MongoDB 6.0.13

Online MongoDB Editor & Code Runner

Name: myCompiler MongoDB
Author: myCompiler

myCompiler is a free online MongoDB editor and code runner that lets you write, run, and share MongoDB code directly in your browser. It works as your MongoDB playground, sandbox, fiddle, cloud compiler, and online REPL. No downloads, no installation needed. Just open the editor and start coding with syntax highlighting, autocomplete, and instant output.

Start coding in MongoDB How it works

27+ languages Used by 1M+ developers Free forever

main.js

db.users.insertMany([
  { name: "Alice", age: 25, city: "NYC" },
  { name: "Bob", age: 30, city: "LA" },
  { name: "Charlie", age: 35, city: "NYC" }
]);

db.users.find({ city: "NYC" }).forEach(printjson);

Output

{ "name" : "Alice", "age" : 25, "city" : "NYC" } { "name" : "Charlie", "age" : 35, "city" : "NYC" }

How to run MongoDB code online

Three steps to go from idea to running MongoDB code in this online playground. No account required.

Write your code

Open the MongoDB editor and start writing. The smart editor gives you syntax highlighting, autocomplete, and error detection as you type.

Click Run

Hit the Run button or press +Enter to run your MongoDB code on secure, sandboxed cloud servers.

See results

Output appears instantly in the integrated terminal. Errors and exceptions show up with clear, helpful messages.

Everything you need to code in MongoDB

A complete online MongoDB IDE and coding playground in your browser. Write, run, and share code without any setup.

Zero setup required

Start coding in seconds with this browser-based MongoDB interpreter. No downloads, no installations, no environment configuration. Open your browser, go to myCompiler, and start writing MongoDB code immediately.

Works on any device with a web browser. Desktop, laptop, tablet, phone, Chromebook. There is nothing to install and nothing to configure.

Feature-rich code editor

Write MongoDB with a professional-grade code editor built into your browser. Syntax highlighting colors your code for readability, making keywords, strings, and functions easy to distinguish at a glance.

Intelligent autocomplete suggests methods and properties as you type, and real-time error detection catches mistakes before you run your code.

Multi-file projects

Create and manage multiple files in a single project. Use the file sidebar to organize your code into modules, then import them across files just like in a desktop IDE.

Build modular applications with proper project structure. Each file is editable, and you can switch between them instantly.

Run code instantly

Click the Run button or press +Enter to execute your MongoDB code instantly. This online code runner displays output immediately in the integrated terminal panel. Your code runs on secure, sandboxed cloud servers and results appear in seconds.

Error messages and tracebacks are displayed clearly, making it easy to find and fix issues. The terminal supports ANSI colors for rich output formatting.

Ready to try it? Write and run your first MongoDB program in seconds.

Open MongoDB editor

MongoDB on myCompiler

myCompiler runs MongoDB 6.0.13, always up to date with the latest stable release. You get a full browser-based IDE with syntax highlighting, intelligent code completion, multi-file project support, a built-in terminal for real-time output, and standard input (stdin) for interactive programs. Write, compile, run, and debug MongoDB code on any device. Desktop, laptop, tablet, phone, Chromebook. Zero downloads, zero configuration, and no sign-up required. Save your programs with a unique URL and share them with anyone. You can also embed a working MongoDB editor on your own website.

Use this online MongoDB playground as a quick code executor for testing snippets, a coding sandbox for learning, or a cloud compiler for coding interview preparation. The editor includes dark mode for comfortable coding, keyboard shortcuts for faster workflows, and clear error messages with line numbers so you can debug quickly. Students use it for homework and practice. Teachers use it to share working examples. Developers use it to prototype ideas. myCompiler is beginner-friendly, fast, and completely free. It works in any modern web browser.

Start coding in MongoDB

MongoDB code examples

Common MongoDB patterns you can try in the online compiler. Each example is ready to run.

Insert and Find in MongoDB

main.js

db.users.insertMany([
  { name: "Alice", age: 25, city: "NYC" },
  { name: "Bob", age: 30, city: "LA" },
  { name: "Charlie", age: 35, city: "NYC" }
]);

db.users.find().forEach(printjson);

Collections in MongoDB

main.js

db.students.insertMany([
  { name: "Alice", age: 20, grade: 3.8 },
  { name: "Bob", age: 22, grade: 3.5 },
  { name: "Charlie", age: 21, grade: 3.9 }
]);

print("Count: " + db.students.countDocuments());
db.students.find({}, { _id: 0 }).forEach(printjson);

