How to know MongoDB collection size? : <blockquote>
  <p>db.collection.stats()</p>
</blockquote>

<p>Response : </p>

<pre><code>    "count" : 20696445,
    "size" : NumberLong("1478263842661"),
    "storageSize" : 334732324864,
    "totalIndexSize" : 676327424,
    "indexSizes" : {
            "_id_" : 377094144,
            "leadID_1" : 128049152,
            "leadID_hashed" : 171184128
    },
    "avgObjSize" : 71425.97884134208
</code></pre>

<p>My actual disk size is matched with <strong>storageSize</strong>. So what is the size and other keys.</p>
