FreeByte

Impermanent loss calculator

Standard constant-product loss against fee income over your holding period.

Built and reviewed by Dovanic, Founder and editor, FreeByteLast reviewed: 2026-08-18
$
80%
12.0%
6 mo

Impermanent loss

4.17%

Fees earned

$600

Loss in dollars
$417
Net position vs holding
$183
Fee APR needed to break even
8.3%
Verdict
Pooling wins

Assumes a constant-product pool with a stable second asset.

Standard constant-product loss against fee income over your holding period.

A worked example

Starting figures

Price change of one asset
80%
Fee APR
18%
Days in the pool
180

What it returns

Impermanent loss
-4.17%
Fees earned
8.88%
Net effect
4.71%

How to read the results

Loss is 2·sqrt(r)/(1+r)−1 for a price ratio r, compared against fee APR over the period.

With the defaults above, impermanent loss works out at -4.17%.

Methodology

Loss is 2·sqrt(r)/(1+r)−1 for a price ratio r, compared against fee APR over the period.

  • · Assumes a two-asset constant-product pool.
  • · One asset is treated as stable.

Estimates only. Nothing here is financial advice. Spotted something wrong? Tell us and it gets fixed.

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