Forex positions are measured in lots, and each lot type holds a different number of currency units. This converter keeps the arithmetic straight so your pip values and margin are correct.
Lot sizes at a glance
Why lot size matters
Your lot size decides both the pip value and the margin required. A standard lot of EUR/USD moves $10 per pip; a micro lot moves $0.10. Trading the wrong lot size can blow past your risk budget without you noticing until it's too late.
Worked examples
1 standard lot = 100,000 units = 10 mini lots = 100 micro lots
0.25 standard lots = 25,000 units = 2.5 mini lots
5 mini lots = 50,000 units = 0.50 standard lots
Picking a lot size
Work backwards from your risk budget: decide your money at risk, divide by the pip value per pip for your intended lot size, then convert to lots. Start with micro or mini lots until your edge is proven — a standard lot is a large position for most small accounts.
Broker differences
- Contract sizes can vary — check your broker's spec sheet rather than assuming 100k.
- Fractional lots let you size precisely (0.05, 0.23 lots, etc.).
- Cent accounts and some instruments quote in different unit counts — confirm before relying on the standard conversion.