Bond Duration Calculator

Bond duration measures price sensitivity to interest rate changes. Macaulay duration is the weighted average time to cash flows; modified duration estimates price change per 1% rate move

The calculator uses the standard published formula for bond duration calc. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

This calculator works with inches, percentages. You can enter values in the units shown — the calculator handles all conversions internally.

The core formula is: Macaulay duration = Sum[t x PV(CF_t)] / Bond price. Each step in the calculation is shown so you can verify the result manually.