When using the LEFT function, the most common questions are about arguments, unexpected results, and applying the formula across many rows; this FAQ includes 3 common questions and a short glossary.
FAQ
What should I check first if the LEFT result is not correct?
- Check whether the first argument points to the correct text cell.
- Check whether the second argument matches the number of characters you want to extract.
- Confirm that the parentheses, separators, and formula format are complete.
What should I do if LEFT returns an error value?
- Check whether the arguments contain unsuitable values, such as a character-count argument that is not a valid number.
- Re-enter the arguments from the Insert Function dialog box to avoid manual format mistakes.
- If the source text contains extra spaces or unusual characters, clean the text first and calculate again.
How do I use the LEFT function for a whole column?
- Enter the correct LEFT formula in the first target cell.
- Move the pointer to the fill handle at the lower-right corner of the cell.
- Drag downward or double-click the fill handle to copy the formula to other rows.
Glossary
| Term | Definition |
|---|---|
| LEFT function | A text function that returns a specified number of characters from the left side of a text string. |
| Text argument | The original string or cell reference from which LEFT extracts content. |
| Character-count argument | The numeric argument that tells LEFT how many characters to return from the left side. |