Optimism Profit Calculator
Free Optimism (OP) profit calculator. Enter your buy and sell price to see OP profit, loss, ROI and fees — prefilled with the live OP price.
Result
Enter values to see the result.
Using the Optimism Profit Calculator
This calculator works out what a OP trade actually made after fees. Enter the price you bought OP at, the price you sold (or would sell) at, and how many coins you hold — the profit, ROI percentage and total fee cost update as you type. The price fields load the live OP market price when the page opens, so you can start from a realistic number instead of a placeholder.
Fees matter more than most people expect on OP. Fees are a few cents and move with Ethereum's data costs; chains built on the OP Stack share the same economics. The fee field applies your percentage to both the entry and the exit, which is how exchanges actually charge you — a 0.1% maker fee each way is 0.2% of the round trip, and that is before spread.
OP competes directly with ARB for the same narrative, and the two tend to move together — often on the same rollup news. That is worth keeping in mind when reading the ROI figure: an unrealised gain on OP is only a gain once you have exited, and the exit price you can actually get depends on order-book depth at the moment you sell.
What OP's recent moves mean for your P/L
- Typical day
- ±2.7%
- Best day (12mo)
- +18.8%
- Worst day (12mo)
- -29.6%
- 52-week range
- $0.0821 – $0.8316
Over the last 366 days, OP moved a median of ±2.7% per day. That is comfortably more than the 0.2% a maker round trip costs, so an average day leaves room for profit. The fee field applies to both your entry and exit, which is why the round trip, not the one-way fee, is the number that decides a short trade.
The window's extremes set the range this calculator has to work with: OP's best day added +18.8% (13 Jan 2026) and its worst dropped -29.6% (10 Oct 2025). An ROI figure only becomes real at the moment you exit — on a coin that can move like that, the fill you actually get depends on order-book depth, not the mid price you type in.
Figures are derived from OP's own daily closes over the window shown and are bounded by it — not all-time values. Prices move; treat them as context, not a forecast.
Optimism at a glance
- Launched
- Chain and OP token 2022
- Type
- Optimistic rollup; OP Stack powers the Superchain
- Max supply
- 4,294,967,296 OP (2³²)
- Gas token
- ETH — not OP
- Governance
- Token House plus a Citizens' House for retroactive funding
- Native staking
- None — OP is used for governance
Frequently asked questions
- How do I calculate Optimism profit?
- Profit equals (sell price − buy price) × the number of OP you hold, minus trading fees on both sides. ROI is that profit divided by what you originally spent. This calculator does both, and applies your fee percentage to the entry and the exit separately.
- Does this OP calculator use the live price?
- Yes. When the page loads it fetches the current OP market price and prefills the price fields, and the "↧ Live price" button refreshes them on demand. Everything is calculated in your browser — nothing you type is sent anywhere.
- Should I include OP withdrawal fees?
- If you moved coins on-chain, yes — add them to your fee percentage or subtract them from the result. Fees are a few cents and move with Ethereum's data costs; chains built on the OP Stack share the same economics.
- How is crypto profit calculated?
- Profit = (sell price − buy price) × amount, minus trading fees on both the buy and sell sides.
- What is ROI?
- Return on investment is your net profit divided by your total cost, expressed as a percentage.
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Calculate Optimism (OP) market cap from the live OP price and circulating supply — plus FDV, and the price OP would need to reach any target valuation.
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Prefer the generic version without OP presets? Open the Crypto Profit Calculator.
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For educational purposes only. Rates, fees and protocol parameters change — verify current figures with your exchange or validator before acting. Not financial advice.