BS family · General Purposex86_64 · Intel/AMD

B12ms

The Azure B12ms (Standard_B12ms) is a virtual machine from the Bs series, with 12 vCPUs, 48 GB of RAM and 96 GB of temporary storage. On-demand pricing starts at $0.4990/hour in East US.

Updated September 3, 2026
vCPUs
12
Memory
48 GB
Network
Up to 4–8 Gbps
Storage
96 GB Temp SSD

Save up to $364/mo on every B12ms

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Region
Currency
OS
Pricing Overview

The Azure B12ms costs $0.4990/hour ($364.27/month) for Linux and $0.5470/hour ($399.31/month) for Windows in East US, as of 3 September 2026.

All pricing options

East US · USD · Linux OS · monthly = 730 hrs
Prices exclude local taxes
Term / TierHourlyMonthlySavings
Standard Tier — On-Demand
$0.4990$364.27 Baseline
1-Year Reserved Instance
N/AN/A Baseline
3-Year Reserved Instance
N/AN/A Baseline
Spot Instance
N/AN/A Baseline
You could save $364.27/mo on this instance with the right pricing model.
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Monthly cost estimator

Estimate your spend based on actual usage.
730 h
1h365h730h (24/7)
1
Estimated monthly
$364.27
730 hrs × $0.4990/hr × 1
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Compute

x86_64 · Intel/AMD
vCPUs i12
Memory i48 GB
Physical processorIntel® Xeon® Processor
Nested VirtualizationSupported
Sole TenantSupported
GPUNone
Within BS family
B1s
1 vCPU
B1ls
1 vCPU
B1ms
1 vCPU
B2s
2 vCPU
B2ms
2 vCPU
B4ms
4 vCPU
B8ms
8 vCPU
B12ms
12 vCPU
B16ms
16 vCPU
B20ms
20 vCPU

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Networking

Max egress bandwidth4–8 Gbps
Tier 1 bandwidthN/A
Enhanced networking iYes (gvnic/virtio)
IPv6 supportYes (Dual-stack VPC)

Storage

Max persistent disks48
Max disk size32 TB
Local SSDsSupported (Scratch Disk)
Instance storage: Persistent Disk only by default — attach volumes for persistent storage.

Compare with another instance

vs.
SpecB12msB1sΔ
vCPUs121-92%
Memory48 GB1 GB-98%
Hourly Price$0.4990$0.0104-98%
Monthly Price$364.27$7.59-98%
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Cost optimization

Azure recommender alerts can cut this bill ~30-40%.

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