Query and Filter in MongoDB

main.js

db.products.insertMany([
  { name: "Laptop", price: 999, category: "Electronics" },
  { name: "Book", price: 20, category: "Education" },
  { name: "Phone", price: 699, category: "Electronics" }
]);

db.products.find({
  price: { $gt: 100 },
  category: "Electronics"
}).forEach(printjson);

Sort and Limit in MongoDB

main.js

db.scores.insertMany([
  { student: "Alice", score: 92 },
  { student: "Bob", score: 78 },
  { student: "Charlie", score: 95 },
  { student: "Diana", score: 88 }
]);

db.scores.find({}, { _id: 0 })
  .sort({ score: -1 })
  .limit(3)
  .forEach(printjson);

Update and Delete in MongoDB

main.js

db.users.insertMany([
  { name: "Alice", email: "alice@old.com" },
  { name: "Bob", email: "bob@mail.com" }
]);

db.users.updateOne(
  { name: "Alice" },
  { $set: { email: "alice@new.com" } }
);

db.users.find({}, { _id: 0 }).forEach(printjson);

Aggregate and Group in MongoDB

main.js

db.sales.insertMany([
  { product: "A", region: "North", amount: 100 },
  { product: "A", region: "South", amount: 150 },
  { product: "B", region: "North", amount: 200 }
]);

db.sales.aggregate([
  { $group: { _id: "$product", total: { $sum: "$amount" } } },
  { $sort: { total: -1 } }
]).forEach(printjson);

Indexes in MongoDB

main.js

db.logs.insertMany([
  { level: "INFO", msg: "App started", ts: new Date() },
  { level: "ERROR", msg: "Failed", ts: new Date() },
  { level: "INFO", msg: "Request OK", ts: new Date() }
]);

db.logs.createIndex({ level: 1 });
db.logs.find({ level: "ERROR" }, { _id: 0 }).forEach(printjson);

Nested Documents in MongoDB

main.js

db.orders.insertOne({
  customer: "Alice",
  items: [
    { product: "Widget", qty: 3, price: 10 },
    { product: "Gadget", qty: 1, price: 25 }
  ],
  total: 55
});

db.orders.find(
  { "items.product": "Widget" },
  { _id: 0 }
).forEach(printjson);

Unique Constraints in MongoDB

main.js

db.accounts.createIndex({ email: 1 }, { unique: true });

db.accounts.insertOne({ name: "Alice", email: "alice@test.com" });

try {
  db.accounts.insertOne({ name: "Bob", email: "alice@test.com" });
} catch (e) {
  print("Error: " + e.message);
}

db.accounts.find({}, { _id: 0 }).forEach(printjson);

Aggregation Pipeline in MongoDB

main.js

db.orders.insertMany([
  { product: "A", qty: 10, price: 5 },
  { product: "B", qty: 3, price: 20 },
  { product: "A", qty: 7, price: 5 },
  { product: "B", qty: 5, price: 20 }
]);

db.orders.aggregate([
  { $group: {
    _id: "$product",
    totalQty: { $sum: "$qty" },
    revenue: { $sum: { $multiply: ["$qty", "$price"] } }
  }},
  { $sort: { revenue: -1 } }
]).forEach(printjson);

Try these examples in the editor

How to take input in MongoDB online

myCompiler supports standard input (stdin) for MongoDB programs. Use MongoDB's standard input functions to read user input. Enter your input data in the stdin panel before running your program.

This works for both single-line and multi-line input. You can read strings and convert to numbers using the language's built-in I/O functions.

Try it yourself

main.js stdin supported

// MongoDB reads from collections, not stdin
db.greetings.insertOne(
  { name: "Alice", age: 25 }
);

db.greetings.find().forEach(function(doc) {
  print("Hello " + doc.name + "!");
  print("You'll be " + (doc.age + 1) + " next year.");
});

Output

Hello Alice!
You'll be 26 next year.

No setup, no sign-up. Start writing MongoDB code right now.

Start coding now

Getting started with MongoDB online

You can start writing and running MongoDB code right now without installing anything. Type your code, and click Run. This free MongoDB code runner executes your program instantly and displays the output in the terminal panel below the editor. Open the MongoDB online editor, type your code, and click Run.

If you're new to MongoDB, use this online MongoDB playground to start with the basics like variables, data types, conditionals, and loops. The code examples above cover all the fundamentals you need to get started. Each example can be copied into the sandbox and run immediately. No setup, no configuration.

As you progress, try creating multi-file projects, using libraries, and sharing your programs with others via URL. Sign up for a free account to save your work and build a personal library of programs. myCompiler works as a full online MongoDB IDE right in your browser.

