Infrastructure Cost per Service Calculator
Direct cost plus a share of shared platform cost, by your own driver.
In short
Formula: Service cost = Direct cost + Shared cost × (Service driver / Total driver); Cost per unit = Service cost / Units delivered
What this calculator does
Allocation and unit economics in the FinOps Framework sense. The allocation driver is chosen and entered by the user; no default split, equal share or headcount rule is applied.
Use it to turn Currency, Infrastructure billed directly to the service, Shared infrastructure cost to allocate (optional), This service's share of the allocation driver (optional), and the other shown inputs into a checked result you can compare, copy, or rerun with different assumptions.
The page shows the formula, a numeric worked example, and the assumptions that affect this professional & industry calculation.
Inputs and what they mean
- Currency
- — Amounts are shown in the currency you pick. No exchange rate is applied..
- Infrastructure billed directly to the service
- — number value.
- Shared infrastructure cost to allocate (optional)
- — Optional component. Leave at 0 to exclude it from the result..
- This service's share of the allocation driver (optional)
- — Optional component. Leave at 0 to exclude it from the result. For example this service's CPU hours, requests or storage..
- Total allocation driver across all services (optional)
- — Optional component. Leave at 0 to exclude it from the result. The same measure, summed across every service sharing the cost..
- Units the service delivered (optional)
- — Optional component. Leave at 0 to exclude it from the result. Requests, transactions or customers, if you want a cost per unit..
- Price as of (optional)
- — The date you took these prices. It is shown with the result so the figure is never read as a current vendor price..
- Price source (optional)
- — Where the prices came from. Shown with the result..
How to use it
- Enter your own figures — the calculator never fills in a rate, price or benchmark for you.
- Press Calculate to see the result.
- Read the formula, variables, assumptions and source below the result before you rely on it.
Formula
Service cost = Direct cost + Shared cost × (Service driver / Total driver); Cost per unit = Service cost / Units delivered.
Inputs used: Currency, Infrastructure billed directly to the service, Shared infrastructure cost to allocate (optional), This service's share of the allocation driver (optional), Total allocation driver across all services (optional), Units the service delivered (optional), Price as of (optional), Price source (optional).
Edge handling: Infrastructure billed directly to the service is required.; Infrastructure billed directly to the service cannot be negative.; Infrastructure billed directly to the service must be no more than 1000000000000.; Shared infrastructure cost to allocate (optional) is required.; Shared infrastructure cost to allocate (optional) cannot be negative..
Worked example
A service with direct spend plus a share of shared platform cost
- Start with Currency: USD, Infrastructure billed directly to the service: 18400, Shared infrastructure cost to allocate (optional): 42000, This service's share of the allocation driver (optional): 1300, Total allocation driver across all services (optional): 9800, Units the service delivered (optional): 0.
- Apply the method: Service cost = Direct cost + Shared cost × (Service driver / Total driver); Cost per unit = Service cost / Units delivered.
- Shared cost is split by the driver you chose and entered, never by a default rule.
Reading the result
The headline figure is the main answer. Any breakdown underneath shows the parts that make it up, so you can check the working and see what changes when you adjust an input.
Limitations and assumptions
- Inputs outside the supported range are rejected rather than forced into a result.
- The result depends on the values you enter for this infrastructure cost per service calculator; it does not supply missing rates, rules, prices, dates, or assumptions for you.
Reference: The Linux Foundation — Unit economics — FinOps Framework
Last reviewed:
Common questions
Where does this formula come from?
FinOps Framework capability: unit economics — cost per business unit is total cost for a period divided by the units delivered in the same period; shared cost is attributed in proportion to an agreed allocation driver. See the source link on this page.
What kind of calculation is this?
Directly billed cost plus a share of shared cost apportioned by the driver the user chose. Check the formula, example, and limitations on this page before using the result for a real professional & industry decision.
What are its limits?
