Estimate monthly Azure Functions costs for Consumption, Premium, and Dedicated plans.
Last verified: April 2026
Free tier includes 1M executions/month
Output will appear here...The Azure Functions Cost Estimator calculates monthly costs across all three hosting plans: Consumption, Premium (Elastic Premium), and Dedicated (App Service). The Consumption plan charges per execution and GB-second with a generous free tier, while Premium provides pre-warmed instances and VNet integration, and Dedicated runs on standard App Service infrastructure. The tool compares all plans side-by-side.
Your team runs an image processing function triggered by Blob Storage uploads. It uses 1 GB memory and runs for 3 seconds per image. At 500,000 images per month, the Consumption plan costs about $22 after free tier. But the function needs to access a SQL Database behind a private endpoint, which requires Premium. The estimator shows Premium costs $180/month minimum for one pre-warmed EP1 instance, helping you justify the expense as the cost of network security.
The Consumption plan free tier resets monthly but the 400,000 GB-seconds are measured at your allocated memory, not actual usage. A function configured for 1.5 GB but only using 200 MB still burns 1.5 GB-seconds per second. Right-size your memory allocation to stay in the free tier longer.
Premium plan pre-warmed instances charge even when idle. If your traffic drops to zero overnight, you are still paying for the minimum instance count. Use Azure Monitor autoscale rules to scale pre-warmed instances to 1 during off-peak hours.
When comparing Consumption vs Premium, factor in VNet integration requirements. Consumption plan cannot access private endpoints or VNet-integrated resources. If you need VNet access, Premium is mandatory and the cost difference is the price of that network capability, not optional overhead.
The estimator calculates Consumption plan costs by multiplying execution count by the per-execution rate, then computing GB-seconds from memory allocation and average duration, and subtracting the monthly free grants. For Premium, it sums the pre-warmed instance hours at the per-vCPU and per-GB memory rates. Dedicated plan cost is calculated from the App Service plan tier pricing regardless of function execution volume.
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