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jyd519/mongodb_collection_sizes.js

Forked from joeyAghion/mongodb_collection_sizes.js
Created August 15, 2025 08:46
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List mongodb collections in descending order of size. Helpful for finding largest collections. First number is "size," second is "storageSize."
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mongodb_collection_sizes.js
var collectionNames = db.getCollectionNames(), stats = [];
collectionNames.forEach(function (n) { stats.push(db[n].stats()); });
stats = stats.sort(function(a, b) { return b['size'] - a['size']; });
for (var c in stats) { print(stats[c]['ns'] + ": " + stats[c]['size'] + " (" + stats[c]['storageSize'] + ")"); }
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