Arithmetic over the figures entered — it cannot tell whether the underlying monitoring, incident records or change records are complete. A mean over a short period, or over few events, is a weak description of behaviour. The result is only as current as the rates entered; a rate taken months ago is not a current cost. The result is only as good as the driver chosen; a driver unrelated to consumption will misallocate cost.
How do I use the Infrastructure Cost per Service Calculator?
Enter the required values for Currency, Infrastructure billed directly to the service, Shared infrastructure cost to allocate (optional), This service's share of the allocation driver (optional), Total allocation driver across all services (optional), and the other fields shown. The calculator applies the formula on this page and shows the main result with any supporting breakdown so you can check the arithmetic.
What formula does the Infrastructure Cost per Service Calculator use?
Service cost = Direct cost + Shared cost × (Service driver / Total driver); Cost per unit = Service cost / Units delivered The visible formula section above lists the calculation path and the edge cases the page handles, so the result can be checked without relying on the form alone. Check the formula, example, and limitations on this page before using the result for a real professional & industry decision.
Can the Infrastructure Cost per Service Calculator be used for exact decisions?
Use it as a calculation aid, not as a substitute for checking the underlying rule, contract, policy, or professional advice that applies to your situation. When a result depends on local rules, personal details, prices, or dates, enter those values yourself and confirm them before acting.
Formula, source and verification
Directly billed cost plus a share of shared cost apportioned by the driver the user chose.
The question it answers: What did that incident cost, what does this service cost to run, and what does one deployment cost us?
The formula
Service cost = Direct cost + Shared cost × (Service driver / Total driver); Cost per unit = Service cost / Units delivered
- Cd — Direct cost
- (currency). Infrastructure billed directly to the service.
- Cs — Shared cost
- (currency). Shared platform cost to allocate.
- ds — Service driver
- (count). This service's share of the allocation driver.
- dt — Total driver
- (count). The same measure across all services.
- u — Units delivered
- (count). Requests, transactions or customers, if a unit cost is wanted.
Units: The currency the user selects; counts for the driver and units.
What kind of calculation this is
Business input model. The answer depends on business figures only you can supply, such as your own costs, rates or volumes. No market or benchmark values are assumed for you.
Method
Allocation and unit economics in the FinOps Framework sense. The allocation driver is chosen and entered by the user; no default split, equal share or headcount rule is applied.
Assumptions built into the result
- Mathematical: Direct and shared costs cover the same period.
- Mathematical: The driver measures consumption of the shared cost being allocated.
Figures this calculator will never guess for you
- No target, benchmark, industry average or performance band is supplied for any figure.
- A definition is never presented as a goal: the availability formula is not an availability target, and the change failure rate formula is not an acceptable failure rate.
- No labour rate, tooling price or revenue figure is built in; every amount is entered by the user.
- No default allocation rule, such as an equal split or a split by headcount, is applied.
Limitations
- Arithmetic over the figures entered — it cannot tell whether the underlying monitoring, incident records or change records are complete.
- A mean over a short period, or over few events, is a weak description of behaviour.
- The result is only as current as the rates entered; a rate taken months ago is not a current cost.
- The result is only as good as the driver chosen; a driver unrelated to consumption will misallocate cost.
Source and version
- Standard or reference
- FinOps Framework — unit economics — FinOps Foundation (FinOps Framework capability: unit economics — cost per business unit is total cost for a period divided by the units delivered in the same period; shared cost is attributed in proportion to an agreed allocation driver.)
- Published source
- The Linux Foundation — FinOps Framework
- Formula version
- Version 1
- Verification
- Reviewed against the cited source on
- How much weight the source carries
- Standards or government
- Applies to
- Currency
- Amounts stay in the currency you choose; no exchange rate is applied.
Related tools
Work out the hourly rate to charge a client so that target margin is met after overhead and non-billable time.
Find the true hourly cost of an employee once benefits, payroll cost and overhead are included.
Size a software application from its data and transaction functions before estimating effort or cost.
Estimate development effort, schedule and average team size for a software project of a known size.
Express cloud spend as a cost per customer, per transaction or per other business unit.
Set the rate used to apply manufacturing overhead to jobs for the coming period.