Marketing Calculators
ROI Calculator
Work out the return on a marketing campaign, website, tool or any investment.
Runs entirely in your browser — nothing you enter is sent or stored.
How it works
ROI = (return − investment) ÷ investment × 100. Annualised ROI = (return ÷ investment)^(12 ÷ months) − 1, which lets you compare a 3-month campaign fairly against a 2-year project.
Frequently asked questions
Should I use revenue or profit as the return?
Profit (gross margin) gives the honest picture. Revenue-based ROI flatters campaigns that sell low-margin products.
What is a good marketing ROI?
It depends on margins, but a 5:1 revenue-to-spend ratio (400% ROI) is a common benchmark; below 2:1 is rarely profitable.