Who uses myCompiler

Whether you're learning to code, preparing for interviews, or prototyping ideas, myCompiler is built for you.

Students & Learners

Practice exercises, complete homework assignments, and experiment with code without installing anything on school or personal computers.

Teachers & Educators

Share code examples with students via unique URLs. Embed the compiler in course materials so students can run examples directly in the browser.

Interview Candidates

Practice coding interview problems, test algorithms, and verify solutions quickly during preparation for technical interviews.

Professional Developers

Quickly prototype ideas, test code snippets, or try out a library without setting up a local environment. Great for quick experiments.

Content Creators & Bloggers

Embed interactive examples in blog posts, tutorials, and documentation so readers can run code without leaving the page.

Teams & Collaborators

Share code snippets with colleagues via URLs. Others can view, run, and fork your code to build on your work.

myCompiler vs. local IDE

Why use an online MongoDB compiler instead of installing one locally?

Feature	myCompiler	Local IDE
Setup time	Instant	Minutes to hours
Installation	None required	MongoDB + IDE required
Device support	Any browser	Desktop only
Sharing code	One-click URL	Manual (file, git, etc.)
Languages	27+ in one place	One at a time
Cost	Free forever	Free to $$$
Works on Chromebook	Yes	Limited

What is MongoDB?

MongoDB is a popular NoSQL document database that stores data in flexible, JSON-like documents called BSON (Binary JSON). Developed by Dwight Merriman, Eliot Horowitz, and Kevin Ryan, MongoDB was first released in 2009. Unlike relational databases, MongoDB has no fixed schema, each document in a collection can have a different structure, making it ideal for evolving data models.

MongoDB's document model maps naturally to objects in most programming languages, eliminating the need for complex object-relational mapping (ORM). Its powerful aggregation pipeline enables sophisticated data transformations in the database. MongoDB Atlas, the cloud-hosted version, has made MongoDB even more accessible for modern web applications.

What is MongoDB used for?

MongoDB is used for real-time web applications with flexible data models, content management systems where content structure varies, user profiles and personalization with nested documents, product catalogs with varying attributes, event logging and time-series data, and mobile app backends via MongoDB Realm. The MEAN stack (MongoDB, Express, Angular, Node.js) and MERN stack made MongoDB a staple of modern JavaScript full-stack development.

MongoDB for beginners

MongoDB is approachable for beginners, especially those coming from JavaScript, because documents look exactly like JavaScript objects. Commands like db.users.find({age: {$gt: 18}}) are readable and intuitive. The flexible schema means you can start prototyping without designing a full database schema upfront. Use myCompiler's online MongoDB editor to practice CRUD operations, queries, and aggregation pipelines.

MongoDB vs other languages

Compared to relational databases (MySQL, PostgreSQL), MongoDB offers flexible schemas and horizontal scaling, but lacks joins and ACID transactions across collections (though multi-document ACID transactions are now supported). Compared to PostgreSQL with JSONB, MongoDB is designed specifically for documents while PostgreSQL offers relational features alongside JSON. Compared to Redis, MongoDB is a full-featured document store while Redis is an in-memory key-value cache.

Why use an online MongoDB compiler?

An online MongoDB editor, also called a MongoDB sandbox or Mongo playground, lets you run MongoDB queries directly in your browser without installing MongoDB locally. This is ideal for learning MongoDB's query syntax, practicing aggregation pipelines, understanding document modeling, and experimenting with MongoDB operators like $match, $group, and $lookup.

myCompiler's online MongoDB IDE provides a full MongoDB shell environment. Create collections, insert documents, query with find and aggregate, update with $set and $push, and use all MongoDB query operators. Each session starts with a fresh database. Save and share scripts via URL, completely free.

Why is MongoDB so popular?

MongoDB became the defining NoSQL database of the web era. Its flexible document model resonated with developers building applications where data structures change frequently, social networks, e-commerce, content platforms. MongoDB Atlas, its cloud database service, has millions of users and is one of the most popular managed database services on AWS, Google Cloud, and Azure. The MERN stack has kept MongoDB a go-to choice for JavaScript full-stack developers.

MongoDB career opportunities

MongoDB skills are valued for full-stack developer, backend engineer, database engineer, and data engineer roles, particularly in companies using the MEAN or MERN stack. MongoDB Atlas and Realm expertise is increasingly sought for cloud-native applications. DBA and performance engineering roles specializing in MongoDB are also in demand at companies with large MongoDB deployments.

