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CD Rate Calculator to Calculate Certificate of Deposit Interest and APY

Calculator Preferences
Certificate of Deposit Rate Calculator Sign
Certificate of Deposit Rate Calculator

This calculator will calculate a certificate of deposit interest and annual percentage yield (APY), plus allow you to set the compounding interval to match the interval of the CD you are calculating interest for. The Learn tab includes brief answers to:

  • What is a CD and how does it work?
  • Where can you purchase CDs?
  • Where can I find an unbiased source for in-depth study?
Learn More

Selected Data Record:

A Data Record is a set of calculator entries that are stored in your web browser's Local Storage. If a Data Record is currently selected in the "Data" tab, this line will list the name you gave to that data record. If no data record is selected, or you have no entries stored for this calculator, the line will display "None".

DataData recordData recordSelected data record: None
CD amount:CD amount:Certificate of deposit amount:Certificate of deposit amount:

Certificate of deposit amount:

Enter the amount of the CD (without dollar sign and commas). Most certificates of deposit require a minimum deposit amount of $500 or more.

Int rate:Interest rate:Annual interest rate:Annual interest rate:

Annual interest rate:

Enter the annual interest rate (APR) of the CD. Enter as a percentage without the percent sign (for 2.5%, enter 2.5).

# months:# of months:Number of months:Number of months:

Number of months

Enter the number of months before the CD reaches its maturity date.

Compound:Compounding:Compounding interval:Compounding interval:

Compounding interval:

Select the compounding interval that applies to the certificate of deposit. Typically, the more frequent the compounding, the more interest you will earn in a given amount of time.

FV:Future value:Future value:Future value:

Future value:

Based on your entries, this how much your certificate of deposit will be worth when it reaches its maturity date.

Interest:Interest earned:Interest earned:Interest earned:

Interest earned:

Based on your entries, this is the amount of interest you will earn on the CD.

APY:APY:Annual percentage yield:Annual percentage yield:

Annual percentage yield:

Given the number of months and interest rate, this is the annual percentage yield (APY) of the certificate of deposit.

APY (also know as Effective Annual Rate, or EAR) is a formula used by investors to compare one quoted interest rate with another -- because savings institutions like to quote their interest rates in ways that make them appear higher than they actually are. The APY formula allows investors to compare apples to apples -- regardless of the method used to quote the rates.

If you would like to save the current entries to the secure database, tap or click on the Data tab, select "New Data Record", give the data record a name, then tap or click the Save button. To save changes to previously saved entries, simply tap the Save button. Please select and "Clear" any data records you no longer need.

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Tip

About

About the Certificate of Deposit Rate Calculator

This free online CD rate web app will calculate a certificate of deposit interest and annual percentage yield (APY).

Plus, unlike some online certificate of deposit calculators, this calculator will even allow you to set the compounding interval to match the interval of the CD you are calculating interest for.

The Learn tab also includes a brief description of certificates of deposit along with a link to an unbiased source for more in-depth study.

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Instructions

How to use the Certificate of Deposit Rate Calculator

Step #1:

Enter the dollar amount of the CD.

Step #2:

Enter the interest rate.

Step #3:

Enter the number of months that will pass before the CD reaches maturity.

Step #4:

Select the compounding interval (how often the interest rate is computed and added to the principal).

Step #5:

Click the "Calculate CD Rate" button.

Saving Entries:

If your web browser supports Local Storage, you can save your entries to your web browser so won't have to start over on your next visit. Please note that your saved entries can only be retrieved from the same device and web browser you were using when you stored them. If you would like to access your saved entries from any device I invite you to subscribe to the Ad-Free Member Version.

To save your entries to your web browser, click or tap the Data tab in the Help and Tools section (mobile: top right of the main screen), select "New Data Record" from the drop-down menu, enter a name for the data record, and then tap or click the Save button.

To load previously saved entries, click or tap the Data tab and select the saved data record from the drop-down menu. You can then save any changes to your entries by simply clicking the Save button while the data record is selected.

