Want to know how a formula is being calculated every step of the way? The tools in Excel's Formula Auditing group can help.

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### Formula Auditing Tools

**Problem:**You are trying to trace how a formula is calculating. If you have Excel 2002 or a later version, there is a cool new tool on the**Formula Auditing**menu. (The**Formula Auditing**tools are found on the**Formulas**tab in Excel 2007 and later.)If you're not getting the type of answer that you'd expect from a formula, this feature can help track the problem down. It's also a nice tool to use when you're trying to understand a spreadsheet exhibit that has been created by someone else.

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### How is a Formula Being Calculated?

**Strategy:**Select the cell with the formula. From the menu, select**Tools – Formula Auditing – Evaluate Formula**, as shown in Fig. 484. (Click any image for a larger view.)**Note:**In Excel 2007, the**Evaluate Formula**tool is found in the**Formula Auditing**grouping on the**Formulas**tab.The

**Evaluate Formula**dialog shows the formula. The first item to be calculated is underlined, as shown in Fig. 485. Click**Evaluate**to calculate the underlined portion of the formula.With each click of

**Evaluate**, Excel will calculate the underlined portion and show the results in italics. It will underline the next step in the calculation. Fig. 486 is after the second**Evaluate**. Excel just revealed that C4 is 1200 (in italics). It is about to calculate the first division in parentheses.**Additional Information:**Any time that the next term to be calculated is a cell reference, you can choose the**Step In**button to evaluate the formula in that cell. In Fig. 487, choosing**Step In**will evaluate D14.As shown in Fig. 488, it is possible to

**Step In**several levels. After seeing the formula for D14, you can choose to**Step In**to see the formula for D15.Use

**Step Out**to close the most recent detail level and go back one level, as shown in Fig. 489.**Summary:**This feature is a great tool. It basically gives you a great appreciation of just how much work Excel does every time you enter a formula, because it allows you to watch the calculation happen in slow motion.**Commands Discussed:**Tools – Formula Auditing – Evaluate Formula - slide 3 of 3
### More Excel Tips

If you're interested in more Excel tips, be sure to check out the hundreds of other Microsoft Excel tutorials available at Bright Hub. In particular, you may find the following collections useful.

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