Convert PostgreSQL to MongoDB
A free online converter that translates PostgreSQL queries into MongoDB Aggregation. Paste your SQL, press Translate, and Query Studio rewrites the syntax that differs between the two databases — instantly, with no login and nothing stored.
PostgreSQL → MongoDB example
Here is a real PostgreSQL query and the MongoDB output Query Studio produces:
SELECT id, name, email
FROM users
WHERE active = 1 AND created_at > '2024-01-01'
ORDER BY created_at DESC
LIMIT 10;db.users.find({
$and: [
{
active: {
$eq: 1
}
},
{
created_at: {
$gt: "2024-01-01"
}
}
]
}, {
id: "$id",
name: "$name",
email: "$email"
}).sort({
created_at: -1
}).limit(10);What changes from PostgreSQL to MongoDB
- The SELECT becomes a MongoDB find() query or an aggregation pipeline.
- WHERE conditions turn into a $match / filter document.
- JOIN becomes a $lookup stage, and GROUP BY becomes $group.
- ORDER BY and LIMIT become $sort and $limit — computed deterministically, no AI.
How to convert PostgreSQL to MongoDB
- Open the Query Studio editor and choose PostgreSQL as the “From” dialect.
- Choose MongoDB as the “To” dialect.
- Paste your PostgreSQL query and press Translate — copy the MongoDB result.
Try it with your own query
The editor is preloaded with PostgreSQL → MongoDB. You can also explain, format, validate and analyze the result.
Convert PostgreSQL to MongoDB now →PostgreSQL to MongoDB FAQ
Is this PostgreSQL to MongoDB converter free?
Yes — it's completely free with no account, no sign-up and no usage limits. Your query is processed to return the result and never stored.
Is the PostgreSQL to MongoDB conversion accurate?
Query Studio rewrites syntax deterministically using real SQL parsers, so it gives the same result every time. It handles the common differences automatically; always review complex, vendor-specific queries before running them in production.