Meme coin profit calculator for Solana, Base and more
The number on the chart is not the number you get. This works out what a trade pays after fomo's fee on both sides and the price impact of moving in and out of a small pool. Type shorthand like 250k or 2.5m. Every change updates the link, so you can share the result.
Disclosure: this page contains a referral link. If you sign up through it, this site may earn a share of the fees you pay on fomo. It does not change what we write or what you pay.
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- Total slippage (buy and sell)
- Buy price impact
- Sell price impact
- fomo fees paid, both sides
- Share of supply you hold
- Position value at exit mcap
- Cash you actually get back
- Breakeven exit mcap
How to use the calculator
- Enter the market cap you bought at, or expect to buy at. Shorthand works: 250k, 2.5m.
- Enter the market cap you plan to sell at.
- Enter your position size in dollars, then the pool liquidity from DexScreener or GeckoTerminal.
- Check the fomo fee, 0.45% by default, then read the result: slippage on both sides, fees paid, what you actually get back, and the market cap you need just to break even.
How the estimate works
The calculator models the pool as a constant-product market maker, which is what Raydium, PumpSwap and most Base DEX pools are. Your buy pushes the price up before you are filled, and your sell pushes it down before you are out. Both moves are larger when your position is big relative to the pool's liquidity.
It assumes the pool's liquidity grows with the square root of the price move, which is what happens to a constant-product pool when nobody adds or removes liquidity. Real pools drift from that as LPs come and go, so treat the exit side as an estimate.
fomo's spot fee is about 0.45% per trade at the time of writing and is charged on the way in and on the way out. Network fees, priority fees and any MEV are not included. Check the fee inside the app before you rely on the default.
What the numbers mean
"Breakeven exit mcap" is the market cap the token has to reach for you to get your money back after fees and impact. On a thin pool it can be well above your entry. "Share of supply you hold" is a useful sanity check: if it is more than a percent or two, you are the liquidity, and the exit will hurt.
This is a model, not a promise. Memecoin trading is high-risk speculation and most people who do it lose money. Not financial advice.
Questions about this calculator
What does this calculator work out?
What a memecoin trade really returns after the fomo fee on the way in and the way out, plus the price impact of entering and leaving a pool of the size you give it. It also shows the exit market cap you need just to break even.
What numbers do I need?
Four: the market cap you buy at, the market cap you expect to sell at, your position size in dollars, and the pool liquidity. Liquidity is on the pair page at DexScreener or GeckoTerminal. The fee is prefilled at 0.45% and you can change it.
Why is my break-even market cap higher than my entry?
Because fees and price impact are charged twice, once when you buy and once when you sell. On a thin pool, a position worth a few percent of the liquidity can need a noticeably higher exit market cap before you are level.
Is the slippage estimate accurate?
It is a model, not a quote. It treats the pool as a constant product market maker, which is what Raydium, PumpSwap and most Base pools are, and assumes liquidity grows with the square root of the price move. Real pools drift from that as liquidity providers come and go.
Put this calculator on your own site
It is free to embed, there is nothing to sign up for, and the embed carries a credit link back here. Paste this where you want it to appear:
The embedded version is the same calculator with the site navigation stripped out. It is marked noindex, so it will not compete with your own pages in search. If you would rather link than embed, a link to a worked example is just as welcome: every set of numbers has its own address, so you can point at one specific scenario rather than a blank form.