ROI (Return on Investment) measures the profitability of an investment. It is calculated as (Net Profit ÷ Cost of Investment) × 100.

A good ROI depends on context. For stocks, 7–10% annually is considered good. For marketing, 5:1 (500% ROI) is strong. For business projects, anything above your cost of capital.

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finance

ROI Calculator

Calculate the return on investment for any business decision — marketing spend, equipment purchase, or business investment.

ROI CalculatorFree · No signup

Initial Investment

Final Value / Return

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About This Calculator

Our ROI Calculator is designed specifically for UK businesses and individuals. All calculations use current 2025/26 rates and follow UK guidelines.

This tool is completely free to use with no signup required. You can use it as many times as you like. The results are instant and calculated in your browser — no data is sent to our servers.

Also known as

ROI calculatorreturn on investment calculatorROI calculator UKinvestment return calculatormarketing ROI calculator

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Last updated: 1 April 2026 · Rates for 2025/26 tax year