How to convert angle between degrees and radians in Excel?
Converting between degrees and radians is a common task in Excel, especially for engineers, mathematicians, and data analysts working with trigonometric functions. This guide will walk you through all the methods, provide optimization tips, and share best practices for angle conversions in Excel.
Understanding Degrees and Radians
Convert angle between degrees and radians with formula
Convert angle between degrees and radians with Kutools for Excel
Understanding Degrees and Radians
Before diving into Excel functions, let's briefly review these two angle measurement units:
- Degrees: The more familiar unit where a full circle equals 360°
- Radians: The mathematical standard where a full circle equals 2π (about 6.28318) radians
Excel's trigonometric functions (SIN, COS, TAN, etc.) require angles in radians, which is why conversion is often necessary.
Convert angle between degrees and radians with formula
Excel provides two dedicated functions that handle angle conversions seamlessly:
Convert Degrees to Radians
Enter the following formula into a blank cell where you want to get the result, and then drag the fill-handle down to apply it to other cells. See screenshot:
=RADIANS(A2)
Convert Radians to Degrees
On the contrary, if you want to convert radians to degrees, please apply the below formula:
=DEGREES(A2)
Convert angle between degrees and radians with Kutools for Excel
Leveraging Kutools for Excel’s powerful Unit Conversion tool, you can instantly switch angles between degrees and radians—as well as dozens of other unit types (length, weight, temperature, volume, and more)—with just a few clicks, entirely formula-free.
- Select a range that you want to convert the angel units.
- Click Kutools > Content > Unit Conversion. See screenshot:
- In the Unit Conversion dialog box, click the drop-down list and select Angle under Units option, and then specify the units you want to convert between in the two list boxes, you can see the converted result in the Preview pane. See screenshot:
- Click OK or Apply. All the selected data are converted to the new units.
Applying this utility will change the original data. However, if you want to keep the original data, you can add the converted results as comments by checking the Add results as comments box in the dialog. See screenshot: 
Conclusion
For most Excel users, native formulas provide sufficient angle conversion capabilities with maximum flexibility and precision. The RADIANS() and DEGREES() functions offer straightforward solutions that integrate seamlessly with Excel's calculation engine.
Kutools for Excel presents a compelling alternative for users who:
- Perform frequent unit conversions
- Work with various measurement types
- Prefer graphical interfaces over formula entry
- Need to process large datasets efficiently
Evaluate your specific needs, frequency of conversions, and collaboration requirements to determine the optimal approach for your Excel workflows. Both methods can produce accurate results when implemented properly, so choose the one that best aligns with your technical comfort level and project demands. If you're interested in exploring more Excel tips and tricks, our website offers thousands of tutorials to help you master Excel.
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