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  • Technical Specifications by Dyno Size

Technical Specifications by Dyno Size

English — 日本語に切り替える

Last updated April 14, 2025

Table of Contents

  • Dynos in Cedar
  • Dynos in Fir
  • Dyno Limits
  • Pricing and Billing
  • Additional Reading

This article covers the technical specifications of each dyno size. To see the features for different dyno tiers, see Dyno Tiers.

To change the dyno size on your app, see Scaling Your Dyno Formation.

Dynos in Cedar

We limit access to Performance dynos to customers with an established payment history. Private and Shield dynos are only available with Cedar-generation Private Spaces and Shield Spaces.

The following dynos are available for Cedar-generation apps, depending on the runtime.

Common Runtime

Plan Memory (RAM) CPU Share Compute $/Month Dyno Units/Month Dedicated Sleeps
Eco 512 MB 1x 1x-4x $5 flat* N/A No ✔
Basic 512 MB 1x 1x-4x $7 0.28 No
Standard-1X 512 MB 1x 1x-4x $25 1 No
Standard-2X 1 GB 2x 2x-8x $50 2 No
Performance-M 2.5 GB 100% 12x $250 8 Yes
Performance-L 14 GB 100% 50x $500 16 Yes
Performance-L-RAM 30 GB 100% 24x $500 16 Yes
Performance-XL 62 GB 100% 50x $750 30 Yes
Performance-2XL 126 GB 100% 100x $1500 60 Yes

*Eco dynos require a $5 flat fee monthly subscription that covers a pool of 1000 hours shared by all Eco dynos in an account. Eco dynos are not available for Heroku Enterprise customers.

Cedar Private Spaces

All Private dynos have dedicated compute resources.

Plan Memory (RAM) CPU Share Compute $/Month Dyno Units
Consumed
Private-S 1 GB 100% 12x $125 5
Private-M 2.5 GB 100% 12x $250 10
Private-L 14 GB 100% 50x $500 20
Private-L-RAM 30 GB 100% 24x $500 20
Private-XL 62 GB 100% 50x $750 30
Private-2XL 126 GB 100% 100x $1500 60

Cedar Shield Private Spaces

All Shield dynos have dedicated compute resources.

Plan Memory (RAM) CPU Share Compute $/Month Dyno Units
Consumed
Shield-S 1 GB 100% 12x $150 6
Shield-M 2.5 GB 100% 12x $300 12
Shield-L 14 GB 100% 50x $600 24
Shield-L-RAM 30 GB 100% 24x $600 24
Shield-XL 62 GB 100% 50x $900 36
Shield-2XL 126 GB 100% 100x $1800 72

Dynos in Fir

All Fir dynos are dedicated compute resources and are only available with Fir-generation Private Spaces.

Family Plan Memory (RAM) vCPUs $/Month Dyno Units Consumed
Classic dyno-1c-0.5gb 0.5GB 1 $25 1
Classic dyno-2c-1gb 1 GB 2 $50 2
General Purpose dyno-1c-4gb 4 GB 1 $80 3
General Purpose dyno-2c-8gb 8 GB 2 $160 6
General Purpose dyno-4c-16gb 16 GB 4 $320 13
General Purpose dyno-8c-32gb 32 GB 8 $640 26
General Purpose dyno-16c-64gb 64 GB 16 $1200 48
Compute dyno-2c-4gb 4 GB 2 $150 6
Compute dyno-4c-8gb 8 GB 4 $300 12
Compute dyno-8c-16gb 16 GB 8 $600 24
Compute dyno-16c-32gb 32 GB 16 $1000 40
Compute dyno-32c-64gb 64 GB 32 $2400 96
Memory dyno-1c-8gb 8 GB 1 $100 4
Memory dyno-2c-16gb 16 GB 2 $250 10
Memory dyno-4c-32gb 32 GB 4 $500 20
Memory dyno-8c-64gb 64 GB 8 $750 30
Memory dyno-16c-128gb 128 GB 16 $1500 60

Dyno Limits

See Dyno Scaling and Process Limits and Dyno Memory Behavior.

Pricing and Billing

We limit access to Performance dynos to customers with an established payment history.

Heroku charges for dynos based on usage, except for the Eco Dynos Plan. See Dynos Usage & Costs for more info, or Dyno Units if you’re an Heroku Enterprise customer.

Additional Reading

  • Guidance for Choosing a Dyno
  • Dyno Scaling and Process Limits
  • Scaling Your Dyno Formation
  • Dyno Tiers
  • Application Load Testing

Keep reading

  • Dyno Reference

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