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.
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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 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.