How to count documents of a collection in MongoDB

Today, I had to do this at work. turns out it is very easy. I am using Robomongo 1.0-RC1. I just double click on the collection that I want, in this case knives and I just execute the following query: db.getCollection(‘knives’).count() The result in my case is: 1911 Hope it helps! Sources https://docs.mongodb.com/manual/reference/method/db.collection.count/