Direct answer
In forex, a “lot” is a measure of trade size. For standard accounts, one standard lot is typically 100,000 units of the pair’s base currency. Because the base currency value is converted into your account currency and because pip size depends on the instrument, the exact money amount per lot is not the same as the money amount per pip.
How it works: lot size, pip size, and pip value
A forex pair has a base currency and a quote currency (for example, EUR/USD: EUR is the base, USD is the quote). When you trade 1 standard lot, you control a notional position equal to 100,000 units of the base currency (under the common “standard lot” convention).
A pip is the smallest typical price step used to quote changes in many currency pairs. For many major pairs, a pip is often 0.0001 in price terms, but this is not universal across all instruments and quoting formats. The “pip value” is the amount of money you gain or lose for a one-pip move, given your lot size.
To connect lot size to money impact, you need three inputs:
- Contract size (units per lot): how many base units one lot represents.
- Pip size (price step): what one pip equals in price terms for that instrument.
- Currency conversion: how the quote currency value maps to the account currency.
If the quoted pip size or conversion differs, the same “one lot” can produce different pip values.
Example checks (and what to verify)
A useful way to think about “how much is one lot” is to separate two ideas:
- Position size: how many base-currency units you trade (commonly 100,000 for a standard lot).
- Value of a pip: the currency amount change for a one-pip move.
On many platforms, you can verify the pip value directly using the instrument’s contract specifications and your account currency. If you cannot find a pip value display, another independent check is to compute it using the contract size, pip size, and the relevant exchange-rate conversion assumptions stated by your broker or platform.
Relevant limitations and risks
Lot conventions are commonly described, but exact contract specifications can vary by broker, account type, and instrument (for example, standard versus mini lots or instruments with different pip conventions). Also, broker platforms may present pip movement and rounding differently.
Because pip value depends on exchange-rate conversion and quoting details, you should treat any “one-lot pip value” as conditional on the pair, pip definition, and account/contract settings. Finally, this explanation describes mechanics; it does not predict outcomes, and it does not account for your personal trading circumstances.