Marketing ROI Calculator
Marketing Return on Investment (ROI) measures the profitability of marketing campaigns relative to their cost. A positive ROI means the campaign generated more revenue than it cost. ROAS (Return on Ad Spend) is a related metric that shows gross revenue per pound spent on ads, without subtracting costs.
- 1ROI = (Revenue − Marketing cost) / Marketing cost × 100
- 2ROAS = Revenue / Marketing cost
- 3A ROAS of 4× means £4 of revenue for every £1 spent
- 4For accurate ROI, attribute revenue correctly to the campaign — use UTM tracking, CRM data
Spent £5,000 on Google Ads, generated £22,000 revenue=ROI: 340% · ROAS: 4.4×(22,000 − 5,000) / 5,000 × 100 = 340%
Spent £10,000, revenue £8,000=ROI: −20% (loss) · ROAS: 0.8×Negative ROI — campaign losing money
| Channel | Average ROAS | Good ROAS |
|---|---|---|
| Google Search Ads | 2–4× | 5×+ |
| Google Shopping | 3–5× | 7×+ |
| Facebook / Meta Ads | 2–3× | 4×+ |
| Email Marketing | 30–40× | 40×+ |
| SEO (content) | ∞ (organic) | High long-term value |
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