To clear a named set of saved entries, click or tap the Data tab, select the saved data record from the drop-down menu, and then tap or click the Clear button.

Numbers and Decimals:

Only numeric characters (0-9 and decimal points) may be entered in numeric fields. Non-numeric characters (dollar signs, percent signs, commas, etc.) may cause calculation errors. If the field includes a grid icon, tapping the icon will open a popup keypad which will include only the characters allowed in the field. If your device keypad does not include a decimal point, use this popup keypad to enter decimal numbers where applicable.

Popup Tool Tips:

Tap the info (i) icons for a further explanation of each entry field (you can click [X] or outside of the pop-up tool tips to close them). A summary of these explanations, along with any additional term explanations, can also be found under the Terms tab.

Disclaimer:

Since I can't test for every possible combination of numbers, please be sure to double-check the results of this calculator yourself before considering them to be valid. If you do discover an issue with the calculated results, please report the issue using the feedback form located below the calculator.

Scrolling & Shrinking:

In order to scroll the calculator vertically you will need to swipe just outside of the calculator's dark-blue border, or use the window's far right-hand scroll bar, whichever is applicable to your device.

If the top section of the calculator becomes to tall for your viewport, tapping in the "Enter a problem..." field should reset the top section to its original height.

Disclaimer:

The Algebra Calculator is the only calculator on the site that I did not create myself. And since I did not create it, I don't have access to the code for fixing any issues you may be experiencing. So if you are having issues with the calculator, please visit the support page at Mathway.com for assistance.

Glossary

Fields, Terms, and Definitions.

APY formula:

In case you wish to double check the results of the CD rate calculator, here is the formula for calculating APY:

APY = (1 + r/n )n – 1 where r is the quoted annual interest rate and n is the number of times the interest is compounded per year.

Reset button:

Clicking the "Reset" button will restore the calculator to its default settings.

Pocket Calculator

Calculate any amounts needed to enter into calculator.

 

Data Management

Save and retrieve entries and notes (requires HTML5 compliant web browser).

Calculator Data

Calculator Data:

If you are using the latest version of your web browser software, this feature will allow you to save your calculator entries to your web browser's local storage in between visits. This means the calculator entries can only be recalled with the same device and web browser you were using when you saved them. If you'd like to save data between devices you will need to subscribe to the Ad-Free Member Version.

Save: To save a new set of calculator entries, select "New Data Record" from the dropdown list, enter a nickname for the data record, then click the "Save" button.

Load: To load a previously saved set of calculator entries, simply select the name of the data record from the dropdown list.

Save Changes: To save changes to a set of previously saved calculator entries, be sure the name of the data record is selected, and then click the "Save" button.

Clear: To clear a saved set of entries, be sure the name of the data record is selected, and then click the "Clear" button.

Backup Data
My Notes:
Subscribe to the Cloud level of the Ad-Free Member Version to save your entries and notes to a secure online database, allowing you to access your saved entries from any device or web browser.

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If you would like to use the Save features, please disable ad blocking for this website and refresh the page. Or you can choose to subscribe to the Ad-Free Member Version of the site.

Help and Tools

Help and Tools:

This section, which you can Unstick or Hide in the Calculator Preferences (just above the top of the calculator), contains the following tabs (content too long to fit within bordered frame can be scrolled up and down):

About: Click this tab for an introduction to the calculator.

Instructions: Click this tab for step-by-step instructions for using the calculator.

Terms: Click this tab for a list of the descriptions that are located within each popup help button (info icons).

PCalc: Click this tab for a handy "pocket" calculator you can use when you need to calculate an entry needed for the calculator.

Data: Click this tab to save a set of entries or a note in between visits. Entries and notes will be stored to your web browser's local storage (if supported by your browser of choice), meaning they can only be recalled with the same device and web browser you were using when you saved them. If you'd like to save entries and notes between devices you can do so by subscribing to the Ad-Free Member Version.

 

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