How to Change a Picture to Black & White in Microsoft Word
Microsoft Word 2013 offers several color adjustment options to ensure your images are displayed according to your tastes and needs. Whether you prefer the artistic effect of black and white or just want the screen to match what your non-color printer will produce, Word offers automatic and manual adjustments to remove color saturation and convert images to black and white.
Click on the image you want to edit and then select the "Format" tab. Click the "Color" drop-down menu in the Adjust group and then select the "Saturation: 0%" thumbnail in the Saturation section to remove color. You can also manually adjust these settings by choosing "Picture Color Options" and then moving the "Saturation" slider all the way to the left. Word makes these adjustments reversible, so if you change your mind about the color, click "Reset Picture" in the Format tab's Adjust group to revert the image to its original form.
Color Adjustment Limitations
The color adjustment options only affect the picture within Word and have no effect on the original file; if that's what you're after, you'll need a graphics program to accomplish that task. Furthermore, these color adjustments are only available for DOCX files. If you're in Compatibility Mode after saving or opening a DOC file, you'll need to use the "Save as" option to save the file in the more modern DOCX format and make the adjustments in that file instead.