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How to use MongoDB ObjectId Generator

Click generate, and the tool builds a valid MongoDB ObjectId with a real Unix timestamp prefix and a random tail, ready to use as a test document id.

Frequently asked questions

Is this a real, usable MongoDB ObjectId?

Yes, it follows MongoDB's exact 12-byte format (4-byte timestamp, 5-byte random, 3-byte counter) and works as a valid _id value.

Is this tool free to use?

Yes. This tool is completely free to use with no daily limits and no signup required.

Can I generate more than one at a time?

Most ID generators here support a bulk mode — set the count and copy the whole list at once.

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