The Windows 10 operating system includes a built-in Calculator app. The new Calculator app has replaced the classic Calculator program, but one can get classic Calculator in Windows 10 as well by following directions in our how to get Windows 7 style classic Calculator in Windows 10. Like other built-in apps, at times, the Calculator app refuses to open or crashes as soon as the app is launched. If you are having issues with the Calculator app in Windows 10, the following solutions might help you fix the Calculator. Solution 1 of 4 Reset the Calculator app There is a provision in Windows 10 to reset apps. You can use the same to reset the Calculator app. Microsoft recommends resetting an app if the app is not working. So, here is how to do that. Step 1: Open Settings. Navigate to System > Apps & features. If you are on Windows 10 Creators Update (build 14997 or later), you need to navigate to Settings > Apps > Apps & features. Step 2: Look for the Calculator app entry. Select the Calculator app by clicking or tapping on it. You should now see the Advanced options link. Click Advanced options link to open Storage usage and app reset page. Step 3: Here, click the Reset button. And when you see the confirmation dialog, click the Reset button again to reset the Calculator app. Solution 2 of 4 Reinstall the Calculator in Windows 10 If the issue persists even after resetting the app, you can consider reinstalling Calculator. Since Windows 10 doesn’t offer an easy way to uninstall the Calculator, you need to either use the PowerShell or a third-party tool such as CCleaner to uninstall the app before installing the same from the Store. We have already covered about reinstalling the Calculator. So, please refer to our how to reinstall Calculator in Windows 10 guide for step-by-step directions. Solution 3 of 4 Reset Windows 10 install If none of the above methods fixed the Calculator issue, you could reset the Windows 10 install to fix the problem. However, remember that resetting Windows 10 removes all installed third-party apps as well as programs. Refer our how to reset Windows 10 without losing data for directions. Solution 4 of 4 Install a third-party Calculator program If the built-in Calculator is not working even after trying solutions mentioned above, you can install one of the many third-party Calculator programs out there for Windows operating system. You can even try to install the classic Windows 7-style Calculator in Windows 10. How to use Windows 10 Calculator keyboard shortcuts guide might also interest you.