FR40 Lot Size Calculator

FR40 is an index — this calculator uses its own real contract size and point value rather than a one-size-fits-all forex formula, since point value and typical price steps vary a lot between instrument types.

How do I calculate lot size for FR40?

Say a trader has a $10,000 account and decides to risk 1% of it on a FR40 long (buy) at 7,984.65, with a stop 48 points away at 7,936.65.

Rounded to a size a broker will actually accept, that's 1.84 lots — a $100.24 loss if the stop is hit.

Using the same 48-point stop, here's how that scales at two common risk levels on a $10,000 account:

• Conservative (1% risk): $100.00 at risk, 1.84 lots
• Balanced (2% risk): $200.00 at risk, 3.67 lots

These are illustrative figures at a fixed example balance and stop — the calculator above uses live prices and your own real inputs. The percentage-risk model itself follows the position-sizing approach popularized by Van Tharp in Trade Your Way to Financial Freedom, among the most widely cited references for treating position sizing as its own risk-management discipline.

What is a standard, mini, and micro lot on FR40?

At FR40's stored contract size (1 units per lot), a "mini" position (0.1 lots) and "micro" position (0.01 lots) scale the point value down by the same factor — $0.11 and $0.01 per point respectively. Useful for sizing a position precisely rather than rounding to a full lot.

When should I adjust my lot size for FR40?

Consider sizing down around high-impact news events or major session overlaps, when volatility and slippage risk increase — a stop that normally holds can be jumped past entirely in a fast move. That risk is higher for an index like this one, which can gap on economic data releases than for a typically calmer major forex pair.

Conclusion

This math only holds if 1 units per lot and $1.14 per point are actually your own broker's real numbers for FR40 — every broker can quote contract specifications slightly differently. Always confirm your own platform's FR40 specification (right-click the symbol in Market Watch, then Specification) before trusting a suggested lot size for a real trade. See how lot size is calculated step-by-step for the general method, Wikipedia's entry on contracts for difference for how brokers structure these contracts, and real MT4 order-ticket screenshots at different leverage settings for further reading.

Contract specification

Frequently asked questions