MongoDB Relational Migrator's pricing tiers
Per mongodb.com/products/tools/relational-migrator and mongodb.com/docs/relational-migrator, checked 2026-09-22.
What actually drives the bill up
▲The tool itself has no license cost — MongoDB gives it away as an on-ramp to Atlas.
▲The real cost is downstream: wherever the migrated data ends up (Atlas cluster tier, or self-hosted compute) is billed under standard MongoDB hosting pricing.
▲Continuous sync depends on a self-run Kafka or Confluent Cloud deployment — the same infrastructure cost profile as Debezium above.
▲It only runs one direction (relational → MongoDB), so there's no cost comparison for the reverse direction at all.
How NoSQLSync compares
✓Both are free to start, but Relational Migrator cannot move MongoDB out to SQL at all — for teams moving off MongoDB, this isn't a pricing comparison, it's a capability gap.
✓NoSQLSync's CDC is natively managed at every tier that includes it; Relational Migrator's continuous-sync mode depends on a self-run Kafka deployment.
✓NoSQLSync's Free plan (5 migrations/month, 5 GB/month, all sources/targets) is a comparably free entry point for the direction Relational Migrator doesn't cover.
Free
$0
Developer
$49/mo
Team
$249/mo
Business
$899/mo
Enterprise
Custom
Frequently asked questions
Is MongoDB Relational Migrator really free?
Yes — MongoDB offers it at no cost as an on-ramp to Atlas. Wherever your MongoDB ends up (Atlas or self-hosted) has its own standard hosting cost, but the tool itself has no paid tier.
Can I use it to migrate MongoDB back out to a SQL database?
No — it only runs relational-to-MongoDB. There is no reverse mode; that's what NoSQLSync is for.
Other pricing comparisons
See the flat monthly price up front
No credits, no per-row meters, no usage estimate needed. Free plan included.
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