VBA Run Time Errors

Run-time error '6': Overflow

Incorrect code

Sub DoSomething()
 Dim row As Integer
 For row = 1 To 100000
 'do stuff
 Next
End Sub

Why doesn't this work?

The Integer data type is a 16-bit signed integer with a maximum value of 32,767; assigning it to anything larger than that will overflow the type and raise this error.

Correct code

Sub DoSomething()
 Dim row As Long
 For row = 1 To 100000
 'do stuff
 Next
End Sub

Why does this work?

By using a Long (32-bit) integer instead, we can now make a loop that iterates more than 32,767 times without overflowing the counter variable's type.

Other notes

See Data Types and Limits for more information.

Conclusion

In this page (written and validated by A. Gawali) you learned about VBA Run Time Errors . What's Next? If you are interested in completing VBA tutorial, your next topic will be learning about: VBA Error Handling.

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