Direct answer
Pip value is the monetary value of a one-pip move in a currency pair, expressed in your account’s currency. For “USD concentration,” the key idea is to express the pip move in USD first, then convert that USD amount into the account currency (if the account is not already in USD). The exact computation follows a consistent chain: pip size → quote currency exposure → USD value → account-currency conversion.
Mechanism: what “pip value” means and what must be specified
A “pip” is the standardized minimum price increment for a given pair as used by the market convention of that instrument. In many major FX pairs, pip size is 0.0001; pairs involving JPY often use 0.01 as a typical convention. Because conventions can differ across instruments, you should treat pip size as an input, not a constant.
To calculate pip value, you need four inputs:
- Trade size (typically in units of the base currency, e.g., 100,000 units).
- Pip size for the instrument (e.g., 0.0001 or 0.01, depending on the pair convention).
- Whether you are long or short (the pip value’s sign changes; the magnitude is the same under the same assumptions).
- How to convert the quote-currency pip value into USD and/or into the account currency.
A simple base formula (in the instrument’s quote currency)
If your position is denominated by a pair where the quoted price is expressed as (quote currency per 1 unit of base currency), then:
- A one-pip price move corresponds to a price change of pip_size.
- The value change in the quote currency is:
Pip value (quote currency) = Trade units × Pip size
This works cleanly when the quoted pip change is interpreted consistently as a change in the pair price.
USD concentration: routing the calculation
“USD concentration” can mean that you want the pip value to be meaningful in terms of USD exposure, even if your account currency is different. A practical way to implement that is:
Step 1: compute pip value in quote currency
Use:
Pip value (quote currency) = Trade units × Pip size
Step 2: convert from quote currency to USD
If the quote currency is already USD, then the USD pip value equals the quote-currency pip value:
Pip value (USD) = Pip value (USD-quote currency)
If the quote currency is not USD, you need a conversion rate that expresses how many USD you get for one unit of the quote currency. Conceptually:
Pip value (USD) = Pip value (quote currency) × (USD per 1 quote currency)
How you pick the correct “USD per 1 quote currency” rate depends on the pair orientation you use for conversion. The limitation here is important: swapping numerator and denominator by mistake is a common error.
Step 3: convert USD pip value to the account currency (if needed)
If your account currency is not USD, then:
Pip value (account currency) = Pip value (USD) × (account currency per 1 USD)
Again, the conversion-rate direction matters.
Evidence or example (with explicit assumptions)
Assume:
- Trade units = 100,000 base-currency units.
- Pip size = 0.0001.
- The pair you trade is of the form BASE/QUOTE, where the quote currency is EUR.
- You want pip value in USD first (USD concentration).
- You also want pip value in an account currency, say GBP.
1) Quote-currency pip value:
- Pip value (EUR) = 100,000 × 0.0001 = 10 EUR.
2) Convert EUR → USD:
- Let the conversion rate be USD per 1 EUR = r_EURUSD.
- Pip value (USD) = 10 × r_EURUSD.
3) Convert USD → GBP (account currency):
- Let the conversion rate be GBP per 1 USD = r_USDGBP.
- Pip value (GBP) = (10 × r_EURUSD) × r_USDGBP.
This example shows the routing logic. It also highlights a limitation: the pip value is only as accurate as the conversion-rate assumptions you apply, and those assumptions must be consistent across all steps.
Limitations and failure modes (what can go wrong)
- Wrong pip size: Using 0. 0001 when the instrument’s pip convention differs leads to a systematic error. 2) Point vs pip confusion: Some platforms quote “points” or “ticks” that are not the same size as a pip. Mixing them changes the magnitude.