What “pip value” means for AUD USD
A pip value is the monetary value (in your account currency) of a one-pip change in the exchange rate for AUD USD.
To calculate it, you need to separate two ideas:
- The pip-size mechanic: what fraction of the AUD USD rate counts as “one pip” for the market convention you are using.
- The money translation: how that one-pip move turns into a cash amount, which depends on lot size/contract size and any conversion needed to express the result in your account currency.
Because different platforms may use slightly different pip conventions (especially for quotes with fractional digits), you must state your assumed pip size and contract/lot size before applying any formula.
Core calculation (assume you know pip size and lot size)
Let:
- P = pip size as a price increment for AUD USD (for example, 0.0001 under a common 4-decimal convention)
- L = position size in lots
- C = contract size per lot in base-currency units (commonly 100,000 units, but treat this as an input)
- r = current AUD USD exchange rate expressed as USD per 1 AUD
For a long position in AUD USD, a one-pip move changes the AUD quantity’s notional value in the quote currency (USD) by approximately:
Value in USD per pip = C × P
Notes:
- This uses the fact that the quote-currency value change from a small price increment equals (base units) × (price increment).
- The direction (long vs short) changes the sign, not the magnitude.
Converting pip value into your account currency
Your account currency may be the quote currency (USD), the base currency (AUD), or a third currency (for example, EUR or GBP). The conversion step is what makes “pip value for AUD USD” vary across accounts.
Case A: Account currency is USD
If your account is in USD, then:
Pip value (USD) = C × P
No additional FX conversion is needed.
Case B: Account currency is AUD
If your account is in AUD, you convert USD → AUD using the AUD USD rate r = USD per 1 AUD.
Since 1 AUD = 1/r USD, then:
Pip value (AUD) = (C × P) / r
Case C: Account currency is a third currency (X)
If your account currency is X, you typically convert via one or two FX rates, depending on what market quotes you have available.
A generic approach is:
- Compute pip value in USD: V_USD = C × P
- Convert USD to X using the appropriate FX rate(s).
If you have a direct quote USD/X meaning X per 1 USD, call it q. Then:
Pip value (X) = (C × P) × q
If you only have the inverse (X per USD vs USD per X), you invert the rate accordingly. If neither direction is available directly, you use a cross conversion path (for example, USD → AUD → X). Whatever path you use, it must match how the rates are quoted.
Worked example (with explicit assumptions)
Assume all of the following inputs:
- Pip size for AUD USD: P = 0.0001
- Contract size per lot: C = 100,000 AUD per lot
- Lot size: L = 1.0 lot
- Account currency: either USD or AUD
- Current AUD USD rate: r = 0.6500 USD per 1 AUD (this is only to illustrate the conversion step)
First compute contract base units:
- Base units = C × L = 100,000 AUD
If the account currency is USD
- Pip value (USD) = 100,000 × 0.0001 = 10 USD per pip
If the account currency is AUD
- Pip value (AUD) = 10 USD ÷ 0.6500 (USD per AUD) = 15.3846 AUD per pip
These magnitudes depend only on the chosen pip size, contract size, and the conversion rate used for the account currency.
Material limitations and failure modes
Even with correct formulas, pip value can be wrong if key assumptions don’t match the platform’s conventions. Common limitations:
- Pip definition mismatch: Some systems may define pip differently (for example, using 0. 01 vs 0. 0001 increments, or fractional pip quoting). If your P is wrong, the pip value will be wrong. 2. Contract-size or lot-size mismatch: The contract size per lot (C) may differ across providers or products. If C is incorrect, results scale linearly and will be off by the same factor.