Stablecoin depeg calculator

Model stablecoin holdings at different USD prices. See losses or gains against current value and a $1 peg, including a complete-loss scenario.

Inputs

Hypothetical example. Replace these inputs with your own.

USD peg model: $1 per token. Scenario prices remain your inputs.

Holding 1Holding label (optional)Quantity · tokensCurrent price · USD/tokenScenario price · USD/token

Find usd-pegged assetUSD-pegged asset (optional identity)

Select an identity to inspect stored references. Example numbers remain hypothetical until you explicitly apply values. Stored references are disabled on this site. Enter prices and supply manually.

Holding 2Holding label (optional)Quantity · tokensCurrent price · USD/tokenScenario price · USD/token

Find usd-pegged assetUSD-pegged asset (optional identity)

Select an identity to inspect stored references. Example numbers remain hypothetical until you explicitly apply values. Stored references are disabled on this site. Enter prices and supply manually.

Result

Calculation result

Example result

Scenario value: 1,450 USD
Change from current value: -50 USD
Change from current value: -3.3333 %
Current value: 1,500 USD
Value at the $1 peg: 1,500 USD
Difference from the $1 peg: -50 USD
Quantity-weighted scenario price: 0.96666667 USD/token
Scenario deviation from the $1 peg: -3.3333 %

This model uses a fixed $1 USD peg for every holding. Current and scenario prices are entered by the user.
Change from current value and difference from the peg are separate comparisons. Neither is tax profit or loss, or historical acquisition cost. The scenario does not forecast a depeg, issuer solvency or redemption.

Calculation breakdown
Holding number	Holding	Value at the peg · USD	Current value · USD	Scenario value · USD	Change from current value · USD	Difference from peg · USD	Scenario price deviation · %
1	Stablecoin A	1,000	1,000	950	-50	-50	-5
2	Stablecoin B	500	500	500	0	0	0

Saved scenarios

Save up to 20 new-tool scenarios on this device, separately from the six existing tools. Prices and balances stay out of the URL. DCA, journal and correlation scenarios save settings and a digest, requiring the matching CSV again to calculate.

Scenario nameSaved scenario

Saving requires browser storage and Web Locks.

Formula and worked example

USD peg model: 1 token = $1 at peg. Each holding value is quantity × entered price. Change from current value differs from the scenario’s difference against the peg. When current total is zero, percentage change is not defined.

Hypothetical example: 1,000 tokens at $0.95 and 500 tokens at $1 are worth $1,450 against $1,500 at current prices of $1. That is a $50 loss, or 3.3333%. A scenario price of zero models complete loss. This is a scenario, not a forecast, issuer solvency assessment or redemption promise.

These estimates use bounded decimal arithmetic. They are scenario calculations, not trading instructions or forecasts.

Methodology sources: Stablecoin pegs and redemption