Free ROI calculator
Calculate return on investment.
Enter the amount invested and the amount returned to get ROI, net gain, and the return multiple. Specialized marketing and ecommerce models are available when a simple percentage is not enough.
Simple ROI
Cost, return, net gain, and return multiple
The general-purpose calculator for a project, purchase, or campaign when you already have a cost and a return.
Specialized models
Marketing, ecommerce, and payback
ROAS, CAC, MER, and investment payback stay in the library when the decision is not a simple percentage.
Start here
The simple ROI calculator, then tighter models
Each tool uses a distinct economic model and keeps the core calculation anonymous.
- ROI CalculatorEnter cost and return to get ROI, net gain, and the return multiple for any project or purchase.Open calculator
- Break-Even ROAS CalculatorFind the ROAS and CPA your unit economics can actually support.Open calculator
- Ecommerce Profit CalculatorSee what remains after product, fulfillment, fees, returns, and advertising.Open calculator
- CAC & LTV CalculatorConnect fully loaded acquisition cost with gross-profit lifetime value.Open calculator
- MER CalculatorTurn blended revenue and marketing spend into a margin-aware operating target.Open calculator
- Marketing ROI CalculatorTurn attributed revenue and margin into a defensible marketing profitability estimate.Open calculator
Complete library
Marketing profitability and business ROI tools
Choose the model closest to the decision. Paid media, ecommerce, and acquisition appear first; software and automation remain a focused secondary track.
Paid ads
- Break-Even ROAS CalculatorFind the ROAS and CPA your unit economics can actually support.
- ROAS CalculatorGo beyond revenue ROAS with margin-aware profit and break-even calculations.
- Google Ads ROI CalculatorConnect clicks and conversion rate with CPA, ROAS, margin, and campaign ROI.
- Facebook Ads ROI CalculatorEvaluate Meta campaign efficiency from impression through purchase and profit.
Marketing
- MER CalculatorTurn blended revenue and marketing spend into a margin-aware operating target.
- Marketing ROI CalculatorTurn attributed revenue and margin into a defensible marketing profitability estimate.
- Affiliate ROI CalculatorCalculate commission, contribution profit, ROI, and fully loaded acquisition cost.
Business investment
- Annualized ROI CalculatorCompare returns of different holding periods on one comparable annual basis.
- CRM ROI CalculatorCombine revenue lift, productivity, and retention benefits into a CRM business case.
- AI ROI CalculatorTurn time savings and adoption assumptions into a testable AI investment case.
- Software ROI CalculatorBuild a defensible business case for a software purchase or renewal.
- Automation ROI CalculatorValue a workflow automation using volume, time, adoption, and error reduction.
- Project Payback CalculatorCompare project cost with annual cash benefit, payback, and discounted value.
- Build vs Buy CalculatorCompare implementation, recurring cost, and delay before choosing build or buy.
How to use the estimates
A number is useful only when its assumptions survive review.
01
Define the baseline
Estimate what would happen without the investment so existing demand is not counted as new value.
02
Use full cost
Include implementation, internal labor, margin, fees, and recurring operations where relevant.
03
Test scenarios
Run conservative, base, and upside cases instead of presenting one precise-looking forecast.