How to Resolve Excel Runtime Error 13

This article discusses the causes of the Excel runtime error 13 and provides solutions to resolve it. It also includes recommendations for software solutions and answers frequently asked questions related to this error.

Nene Aly

By Nene Aly / Updated on March 7, 2024

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In this article, we will discuss the Excel runtime error 13 and provide effective solutions to resolve it. This error, also known as 'type mismatch error,' occurs when Excel encounters a data type mismatch while executing a macro or VBA code.

Understanding the Problem

The Excel runtime error 13 occurs due to the following reasons:

  1. Incompatible data types: The most common cause of this error is a mismatch between two data types, such as trying to perform mathematical operations on text or vice versa.
  2. Invalid data entry: If you enter incorrect or invalid data in a cell that is referenced in your VBA code, it may trigger a runtime error 13.
  3. Missing references: When using external libraries or APIs in your VBA code, make sure you have referenced the correct libraries. If a referenced library is missing, it can cause a runtime error 13.


Here are three solutions to resolve the Excel runtime error 13:

Solution 1: Check Data Types

To fix a type mismatch error, follow these steps:

  1. Identify the cells or variables causing the error.
  2. Verify their data types and ensure they are compatible for the intended operations.
  3. Convert data types using built-in Excel functions like Val(), CDbl(), or CStr().
  4. Update your code or formula to handle the desired data types efficiently.

Solution 2: Validate Data Entry

To avoid runtime error 13 due to invalid data entry, follow these steps:

  1. Sanitize user inputs by validating them before using in your code.
  2. Implement data validation in Excel to restrict users from entering incompatible data types.
  3. Create error handling routines to gracefully handle invalid data entries and prevent runtime errors.
  4. Use input masks or custom data entry forms to guide users towards appropriate data types.

Solution 3: Check References

If the runtime error 13 is caused by missing references, follow these steps:

  1. Open the Visual Basic Editor by pressing Alt + F11.
  2. Navigate to the 'Tools' menu and select 'References'.
  3. Ensure that all the required references are checked.
  4. If a reference is missing, uncheck it, close the dialog, and reopen it to rescan for missing references.
  5. Select the missing reference and click 'OK' to restore it.

Software Recommendation

We recommend using the 'Excel Repair Tool' software to fix runtime error 13 in Excel. This software efficiently scans and repairs corrupted Excel files, resolves compatibility issues, and restores stable functionality. The software is user-friendly, intuitive, and supports batch processing for convenient file repairs.


Q: What is the significance of 'runtime error 13' in Excel?

A: The runtime error 13, also known as the 'type mismatch error,' indicates a mismatch between data types in your VBA code or formulas. It typically occurs when attempting mathematical operations on incompatible data types.

Q: How can I avoid runtime error 13 in Excel?

A: To avoid runtime error 13, make sure you verify and validate data types, sanitize user inputs, implement data validation, and check for missing references in your VBA code or formulas.

Q: Can I use Excel functions to convert data types?

A: Yes, Excel provides functions like Val(), CDbl(), or CStr() to convert data types. These functions can be used to ensure compatibility and prevent runtime errors.

Q: Is there a way to automate the resolution of runtime error 13?

A: Yes, by using VBA automation, you can develop error handling routines to automatically handle and resolve runtime errors like error 13. These routines can validate data, convert data types, and handle missing references.

Q: Can I recover corrupted Excel files affected by runtime error 13?

A: Yes, with the help of specialized Excel repair tools like the 'Excel Repair Tool' software recommended earlier, you can recover and repair corrupted Excel files affected by runtime errors, including error 13.

Q: Is it possible to prevent the occurrence of runtime errors?

A: While it's challenging to completely prevent runtime errors, adopting best practices like validating data, sanitizing inputs, implementing error handling routines, and keeping references up to date can significantly reduce the occurrence of runtime errors like error 13.


1. Runtime Error: An error that occurs during the execution of a program or code at runtime.

2. Data Types: The classification of data that determines the values it can hold, the operations it can perform, and the memory space it occupies.

3. VBA: Stands for Visual Basic for Applications, a programming language used for automation in Microsoft Office applications, including Excel.


  • Regularly update your Excel software to benefit from the latest bug fixes and improvements.
  • Backup your Excel files periodically to avoid data loss in case of unexpected errors.
  • Utilize the Excel debugger and error tracking tools to identify and resolve runtime errors effectively.


In conclusion, resolving the Excel runtime error 13 is essential to ensure smooth functioning of your Excel macros and VBA code. By following the provided solutions and recommendations, you can effectively fix the type mismatch error and prevent its occurrence in the future. Additionally, using software like the 'Excel Repair Tool' can help recover and repair corrupted Excel files affected by runtime errors.

Nene Aly
Nene Aly · Editor