Well, that's not something that can be predicted precisely. It could continue for a while if the story has more to unfold or come to an end sooner if the plot reaches a natural conclusion.
The Chainsaw Man manga has a considerable length. It consists of multiple volumes and chapters, but the exact number can vary depending on how you count and which editions you refer to.
I don't have the exact figure off the top of my head. But a quick online search or checking with manga enthusiasts should give you the answer about the number of Chainsaw Man manga volumes.
I don't have the exact number of chapters for Chainsaw Man manga off the top of my head. Usually, you can find this information on manga-related websites or by referring to the publisher's updates.
The Chainsaw Man anime goes quite a way into the manga, but it doesn't include everything. There are some parts that are exclusive to the manga and haven't been animated yet. So, if you're a die-hard fan, don't miss out on the manga!