June 2026 · 5 min read
What Is ROI in Investing? How to Calculate It
ROI explained — the formula, what it means for different asset types, its limitations, and how to calculate it instantly.
Return on Investment (ROI) is one of the most useful and most misused numbers in personal finance. Understanding what it actually measures — and what it doesn't — helps you evaluate investments more clearly.
The ROI Formula
ROI = (Profit ÷ Amount Invested) × 100
Where:
- Profit = Current Value − Amount Invested
- Amount Invested = Total money you paid for the asset (including fees)
Example: You bought 5 Ethereum at $1,600 each, investing $8,000 total. The current price is $3,200.
- Current value = 5 × $3,200 = $16,000
- Profit = $16,000 − $8,000 = $8,000
- ROI = ($8,000 ÷ $8,000) × 100 = 100%
A 100% ROI means you doubled your money.
ROI for Different Asset Types
Crypto: ROI is straightforward — (current price − buy price) / buy price × 100. If you bought at multiple prices, use your blended average cost as the "buy price."
Stocks: Same formula, but remember to include dividends received in your total return. A stock with a 5% annual dividend and 0% price change has a 5% ROI — not 0%.
Gold: Purely price-based, like crypto. Gold pays no dividends or interest, so ROI equals price appreciation only. Use the gold profit calculator to compute it instantly.
Real estate: More complex — include rental income, maintenance costs, property taxes, and mortgage interest to get true ROI.
What ROI Doesn't Tell You
Time horizon matters. A 50% ROI over 10 years is less impressive than a 50% ROI over 6 months. Annualised ROI (CAGR) is more useful for comparing investments held over different periods.
Annualised ROI (CAGR) formula:
CAGR = (Ending Value / Beginning Value)^(1/Years) − 1
Risk is not included. Two investments can have the same ROI with dramatically different risk. A 30% ROI from US Treasury bonds and a 30% ROI from Dogecoin represent very different propositions.
Taxes and fees reduce real ROI. Your pre-tax ROI and your after-tax, after-fee ROI can differ substantially. Always calculate on your net proceeds if you are evaluating completed investments.
Dollar-cost averaging complicates the calculation. If you invested $1,000/month for 12 months, simple ROI doesn't capture the timing of each contribution. Use time-weighted return (TWR) for DCA portfolios.
Quick ROI Calculation Tools
For fast estimates without doing the math:
- Crypto profit calculator — any cryptocurrency
- Bitcoin profit calculator — BTC-specific
- NVIDIA stock profit calculator — NVDA positions
- Gold profit calculator — gold in ounces
- Investment profit calculator — any asset
Each shows your profit, ROI, and break-even price instantly.
From Calculator to Live Tracking
Once your position is live (you've already bought), tracking ROI in real time with live prices is more useful than manually entering prices into a calculator. walletlens.live tracks your ROI automatically for every asset you hold — updating live as prices change. Add your positions once, and your returns are always current, no recalculation needed. Free, no account needed.