Direct answer
Pip value is the money impact of one pip (the platform’s minimum quoted price step) for a given currency pair. For “Pair Spreads,” the key idea is that a spread expressed in pips can be converted into a monetary cost by using pip value in the account currency and the pip size convention. If your account currency differs from the pair’s quote currency, the conversion typically requires an additional exchange-rate step (or the inverse of one).
Mechanism and definitions
A pip is a standardized price increment used to express price changes in foreign exchange. For many major pairs, a pip corresponds to a move of 0.0001 in price terms, but platforms may use different conventions (for example, where the pair has fewer decimals). A pip value answers: “If the price moves by 1 pip, how much profit or loss in account currency does that represent for a given position size?”
A pair spread usually means the bid–ask difference quoted for a currency pair, often expressed either as a price difference or as pips. When a spread is quoted in pips, the monetized cost per unit position size can be derived by:
- Determine the pip size convention for the pair.
- Compute pip value in the pair’s quote currency.
- Convert that pip value into your account currency if needed.
- Multiply by the spread amount in pips.
Core formula (conceptual)
Let:
- P = position size (often in base-currency units; use the platform’s position definition)
- pipPrice = the pair’s pip size expressed as a price increment
- quoteCCY = the quote currency of the pair (the second currency in the pair label, e.g., EUR in EUR/USD)
- acctCCY = your account currency
A common conceptual form is:
- Pip value in quote currency = P × pipPrice Then:
- Pip value in account currency = (Pip value in quote currency) × (conversion rate from quoteCCY to acctCCY)
Finally, if the spread is sPips:
- Monetary spread amount = (Pip value in account currency) × sPips
Currency conversion step
If acctCCY = quoteCCY, no conversion is needed.
If acctCCY ≠ quoteCCY, you typically need a rate that converts quoteCCY into acctCCY. Depending on how you obtain rates, you may use either:
- a direct conversion rate (quoteCCY → acctCCY), or
- its inverse (acctCCY → quoteCCY), then invert it.
Because “pair spread” is always tied to one specific currency pair, the conversion must be consistent with the same quoteCCY used when computing pip value.
Evidence or example (with explicit assumptions)
Assume a simplified setting where:
- pip size corresponds to 0.0001 for the pair
- position size P is measured in base-currency units (the platform’s common convention)
- you want the spread cost for a position of size P
- the spread is quoted as sPips pips
Example A: account currency equals quote currency
Take a pair with quoteCCY = your acctCCY. Then:
- pipPrice = 0.0001
- Pip value (quote/account currency) = P × 0.0001 (in quote currency units)
- Monetary spread amount = (P × 0.0001) × sPips
This works because the pip value is already in your account currency.
Example B: account currency differs from quote currency
If acctCCY differs from quoteCCY, let FX be the conversion rate that expresses how many acctCCY units you get for 1 unit of quoteCCY.
- Pip value in quote currency = P × 0.0001
- Pip value in account currency = (P × 0.0001) × FX
- Monetary spread amount = (P × 0.0001) × FX × sPips
One material limitation (where “Pair Spreads” can break)
The spread-to-money conversion assumes that:
- the spread is measured using the same pip convention your pip value uses, and
- the position size definition (P) matches the one used by your platform’s margin/P&L model.
If your platform uses a different pip size (e.g., fewer decimals) or a different contract multiplier, then using a generic 0.0001 assumption will produce an incorrect pip value. Another failure mode is rounding: small positions can round to zero in displayed pip value, while the true underlying value is non-zero.
Limitations and risks, plus independent verification
Limitations to keep in mind
- Pip convention varies by pair and platform. One platform’s “1 pip” may not be another’s “1 pip” in numeric terms. - **Costs are not only spread.