Impermanent Loss Calculator (100% Accurate Result)
Find out exactly what supplying liquidity to a pool costs you compared with just holding both assets — in percentage and in real dollars, fees included.
| Asset | Deposited | Now holds | Value now |
|---|
Impermanent loss at a glance
How much one asset can move against a stablecoin before impermanent loss starts to bite — no calculator needed for these common scenarios.
| Price change | Impermanent loss |
|---|---|
| -50% | -5.72% |
| -25% | -1.03% |
| +25% | -0.62% |
| +50% | -2.02% |
| +100% (2×) | -5.72% |
| +150% (2.5×) | -9.65% |
| +200% (3×) | -13.40% |
| +300% (4×) | -20.00% |
| +400% (5×) | -25.46% |
| +900% (10×) | -42.50% |
What impermanent loss actually is
When you deposit two assets into a constant-product pool (the model used by Uniswap V2 and most standard AMMs), the pool automatically rebalances your holdings as the price ratio between the two assets shifts. It sells the asset that’s rising and buys the one that’s falling, relative to the outside market.
That rebalancing is exactly what causes the loss: if you’d simply held both assets in your wallet instead of pooling them, you’d have kept more of whichever one went up. The difference between what you’d have from holding and what your pool position is actually worth is the impermanent loss.
Why it’s called “impermanent”
The loss only becomes real — permanent — the moment you withdraw. If prices move back to the ratio they were at when you deposited, the loss disappears completely, because the pool has rebalanced right back to your original split. It’s a paper loss until you exit at a different ratio than you entered.
How it’s calculated
This calculator uses that exact formula for the headline percentage, and separately re-derives your actual token balances inside the pool (shown in the breakdown table above) to arrive at the same dollar figures — so the percentage and the dollar amounts always agree.
How to reduce your exposure
- Pair correlated assets. Two assets that tend to move together (e.g. ETH/stETH, or two stablecoins) barely change price ratio, so impermanent loss stays close to zero.
- Use concentrated liquidity ranges carefully. Uniswap V3-style ranges amplify both your fee income and your impermanent loss — a narrow range earns more fees while prices stay inside it, but loses more if price exits the range. This calculator models the simpler, unbounded V2-style pool.
- Check the fee APR before you enter. A pool only makes sense if its trading-fee income is likely to outpace the impermanent loss you’d expect from that pair’s typical volatility.
- Watch pairs during high-volatility events. Impermanent loss compounds fast in the first big price swing after you deposit — that’s usually when most of the damage happens, not gradually over time.
Frequently asked questions
Is impermanent loss a real loss?
Yes, once you withdraw. Before that, it’s a paper loss relative to holding — it can shrink back to zero if the price ratio returns to where it was when you deposited. But most liquidity providers do withdraw before that happens, which is when the loss locks in.
Does impermanent loss include gas fees or withdrawal costs?
No. This calculator isolates impermanent loss itself — the value difference caused by the pool’s automatic rebalancing. Network gas fees for depositing and withdrawing are separate costs on top of this.
Can trading fees offset impermanent loss?
Often, yes — that’s the entire economic case for providing liquidity. Enter your fees earned as a percentage of your deposit above, and the “Net vs. HODL” figure shows whether your fee income has covered the loss yet.
Does impermanent loss apply to stablecoin-stablecoin pools?
Barely. Since both assets are designed to stay near $1, the price ratio r stays close to 1, and the formula puts impermanent loss near zero in normal conditions. It rises sharply only if one stablecoin de-pegs.
What’s the maximum possible impermanent loss?
In theory it approaches -100% as the price ratio moves toward zero or infinity, but it grows slower than most people expect: even a 5× move against you is only around -25.5%, because the pool rebalances gradually along the constant-product curve rather than all at once.
Educational tool only — not financial advice. Figures assume a standard 50/50 constant-product pool (Uniswap V2-style) with fees entered manually; concentrated-liquidity pools (Uniswap V3-style) and other AMM curves calculate impermanent loss differently and can produce different results. Always verify important decisions against your own pool’s actual mechanics.