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.
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.
More OP calculators
Free Optimism (OP) dollar-cost-averaging calculator. Model recurring OP buys to see coins accumulated, average entry and portfolio value at today's live price.
Work out your weighted average Optimism (OP) entry price across multiple buys — and see exactly where your break-even sits.
Find the exact Optimism (OP) price that liquidates your leveraged position. Prefilled with the live OP price — set your leverage and direction.
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.
📖 Learn more
What dollar-cost averaging is, why it works in volatile crypto markets, its pros and cons, and how to model your own DCA plan.
A beginner-friendly overview of how crypto is taxed — capital gains, taxable events, short vs long term, and how to estimate what you owe.
The IRS treats crypto as property, which makes almost every trade a taxable event. Here are the current rates, the forms you file, and the two rule changes that caught people out this year.
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.