Barbell vs Bullet Duration Calculator
Build a barbell from two maturities to match a bullet's duration — and see the convexity pickup you gain.
Formula
At equal duration a barbell always has more convexity than the bullet — it outperforms in big rate moves either way, and underperforms in calm or curve-steepening regimes (it earns less carry). The pickup number is what you're trading carry for.
Not financial advice — for informational and analytical use only. Verify all figures with a qualified professional before acting on them.
Need barbell vs bullet duration calculator results fast? Analysts, founders, traders and finance professionals use the Barbell vs Bullet Duration Calculator to skip the spreadsheet and get a defensible answer in one step — free, private and instant.
About Barbell vs Bullet Duration Calculator
Build a barbell from two maturities to match a bullet's duration — and see the convexity pickup you gain. At equal duration a barbell always has more convexity than the bullet — it outperforms in big rate moves either way, and underperforms in calm or curve-steepening regimes (it earns less carry). The pickup number is what you're trading carry for. The governing relationship is w·D_s + (1−w)·D_l = D_bullet; C_bar = w·C_s + (1−w)·C_l. The Barbell vs Bullet Duration 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 Barbell vs Bullet Duration Calculator
- 1Enter Bullet duration to match (years), Bullet convexity (yr²), Short leg duration (years), Short leg convexity (yr²), Long leg duration (years), Long leg convexity (yr²) into the Barbell vs Bullet Duration Calculator.
- 2The result is computed automatically using w·D_s + (1−w)·D_l = D_bullet; C_bar = w·C_s + (1−w)·C_l — there is no button to press.
- 3Change any input to model a different scenario, then copy or share the result.
Why use Barbell vs Bullet Duration Calculator?
- ✓Computes barbell vs bullet duration 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 Barbell vs Bullet Duration Calculator?+
Barbell vs Bullet Duration Calculator uses w·D_s + (1−w)·D_l = D_bullet; C_bar = w·C_s + (1−w)·C_l. At equal duration a barbell always has more convexity than the bullet — it outperforms in big rate moves either way, and underperforms in calm or curve-steepening regimes (it earns less carry). The tool substitutes your actual inputs into this relationship and shows the worked example step by step.
What inputs does the Barbell vs Bullet Duration Calculator need?+
Enter Bullet duration to match (years), Bullet convexity (yr²), Short leg duration (years), Short leg convexity (yr²), Long leg duration (years), Long leg convexity (yr²) and the result updates immediately — there is no button to press. Change any value to model a different scenario in real time.
Is the Barbell vs Bullet Duration 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 Barbell vs Bullet Duration Calculator?+
The pickup number is what you're trading carry for.
What is the Barbell vs Bullet Duration Calculator based on?+
The method follows authoritative sources: Fabozzi — bullet vs barbell strategies. The formula and references are shown on the page so you can verify and cite the result.
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