Calculators
Free ROI Calculator – Free & Unlimited
ROI Calculator — see the real return on any marketing spend, free and unlimited.
Enter what you spent and what it returned, and see your Return on Investment (ROI) as a percentage instantly.
Enter what you spent and what it returned, and see your Return on Investment (ROI) as a percentage instantly. Unlike ROAS, ROI subtracts cost from the gain first, so it reflects actual profit — and works for any investment, not only ad campaigns.
Use the ROI Calculator online at no cost.Common tasks this tool helps with
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Try ROI Calculator free
The ROI formula
ROI = ((Revenue − Cost) ÷ Cost) × 100
Revenue is total return, Cost is total amount spent. The result is a percentage — above 0% means the investment paid for itself.
Example
You spent $5,000 on a campaign and it generated $18,000 in revenue.
(($18,000 − $5,000) ÷ $5,000) × 100 = 260% ROI
Why it's free
This is pure math — ROI, ROAS, CAC, LTV and the rest are formulas, not AI generations. There was never a real cost to charge for here, so it runs instantly in your browser with zero credits. With the ROI Calculator, you get this without paying per generation or hitting a credit wall.
What you get
- ROI as a percentage: (revenue gained − amount spent) ÷ amount spent × 100, updated as you type
Who uses the ROI Calculator
- Founders checking whether a campaign paid back its spend
- Marketers comparing channels on a like-for-like return
- Agencies showing a client what a budget returned
How it works
- Enter your Revenue gained ($) and Amount spent ($)
- See your % ROI instantly, no submit button needed
- Use the number in your reporting or planning
Frequently asked questions
Is the ROI Calculator free?
Yes. Every one of GrowthGadgetAi's 100+ Marketing Toolkit tools, including the ROI Calculator, is completely free with unlimited use — no credits, no plan requirement and no credit card.
Do I need to create an account to use it?
You need a free GrowthGadgetAi account so your output and history are saved, but signing up costs nothing and never requires a card.
How is the ROI Calculator's result calculated?
It's a direct formula, not an AI guess — the ROI Calculator computes your % ROI from the numbers you enter, instantly and the same way every time.
What's the difference between ROI and ROAS?
ROAS (Revenue ÷ Ad Spend) ignores your costs beyond media spend; ROI (((Revenue − Cost) ÷ Cost) × 100) subtracts cost first, so it reflects actual profit. Use ROAS to compare ad efficiency and ROI to judge whether a campaign was genuinely profitable.
How do I use the ROI Calculator?
1) Enter your Revenue gained ($) and Amount spent ($). 2) See your % ROI instantly, no submit button needed. 3) Use the number in your reporting or planning. The whole process takes about a minute and runs on this page, on desktop or mobile.
What is the formula behind the ROI Calculator?
ROI = ((Revenue − Cost) ÷ Cost) × 100. Revenue is total return, Cost is total amount spent. The result is a percentage — above 0% means the investment paid for itself.
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