How to Convert MM to Inches in Excel 2013: A Step-by-Step Guide

Converting MM to inches in Excel 2013 is a breeze if you know the right formula to use. The process involves entering the conversion factor, which is 0.0393701, and applying it to the cell containing the MM value. After reading this article, you’ll be able to transform those pesky millimeters into inches with just a few clicks.

Once you’ve completed the conversion in Excel 2013, you’ll have a column of data in inches, which can be used for further analysis, reporting, or communication with others who use the imperial system.


When working with Excel 2013, there are endless possibilities for managing, analyzing, and presenting your data. However, sometimes you hit a snag when the data isn’t in the format you need. This is especially true when dealing with measurements. If you’re working internationally or with plans and specifications that were created using the metric system, you’ll likely come across measurements in millimeters (MM). But what do you do when you need those measurements in inches? This is where converting MM to inches comes into play.

Understanding how to convert MM to inches in Excel 2013 is crucial for anyone in industries like manufacturing, engineering, or construction, where precise measurements are critical. It’s also handy for everyday tasks, like converting your body measurements for clothing or understanding the dimensions of a product you’re buying online. Plus, Excel makes it easy and quick, saving you the headache of manual calculations or the need to find a conversion chart each time.

Step by Step Tutorial: Convert MM to Inches in Excel 2013

The following steps will guide you through converting MM to inches using Excel 2013.

Step 1: Enter the Conversion Factor

Type the conversion factor, 0.0393701, into an empty cell.

The conversion factor of 0.0393701 is the number of inches in one millimeter. By typing this number into Excel, you are setting the stage for the conversion. Make sure to note down the cell where you input the conversion factor, as you’ll need it for the next step.

Step 2: Apply the Conversion Factor

Use a simple multiplication formula to apply the conversion factor to the cell containing the MM value.

For example, if your MM value is in cell A1 and your conversion factor is in cell B1, you would enter the formula =A1*B1 into the cell where you want the inch value to appear. This formula will multiply the MM value by the conversion factor, giving you the equivalent measurement in inches.

Step 3: Copy the Formula

Copy the formula to convert additional MM values to inches.

If you have a column of MM values that you want to convert, copy the formula down the column to apply the conversion to all of the cells. This ensures a uniform and quick conversion for multiple values, saving you time and reducing the chance of errors.


Saves TimeManual conversions can be time-consuming, especially for large datasets. Excel’s formula function speeds up the process significantly.
Reduces ErrorsHuman error is a common issue when converting measurements manually. Using Excel minimizes these errors, leading to more accurate results.
Easily ReplicableOnce you’ve set up the formula, it can be copied and applied to numerous cells, simplifying the conversion process for multiple entries.


Requires Understanding of ExcelFor those unfamiliar with Excel functions, the process may seem daunting or confusing.
Potential for Formula MistakesEntering the wrong formula or cell references can lead to incorrect conversions.
Dependent on Correct Conversion FactorIf you use an outdated or incorrect conversion factor, your results will be inaccurate.

Additional Information

While converting MM to inches in Excel 2013 is straightforward, there are a few additional tips to keep in mind. First, ensure that your Excel cells are formatted correctly. The cells containing the MM values should be formatted as numbers, and the cells where you want the inch values should be formatted either as numbers or with the inch symbol, depending on your preference.

Another useful tip is to use absolute cell references for the conversion factor if you’re applying the same factor to multiple cells. To do this, use dollar signs in your formula (e.g., =$B$1*A1). This way, when you copy the formula, the reference to the conversion factor will remain constant, and only the MM value cell reference will change.

Remember to double-check your formulas and results when converting MM to inches in Excel to ensure accuracy. A small error can lead to significant issues, especially in fields where precise measurements are critical. Lastly, if you’re working with a large dataset, consider creating a separate column for the converted values to keep your original data intact.


  1. Enter the conversion factor (0.0393701) into an empty cell.
  2. Apply the conversion factor using a multiplication formula.
  3. Copy the formula to other cells as needed.

Frequently Asked Questions

What is the correct conversion factor from MM to inches?

The accurate conversion factor is 0.0393701 inches per millimeter.

Can I convert inches back to MM in Excel 2013?

Yes, by using the reverse conversion factor, which is 25.4 (the number of millimeters in one inch).

Will this method work for Excel versions other than 2013?

Yes, this conversion method works in most versions of Excel, although the interface and specific features might vary slightly.

Is it possible to convert measurements in bulk using Excel 2013?

Absolutely! Excel excels at handling large amounts of data. Once the formula is set up, it can be copied down a column to apply to hundreds or thousands of entries.

Can I use this conversion for precise engineering measurements?

While Excel is quite accurate, always cross-check your results when precision is critical, as there could be rounding differences in some cases.


Mastering how to convert MM to inches in Excel 2013 is a skill that will save you time and boost your productivity. Whether you’re in a professional setting or working on personal projects, being able to quickly and accurately perform this conversion is incredibly useful.

Remember to follow the steps carefully, pay attention to cell formatting, and always double-check your results. With the right formula and a bit of practice, you’ll be converting measurements like a pro. Now that you know how to convert MM to inches, the world of Excel is your oyster—dive in and explore all the other functionalities it has to offer!

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