China ETF correlation calculator
Measure how any China ETFs move together. Get the Pearson correlation of their daily returns and a full correlation heatmap — in seconds.
Pearson on returns
Correlation is computed on daily returns, not raw prices — the statistically correct way to see how funds move together.
Correlation heatmap
Compare up to eight ETFs at once and read the whole matrix at a glance, color-coded from red to green.
Free, no sign-up
No account, no credit card. Pick funds, choose a period, and get the numbers instantly.
How it works
Explore ETF Correlate
📇 ETF directory →
Browse liquid China ETFs by category — broad market, sectors, themes, commodities, bonds and QDII.
📚 Correlation guides →
Learn what Pearson r means, how it drives diversification, and how to read a correlation matrix.
🧮 Calculators →
Dedicated pages for China ETF correlation, the Pearson calculator, CSI 300, and stock vs bond.
Frequently asked questions
Is ETF Correlate really free?
Yes. It's completely free to use — no account, no credit card, and no hidden limits. Just pick ETFs and calculate.
Does it use prices or returns?
Daily returns. Raw price levels trend upward over time and make almost any two funds look correlated; returns reveal the real day-to-day co-movement, so the Pearson correlation here is always computed on returns.
Which ETFs can I compare?
Any China-listed ETF with a 6-digit code. Choose from the curated list or type a custom code such as 510300 or 159915. You can compare up to eight at once.
What do the periods mean?
Each option is a lookback window of trading days — roughly 21 (1 month) up to 756 (3 years). Shorter windows react faster but are noisier; longer ones are steadier. Try a few to see if a relationship is stable.
Is this investment advice?
No. Data is delayed and provided for informational and research purposes only. Correlations describe the past and can change. Read the guide to Pearson correlation for context.
A free China ETF correlation calculator
ETF Correlate is a free online tool for measuring how China-listed ETFs move together. Pick any two funds — a CSI 300 ETF, ChiNext, a sector or thematic ETF, gold, or government bonds — and it fetches recent daily prices and returns the Pearson correlation coefficient of their daily returns, on the standard −1 to +1 scale. Add more funds and it builds a full correlation matrix heatmap so you can see every pairwise relationship at once.
Why correlation matters
Diversification depends on correlation, not on how many funds you own. Holding several broad A-share ETFs that all move together is really one bet in many wrappers — they'll rise and fall as one. A low or negative correlation between holdings is what smooths a portfolio's ride. This tool turns that into a quick check: load what you hold, add a candidate fund, and read whether it brings something genuinely different.
Computed on returns, the right way
The most common correlation mistake is feeding raw prices into the formula, which makes nearly everything look correlated because prices drift upward over time. ETF Correlate converts each fund's prices to daily returns first, then computes Pearson r over the dates the funds have in common. The result reflects real co-movement, and the included scatter plot lets you see the relationship, not just the number.
Free, fast, and no sign-up
There's nothing to install and no account to create. Choose ETFs, set a lookback period, and the calculation runs in seconds on a global edge network. Data is delayed and provided for information only — this is a research tool, not investment advice. For background, see the correlation guides or browse the ETF directory.