How to Calculate Duration of a bond using Financial Calculator

The bond duration is an invariant of the discounted perpetuities discussed in the last few chapters. In short, it measures the decay in the value of interest-bearing coupon security that was purchased at a discount.

In this article, I’ll show you how to calculate the duration of a bond using a financial calculator.

Function and Uses of Financial Calculation

A financial calculator is a handy tool for calculating the duration of a bond. The duration of a bond is the amount of time it takes for the adhesive to mature. This is important because it can affect the interest rate you earn on the bond and how much money you will have to pay back when the bond matures.

There are many different ways to calculate the duration of a bond, but using a financial calculator is one of the most accessible and most accurate methods. To use a financial calculator, you will need to input the following information:

-The face value of the bond
-The coupon rate
-The number of years until maturity
-The current market interest rate

Once you have input all of this information, the financial calculator will do the rest of the work for you and give you an answer in terms of years. This answer is the duration of your bond.

Duration is an important concept to understand if you want to invest in bonds. By knowing the duration of your bonds, you can make better decisions about which ones to invest in and how long to hold onto them. Using a financial calculator is one of the best ways to quickly and easily calculate duration.

Logic Behind Deriving Bonds’ Duration

Deriving a bond’s duration is essential to understanding how changes in interest rates will impact the bond’s price. The formula for the duration is:


Where D is the duration, Ct is the cash flows at time t, and r is the yield to maturity.

The numerator, Ct-C, can be considered the present value of the cash flows at time t minus the current value of all cash flows. The denominator, 1+r, can be viewed as the sum of all present values divided by the number of periods.

Thus, we can see that duration measures a bond’s sensitivity to changes in interest rates. An adhesive with a long time will be more sensitive to interest rate changes than a bond with a shorter duration.

To calculate a bond’s duration using a financial calculator, we first need to enter the bond’s price, coupon rate, and face value. We then key in the number of years to maturity and hit the “calculate” button. The calculator will then give us the bond’s duration.

How to Calculate (or Find) the Duration of Bonds?

When trying to calculate the duration of a bond, one of the first places many investors turn is to their financial calculator. Finding the duration of a bond using a financial calculator is quite simple and only requires a few steps. Here’s how to do it:

1) Enter the purchase price of the bond into your calculator. This is the bond’s price you paid (or will pay).

2) Enter the bond’s face value. This is the amount paid to you when the bond matures.

3) Enter the number of years until the bond matures.

4) Hit the “calculate” button.

The duration of a bond is typically expressed in years. It represents the time it will take for your investment to mature and payout. Keep in mind that bonds with longer durations generally are riskier than those with shorter durations, as they are more sensitive to changes in interest rates. But they can also offer higher potential returns.

Leverage Effect

Find the present value of a bond that pays $50 per year for 10 years, has a par value of $1,000, and a coupon rate of 5%?

To calculate the duration of a bond, you need to know the Bond’s Yield to Maturity (YTM).

YTM is the rate of return you would earn if you held the bond until it matures.

To calculate YTM, enter the following into your financial calculator:
N=10 I/Y=5 PV=-1000 FV=1000 CPT 4 => YTM = 5.24%

Now that you have the YTM, you can calculate the bond’s duration using the following formula:
Duration = [(1+YTM/n)^n – 1]/[(1+YTM/n)^n x YTM]
Where n= the number of payments per year
For our example:
Duration = [(1+.0524/2)^2 – 1]/[(1+.0524/2)^2 x .0524] = 9.68 years

This is a relatively short bond with the maturity of 10 years, but the payments are received yearly. While longer-term bonds will typically have lower coupon rates, they will also have longer durations.

If you’re looking to minimize volatility in your portfolio, bond duration is one of many factors that should be taken into consideration.


Now that you know how to calculate the duration of a bond using a financial calculator, you can use this information to make better investment decisions.

This tool can be handy when comparing bonds with different maturities or considering the effects of interest rate changes on your portfolio.

Remember, however, that duration is just one factor to consider when making investment decisions.

Be sure to consult with a financial professional before making significant investment decisions.

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Hi, this is James. I'm a professional Finance Lecturer who finished college at Santa Clara University. I’m here to help you choose the perfect calculator for your financial needs. 

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