Ecommerce tool

ROI Calculator

Measure return on investment as a percentage from gain and cost.

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Instant useNo sign up, quick result.

Practical outputBuilt for real everyday checks.

Clear next stepJump from result to related guides.

What this tool helps with

Calculate return on investment from gain and cost using a free ROI calculator.

Quick start

Enter your values, review the result and use the guide block below for a clearer explanation, example and related tools.

Gain (£)

Cost (£)

ROI

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Guide

How ROI is calculated

ROI compares the gain from an investment against the cost of that investment. It is useful for ad campaigns, product launches, software purchases and other business decisions.

Example

Example use case

If a campaign returns £1,000 from a £500 cost, ROI is 100%.

Frequently asked questions

What does a positive ROI mean?

It means the return is greater than the cost.

Can I use revenue instead of profit?

For a cleaner ROI estimate, use net gain rather than total revenue.

Why is ROI useful?

It helps compare whether time or money spent is producing value.

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Explore related tools

Use the related tools below to compare scenarios, check supporting numbers or solve nearby tasks faster.

Tool guide

How to use the roi calculator

Calculate return on investment from gain and cost using a free ROI calculator. Use this page for a fast estimate, compare a few scenarios, and adjust the inputs until the result matches what you need to decide.

This tool also sits inside the CalcBeacon ecommerce and profit cluster. That makes it easier to find from category pages, related tools, and supporting guides when you want to compare options.

When it is usefulUse this tool when you want a fast estimate, want to compare options, or want a clearer answer before moving on.

Common mistakesCheck that your numbers use the same units, avoid leaving key fields blank, and test a second scenario so you can see how sensitive the final result is.

Next useful stepAfter using this page, compare the result with a related calculator or open the guide to check the number in context.

Related tools

Use these related tools to compare nearby calculations and move to the next step faster.