Essential calculators for every trader. Know your numbers before you enter the market.
Rule of thumb: Most professional traders risk 1–2% per trade. Never risk more than 5% on a single position regardless of confidence level.
Position sizing is the single most important risk management skill a trader can develop. It determines exactly how many lots to trade so that a losing trade only costs you a fixed percentage of your account — regardless of which instrument you're trading or how wide your stop loss is.
The formula is simple: Risk Amount ÷ (Stop Loss in pips × Pip Value) = Lot Size. For example, on a $10,000 account risking 1% ($100) with a 20-pip stop on EUR/USD (pip value = $10/lot), you'd trade 0.50 lots.
The breakdown shows your ideal size across standard (100,000 units), mini (10,000 units), and micro (1,000 units) lot sizes — useful for prop firm accounts where you may need to round to the nearest micro lot.
Note: pip values shown use standard approximations. For live market conditions, exact pip values vary slightly with price movements, especially on JPY pairs and metals.
Example: EUR/USD at 1 standard lot = $10/pip. At 0.10 lots = $1/pip. At 0.01 lots = $0.10/pip. JPY pairs have lower pip values because 1 pip = 0.01 (not 0.0001).
A pip (percentage in point) is the smallest standardised price move in a currency pair. For most pairs it's the 4th decimal place — so EUR/USD moving from 1.0850 to 1.0851 is 1 pip.
The exception is JPY pairs — because yen is a lower-value currency, 1 pip is the 2nd decimal place. USD/JPY moving from 149.50 to 149.51 is 1 pip.
For metals, the pip size differs: Gold (XAU/USD) uses $0.01 as 1 pip, and 1 standard lot = 100 oz — so pip value varies significantly with price. Silver uses $0.001 per pip at 5,000 oz per lot.
Pip value matters because it tells you exactly how much money you make or lose per pip of movement at a given lot size — which is what position sizing is based on.
Minimum recommended R:R is 1:2. At 1:2 you only need to win 34% of trades to be profitable. Most beginners fail by taking 1:1 setups with a sub-50% win rate.
Risk/reward ratio compares how much you stand to lose (distance from entry to stop loss) versus how much you stand to gain (distance from entry to take profit). A 1:2 ratio means you risk 1 unit to make 2.
The required win rate to break even at a given R:R is: 1 ÷ (1 + R:R ratio). At 1:2 that's 33.3% — meaning even if you lose 2 out of 3 trades, you still break even. At 1:3 it drops to 25%.
This is why professional traders obsess over R:R before entering — a consistently good R:R means you can be wrong more than half the time and still be profitable.
Keep free margin above 200% to avoid margin calls. Higher leverage = lower margin requirement but higher risk per pip.
Always calculate P&L before entering. Knowing your exact dollar risk removes emotion from trading decisions.