Free MongoDB Aggregation Playground

Master MongoDBAggregation Pipelines

Build pipelines visually with drag-and-drop, execute them against real sample data, and ace your next interview. No connection string required.

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aggregation pipeline · ecommerce orders3 docs · 0.8ms

1$match{ "status": "delivered" }

2$group{ "_id": "$customerId", "total": { "$sum": "$total" } }

3$sort{ "total": -1 }

4$limit3

// Result: 3 documents

[
  { "_id": "CUST-202", "total": 286.95 },
  { "_id": "CUST-201", "total": 285.94 },
  { "_id": "CUST-205", "total": 135.97 }
]

Everything you need to learn aggregations

Built for developers learning MongoDB and engineers preparing for interviews.

Visually construct pipelines by dragging stages like $match, $group, $project. Reorder with a single drag.

Run your pipeline against built-in sample datasets instantly. See stage-by-stage document counts and execution time.

8+ curated aggregation problems from Easy to Hard. Hints, solutions, and direct links to open in the playground.

E-commerce orders, social media posts, and employee directory — rich, realistic data designed for learning.

Each pipeline stage gets a full Monaco editor with JSON syntax highlighting. The same editor as VS Code.

One click to see the generated MongoDB pipeline JSON. Copy it straight into your application code.

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