MongoDB Atlas Pricing 2026 — Cluster Costs & Storage Fees

Editorial source pass: August 20, 2026. Primary vendor references: MongoDB pricing. Current-price claims on this page were reviewed against the linked primary source; the vendor checkout remains authoritative for a quote. Currency, region, taxes, usage and contract terms can change the final price.

MongoDB Atlas Pricing Tiers (checked August 20, 2026)

Cluster Type	Cost	Storage	Connections	Use Case
Free Tier (M0)	$0	512 MB	~100	Learning, testing
Flex	$0.011/hour; $8–$30/month	5 GB included	Usage-based	Prototypes and variable workloads
Dedicated	From $0.08/hour (~$56.94/month)	10 GB–4 TB	Configuration-dependent	Production apps

Shared clusters: Monthly billing. Dedicated clusters: Hourly billing ($0.076/hour for M10 = ~$57/month running 24/7).

Storage & Overage Pricing

Shared M2: Extra GB/month $0.32

Shared M5: Extra GB/month $0.25

Dedicated M10-M30: Extra GB/month $0.10

Backup storage: Per GB/month $0.20

Dedicated Cluster Pricing Examples

Dedicated clusters are billed hourly, so cost depends on uptime. Examples below assume 24/7 running (~730 hours/month):

M10 Cluster (General Purpose)

Hourly rate (US) $0.076/hour

Monthly (730 hours) ~$57/month

Storage included 10 GB

M20 Cluster (Standard)

Hourly rate (US) $0.26/hour

Monthly (730 hours) ~$190/month

Storage included 40 GB

Cost Estimation Examples

Scenario 1: Startup with Growing User Base

Shared Tier M2 $57/month

Storage: 1.5 GB (included in M2) $0

Backup storage: 500 MB $0.10

Total ~$57/month

Scenario 2: Production Web Application

Dedicated M20 cluster $190/month

Storage: 35 GB (included in M20) $0

Backup storage: 40 GB $8.00

Total ~$198/month

MongoDB Atlas vs Alternatives

vs Firebase Firestore: MongoDB is document database; Firestore is real-time database. MongoDB better for complex queries, Firestore better for mobile/real-time apps.
vs Supabase (PostgreSQL): MongoDB is NoSQL; Supabase is SQL. Different query patterns. MongoDB good for flexible schemas, Supabase good for relational data.
vs DynamoDB: MongoDB is self-hosted or managed; DynamoDB is AWS-only. MongoDB more flexible, DynamoDB deeply integrated with AWS ecosystem.

When to Upgrade from Free Tier

Upgrade to Shared M2 ($57/month) when:

Your data exceeds 512 MB
You need better performance and reliability
You're running a production application
You need more concurrent connections (>100)
You want automated backups and 99.95% uptime SLA

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