Modified duration approximates how much the clean price moves when yields shift. Pair with the Bond YTM Calculator when you start from a market price.
Bond Duration Calculator
100% FreeEstimate Macaulay and modified duration for a fixed-coupon bond — interest-rate sensitivity in years.
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Coupon frequency
Educational duration — ignores convexity, options, and day-count quirks.
Duration
Modified duration (years)
3.86
Macaulay duration (years)4.05
Model clean price₹1,000.00
Approx Δprice if YTM +1%-3.86%
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How to Use
- 1 Enter face, coupon, years to maturity, and YTM
- 2 Pick coupon frequency
- 3 Read Macaulay and modified duration
- 4 Use the −modified ≈ % price move for +1% yield as a rule of thumb
Features
- Macaulay duration
- Modified duration
- Approx price change for +100 bp
- Client-side
Why it Matters
When yields rise, bond prices fall — duration translates that into a simple sensitivity estimate.
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Frequently Asked Questions
Is this financial advice?
No — educational estimate only. Options, convexity, and credit spreads are ignored.
Zero-coupon?
Macaulay duration equals maturity for a single payment at face.
Units?
Duration is in years; modified duration scales approximate % price change.
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