and without testimonials
Conservative 1.5x conversion lift based on Spiegel Research Center findings
Slider inputs for quick adjustments
Frequently Asked Questions
How accurate is the ROI calculator?
The calculator uses a conservative 1.5x conversion lift estimate. The Spiegel Research Center found that displaying reviews can increase conversion rates by up to 270%. We deliberately use a conservative figure to keep projections realistic — your actual results may be higher or lower.
What data do I need to use the calculator?
Just three numbers: monthly website visitors, current conversion rate, and average order/deal value. Use the sliders to adjust and see results in real time.
Why a 1.5x conversion lift?
The Spiegel Research Center's research is one of the most cited studies on review impact. They found increases of up to 270% (3.7x), but results vary widely by industry and implementation. We use 1.5x as a conservative, credible starting point.
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How the testimonial ROI calculator works
The calculator applies a fixed 1.5x lift to your current conversion rate and compares revenue with and without testimonials.
The formula
- Current monthly revenue = monthly visitors × conversion rate × average order value
- Projected conversion rate = current conversion rate × 1.5
- Projected monthly revenue = monthly visitors × projected conversion rate × average order value
- Monthly increase = projected monthly revenue − current monthly revenue
- Annual increase = monthly increase × 12
Worked example
| Monthly visitors | 10,000 |
|---|---|
| Current conversion rate | 2% |
| Average order value | $100 |
| Current monthly revenue | $20,000 |
| Projected conversion rate | 3% |
| Projected monthly revenue | $30,000 |
| Monthly increase | +$10,000 |
| Annual increase | +$120,000 |
| Revenue increase | +50% |
Based on a conservative 1.5x conversion lift from adding testimonials. The Spiegel Research Center found that displaying reviews can increase conversion rates by up to 270%. We use a conservative estimate to keep projections realistic.