Pricing

Pay per usage

LP Impermanent Loss Calculator

Calculate impermanent loss for Uniswap v2-style AMM pools. Auto-fetch current prices via CoinGecko or provide manual ratios. Compares LP vs HODL P&L, factors in fee income, generates scenario sweep. $0.001/calculation.

Pricing

Pay per usage

Rating

0.0

(0)

Developer

Hojun Lee

Actor stats

Bookmarked

Total users

Monthly active users

5 days ago

Last modified

What It Does

Computes impermanent loss and LP position value based on price change from entry to current, using the constant-product AMM formula.

Auto mode: Fetch live prices from CoinGecko for any two tokens
Manual mode: Enter a custom price ratio directly
Scenario sweep: Generate IL across 14 price change scenarios (-95% to +10x)

Outputs LP value, HODL value, net P&L, and the minimum fee APY needed to break even.

Input

Field	Type	Default	Description
`mode`	string	`scenario_sweep`	`auto` (CoinGecko), `manual` (custom ratio), `scenario_sweep`
`coinAId`	string	`ethereum`	CoinGecko ID for token A (auto mode)
`coinBId`	string	`bitcoin`	CoinGecko ID for token B (auto mode)
`initialPriceRatio`	number	—	B/A price ratio at entry (manual mode)
`currentPriceRatio`	number	—	B/A price ratio now (manual mode)
`initialLiquidityUsd`	number	`10000`	Initial USD deposited into the LP
`holdingPeriodDays`	number	`30`	Days held (for annualized breakeven fee calculation)

Output

Field	Description
`price_ratio`	Current price ratio vs entry
`il_pct`	Impermanent loss percentage
`lp_value_usd`	Current LP position value
`hodl_value_usd`	What HODL would be worth
`net_pnl_vs_hodl`	LP vs HODL dollar difference
`breakeven_fee_apy_pct`	Required fee APY to offset IL

Pricing

$0.001 per calculation (flat per run).

Use Cases

Evaluate whether a pool's fee APY justifies the IL risk
Compare LP entry prices vs current for risk/reward decisions
Stress-test portfolio against extreme price moves

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