Try MongoDB online Free · No sign-up needed

Keyboard shortcuts

Code faster with these keyboard shortcuts in the myCompiler editor.

Run code

+ Enter

Save program

+ S

Toggle comment

+ /

Indent line

Tab

Unindent line

Shift + Tab

Undo

+ Z

Select next occurrence

+ D

Find & replace

+ H

Embed the MongoDB compiler on your website

Add an interactive MongoDB compiler to your website, blog, or learning platform. Readers can write and run MongoDB code directly on your page without leaving it.

Perfect for technical tutorials, coding courses, documentation, and educational content. Save a program on myCompiler and use the embed link to add it to any webpage.

Embedded MongoDB editor and code runner

HTML

<iframe
src="https://www.mycompiler.io
    /embed/mongodb"
width="100%"
height="400"
frameborder="0">
</iframe>

Why developers choose myCompiler

A full-featured online IDE for MongoDB and 27+ other programming languages.

27+ Languages

Python, JavaScript, Java, C++, Rust, Go, TypeScript, C#, and many more. All compilers and interpreters in one place. Switch languages instantly.

Dark & Light Mode

Switch between light and dark themes with one click. Code comfortably in any lighting condition, day or night.

Mobile Friendly

Fully responsive editor optimized for phones, tablets, and Chromebooks. Code on any device with a web browser. No app download needed.

Save & Share Code

Save programs to your account, share via unique URLs, and let others view, fork, and run your code. Great for collaboration and code reviews.

Tags & Organization

Organize your saved programs with tags and find them quickly with search and filters. Build a personal library of code snippets and solutions.

No Account Required

Start writing and running code immediately. No sign-up, no email, no credit card. Create a free account later only if you want to save your work.

Explore more programming languages

myCompiler supports 27+ languages. Switch between them anytime. All free, all in one place.

View all 27+ languages

Frequently asked questions

Common questions about using the online MongoDB compiler, playground, and code runner.

Yes! myCompiler is completely free for all supported languages including MongoDB. There are no subscriptions, no premium tiers, and no hidden costs. Every feature is available at no charge.

myCompiler keeps its MongoDB environment up to date. You can see the exact version on the language details section of this page. We regularly update all language runtimes to their latest stable versions.

myCompiler provides a MongoDB shell environment. You can create collections, insert documents, run queries with find and aggregate, and use MongoDB's query operators. Each session starts with a fresh database.

Simply open the MongoDB editor, write or paste your code, and click the Run button. Your code will be executed on our servers and the output will appear in the terminal panel within seconds.

Yes. Click Save to store your program. You will receive a unique URL that you can share with anyone. Recipients can view, fork, and run your code.

Yes. myCompiler supports multi-file projects. You can create, rename, and delete files in the sidebar. This lets you organize your MongoDB code just like in a local IDE.

Yes. All code runs in isolated containers on our servers. Each execution gets its own sandboxed environment that is destroyed after completion. Your code cannot affect other users or our infrastructure.

Yes. myCompiler has a responsive design optimized for phones and tablets. You can write and run MongoDB code on the go. The mobile interface uses tabs for switching between the editor, output, and file panels.

Yes. Click the Input tab in the bottom panel, type or paste your input data, then click Run. Your program will read from the input you provided.

Execution is fast. Code runs on our optimized cloud infrastructure and output typically appears within seconds. Execution time depends on the complexity of your program.

Yes. myCompiler provides an embed feature. You can copy an iframe snippet and paste it into your website, blog, or documentation. Visitors can edit and run code directly on your page.

myCompiler supports common editor shortcuts including Run (Ctrl/Cmd+Enter), Save (Ctrl/Cmd+S), Find (Ctrl/Cmd+F), and more. See the keyboard shortcuts section on this page for the full list.

No. myCompiler requires an internet connection because code is compiled and executed on our cloud servers. The editor itself loads in your browser, but running code requires connectivity.

myCompiler offers a fast, free, zero-setup environment with a modern code editor, multi-file support, dark mode, and instant sharing. It is ideal for learning, prototyping, interviews, and sharing code examples.

Yes. myCompiler is great for practicing algorithms and coding problems. You can write MongoDB code, provide custom input, and test your solutions instantly. Save your work and come back to it anytime.

Use print statements or console output to trace your program's behavior. myCompiler shows all standard output and error messages in the terminal panel. Error messages include line numbers to help you locate issues.

Ready to write MongoDB code?

Open the free MongoDB playground and start coding immediately. No downloads, no account required.

Start coding in MongoDB

Free · No sign-up required · MongoDB 6.0.13