Portfolio Beta Calculator
Weighted beta of up to four holdings — overall market sensitivity and the expected portfolio move in a market swing.
Formula
Beta only captures systematic (market) risk and assumes a linear, stable relationship — both break in crashes when betas converge toward 1. Use it to size market exposure, not to predict any single day. Beta near 1 with high tracking error means stock-picking risk, not market risk.
Not financial advice — for informational and analytical use only. Verify all figures with a qualified professional before acting on them.
Need portfolio beta calculator results fast? Analysts, founders, traders and finance professionals use the Portfolio Beta Calculator to skip the spreadsheet and get a defensible answer in one step — free, private and instant.
About Portfolio Beta Calculator
Weighted beta of up to four holdings — overall market sensitivity and the expected portfolio move in a market swing. Beta only captures systematic (market) risk and assumes a linear, stable relationship — both break in crashes when betas converge toward 1. Use it to size market exposure, not to predict any single day. Beta near 1 with high tracking error means stock-picking risk, not market risk. The governing relationship is β_p = Σ wᵢβᵢ; expected move = β_p × market move. The Portfolio Beta Calculator computes entirely in your browser — free, private (your figures never leave your device) and instant, recalculating live as you change any input.
How to use Portfolio Beta Calculator
- 1Enter Holding 1 value (currency), Holding 1 beta, Holding 2 value (currency), Holding 2 beta, Holding 3 value (currency), Holding 3 beta into the Portfolio Beta Calculator.
- 2The result is computed automatically using β_p = Σ wᵢβᵢ; expected move = β_p × market move — there is no button to press.
- 3Change any input to model a different scenario, then copy or share the result.
Why use Portfolio Beta Calculator?
- ✓Computes portfolio beta calculator instantly with the correct formula — no spreadsheet needed
- ✓100% free and unlimited, with no sign-up, login or paywall
- ✓Runs entirely in your browser, so the figures you enter stay private
- ✓Shows the formula, a live worked example and references so you can defend the number
Frequently asked questions
What is the formula behind the Portfolio Beta Calculator?+
Portfolio Beta Calculator uses β_p = Σ wᵢβᵢ; expected move = β_p × market move. Beta only captures systematic (market) risk and assumes a linear, stable relationship — both break in crashes when betas converge toward 1. The tool substitutes your actual inputs into this relationship and shows the worked example step by step.
What inputs does the Portfolio Beta Calculator need?+
Enter Holding 1 value (currency), Holding 1 beta, Holding 2 value (currency), Holding 2 beta, Holding 3 value (currency), Holding 3 beta and the result updates immediately — there is no button to press. Change any value to model a different scenario in real time.
Is the Portfolio Beta Calculator free, and is my data private?+
Yes — it is completely free with no sign-up or usage limit, and it runs entirely in your browser, so the numbers you enter are never uploaded or stored on any server. It is for informational and analytical use, not financial advice.
What should I watch out for when using the Portfolio Beta Calculator?+
Use it to size market exposure, not to predict any single day. Beta near 1 with high tracking error means stock-picking risk, not market risk.
What is the Portfolio Beta Calculator based on?+
The method follows authoritative sources: CAPM — Sharpe, Lintner, Mossin. The formula and references are shown on the page so you can verify and cite the result.
Related Finance tools
Human Life Value (HLV) Calculator
The economic value of your future earnings to your family — the income-replacement basis for sizing a life-insurance cover.
● LiveTerm Life Insurance Coverage Calculator
How much term-life cover you actually need — replacing income, clearing debts and funding goals, net of existing assets and cover.
● LiveDIME Method Life Insurance Calculator
The DIME formula — Debt + Income + Mortgage + Education — a fast, complete way to size a life-insurance cover.
● Live