most microwave ovens do not have a built-in option to completely mute the sound. The beeping or alert sounds in microwaves are intended to serve as a safety feature, letting users know when the cooking process is complete.
However, some microwave models may have a sound or volume control feature that allows you to reduce the volume of the beeps or change the tone. It's worth checking your microwave's user manual or exploring the settings on the control panel to see if there's an option to adjust the sound volume.
If muting the microwave sound is essential for you, some users have found creative solutions such as physically disconnecting the speaker inside the microwave or placing the microwave on a soft surface like a folded towel to dampen the sound. However, these actions may void the microwave's warranty and are not recommended unless you are comfortable with the risks involved.
Keep in mind that microwave designs and features can vary, so if having a silent microwave is a priority for you, it's best to research specific models or brands that might offer this functionality or consider using alternative methods like using a microwave timer app on your phone for monitoring cooking times silently.