🧰Locly

Calculate ROI Online

Calculate return on investment from cost and return

Enter cost and return, then click Calculate

About This Tool

ROI Calculator computes return on investment as (Return βˆ’ Cost) Γ· Cost Γ— 100. Optionally see net profit (Return βˆ’ Cost). Use it for campaigns, projects, or inventory buys. Everything is processed locally in your browser β€” numbers never leave your device.

How to Use

  1. Enter your total cost or investment
  2. Enter the return or revenue you received
  3. Click Calculate to see ROI % and net profit
  4. Adjust inputs to compare scenarios
  5. Clear to start over

Common Use Cases

  • Marketing: Compare campaign ROI across channels
  • Business: Evaluate project or product investments
  • Ecommerce: Measure inventory or promo returns
  • Freelance: Check whether a gig was profitable
  • Planning: Model break-even style what-if ROI

FAQ

Q1: How is ROI calculated?

ROI% = (Return βˆ’ Cost) Γ· Cost Γ— 100. Net profit is Return βˆ’ Cost.

Q2: ROI vs ROAS β€” what is the difference?

ROAS is revenue Γ· ad spend. ROI uses (return βˆ’ cost) Γ· cost and can include all costs, not only ads.

Q3: Is my data uploaded?

No. All calculations are processed locally in your browser and never uploaded.

Q4: Why do I see a divide-by-zero message?

Cost must be a non-zero number; otherwise ROI is undefined.

Related Tools

ROAS CalculatorProfit Margin CalculatorBreak-Even CalculatorMarkup Calculator