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OCI Compute Cost Calculator

Price OCI flexible shapes from separate OCPU-hour and GB-hour meters, including Ampere A1 and the Always Free grant.

About OCI Compute Cost Calculator

OCI prices flexible shapes as two independent meters, so an instance costs OCPUs × the OCPU rate plus GB × the memory rate for every hour it runs. Because 1 OCPU is a full core, an x86 OCPU delivers two vCPUs while an Ampere A1 OCPU delivers one, which is why comparing OCI to per-vCPU pricing elsewhere needs the factor of two applied first. Splitting compute into OCPU and memory meters means you can shrink one without the other, and the free Ampere grant can cover a small always-on fleet entirely — confirm the current per-OCPU and per-GB rates in the Oracle Cloud cost estimator for your region before you budget.

Formula

OCI Compute Cost

monthly = instances × hours × (OCPUs × OCPU rate + GB × memory rate), after subtracting the free Ampere OCPU-hours and GB-hours.

744
Hours the Oracle cost estimator bills for a full month
OCPU
One OCPU equals 2 x86 vCPUs or 1 Ampere Arm core
OCPU rate
Per-OCPU-hour price of the shape family
memory rate
Per-GB-hour price, billed on its own SKU

Worked example

With the default values below, OCI Compute Cost Calculator returns Monthly Cost of $660.67. Change any input above and every figure here is recalculated in your browser.

Inputs used

Instance shapeone of Standard E5 Flex (AMD x86), Standard E4 Flex (AMD x86), Standard X9 Flex (Intel x86), Ampere A1 Flex (Arm)
Standard E5 Flex (AMD x86)
OCPUs per instanceaccepts 1–128 OCPU
4 OCPU
Memory per instanceaccepts 1–1,024 GB
32 GB
Number of instancesaccepts 1–5,000 instances
6 instances
Price per OCPU-houraccepts 0–50 USD/OCPU-hour
0.025 USD/OCPU-hour
Price per GB-hour of memoryaccepts 0–5 USD/GB-hour
0.0015 USD/GB-hour
Billed hours per monthaccepts 1–744 hours
744 hours
Apply the monthly Ampere free grant
No

Results

Monthly Cost
$660.67
OCPU Charge
$446.40
Memory Charge
$214.27
Total vCPUs Delivered
48 vCPU
Billed OCPU-Hours
17,856
Cost per Instance
$110.11
Memory-per-OCPU Check
Valid at 8 GB per OCPU
Annual Cost
$7,928.06

Step by step

  1. 1Values used
  2. 2OCI Compute Cost
  3. 3Monthly Cost= 660.67
  4. 4OCPU Charge= 446.40
  5. 5Memory Charge= 214.27
  6. 6Total vCPUs Delivered= 48 vCPU
  7. 7Billed OCPU-Hours= 17,856
  8. 8Cost per Instance= 110.11

Assumptions and limits

  • The result is derived only from the 8 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation, tax or compounding frequency into account.
  • Figures are rounded for display to 2 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is OCI Compute Cost calculated?

monthly = instances × hours × (OCPUs × OCPU rate + GB × memory rate), after subtracting the free Ampere OCPU-hours and GB-hours. OCI prices flexible shapes as two independent meters, so an instance costs OCPUs × the OCPU rate plus GB × the memory rate for every hour it runs. Because 1 OCPU is a full core, an x86 OCPU delivers two vCPUs while an Ampere A1 OCPU delivers one, which is why comparing OCI to per-vCPU pricing elsewhere needs the factor of two applied first.

Why does OCI Compute Cost matter?

Splitting compute into OCPU and memory meters means you can shrink one without the other, and the free Ampere grant can cover a small always-on fleet entirely — confirm the current per-OCPU and per-GB rates in the Oracle Cloud cost estimator for your region before you budget.

What values do I need to enter?

This calculator takes 8 inputs: Instance shape, OCPUs per instance, Memory per instance, Number of instances, Price per OCPU-hour, Price per GB-hour of memory, Billed hours per month, Apply the monthly Ampere free grant. The pre-filled defaults are a realistic starting point — replace them with figures from your own environment for a result you can act on.

Is an OCI OCPU the same as a vCPU?

No. On x86 shapes one OCPU is a physical core with two hyper-threads, so it is billed as one OCPU but shows up as two vCPUs in the guest. On Ampere A1 one OCPU is one physical Arm core and one vCPU, which is why the vCPU total here changes with the shape you pick.

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