A correlation calculator measures how closely two instruments move together - from +1 (perfectly aligned) to -1 (perfectly opposite). For traders holding multiple open positions, knowing the correlation between instruments is essential to avoid accidentally doubling exposure in the same direction, which multiplies risk beyond what individual position sizing suggests.
This calculator is for educational purposes only. Results are estimates. Not financial advice.
Enter your values above and click Calculate. Adjust any input to instantly see updated results. All calculations run client-side in your browser - no data is sent to any server.
This tool is built for South African traders using ZAR-denominated accounts or trading international instruments through FSCA-regulated brokers. Values are rounded for readability; full precision is used internally.
It means 80% of the price movements in one pair are explained by movements in the other. Trading both long is similar to doubling your position size on a single instrument.
USD/ZAR and EUR/USD have a moderate negative correlation - when the USD strengthens (EUR/USD falls), USD/ZAR typically rises. The correlation varies with SA-specific risk events.
Above 0.7 positive correlation, holding both long positions effectively doubles your directional exposure. Most professional traders avoid adding correlated positions beyond a 0.5 threshold.
Export daily closing prices from TradingView or MetaTrader, then calculate the daily percentage changes. Enter these as your return series.
Yes. Correlations are not fixed. They tend to increase during risk-off events (global crises) when all risk assets move together. Calculate rolling correlations rather than assuming static relationships.
A strong negative correlation (-0.7 or below) means one position partially hedges the other. This can reduce overall portfolio volatility but also limits upside.
Yes. Enter daily percentage returns for any two instruments - the calculation method is identical regardless of instrument type.
Correlation values closer to +1 or -1 indicate a strong relationship, generally above 0.7 or below -0.7 is considered meaningfully strong, while values near zero suggest little to no consistent relationship between the two instruments.
No, correlation between any two instruments can shift meaningfully depending on market conditions and time period, a pair that's strongly correlated over one stretch can decouple significantly during another, worth checking correlation periodically rather than assuming it's fixed.
Negatively correlated instruments tend to move in opposite directions, holding some can genuinely help offset risk in your overall portfolio, unlike positively correlated positions which tend to amplify your combined exposure in the same direction.
Yes, correlation reflects how prices actually move together historically, not simply whether pairs share a currency, some pairs without any common currency can still show meaningful correlation due to broader market or economic linkages.
More data generally produces a more statistically reliable correlation figure, very short lookback periods can produce misleadingly high or low readings driven by a handful of unusual price moves rather than a genuine underlying relationship.