Cap Rate Calculator
This capitalization rate (cap rate) calculator provides three common workflows: compute cap rate from NOI and price, compute implied NOI from cap rate and price, and compute implied price from NOI and cap rate. Use the method that matches the value you know and the value you need.
The tool accepts direct NOI input or allows you to derive NOI from gross income, vacancy rate, and operating expenses. Results are displayed with clear units and formats and include accuracy and data-handling guidance.
Governance
Record dafd47c0523d • Reviewed by Fidamen Standards Committee
Calculate capitalization rate as Net Operating Income divided by purchase price. Result shown as a percentage.
Inputs
Advanced inputs
Enter NOI
Calculate NOI from income & expenses
Results
Cap rate (%)
5.00%
| Output | Value | Unit |
|---|---|---|
| Cap rate (%) | 5.00% | — |
Visualization
Methodology
Cap rate is a simple ratio used to compare income-producing properties. For consistency this calculator treats cap rate as annual NOI divided by property price or value.
When deriving NOI from gross income: NOI = Gross scheduled income × (1 − vacancy rate) − operating expenses. Vacancy and expense inputs should be annualized and reflect stabilized operating levels.
Inputs are plain numeric values. Cap rate inputs are entered as percentages (for example, enter 5 for 5%). Internally the tool converts percentages to decimals when required (divide by 100).
Key takeaways
Use the cap rate calculation to compare similar properties and to sanity-check valuation or underwriting assumptions.
Remember that cap rate is only one metric: it excludes financing structure, tax effects, and one-time items. For investment decisions combine cap rate analysis with cash flow, ROI, and risk assessments.
Worked examples
If annual NOI is 60,000 and property price is 1,200,000 then cap rate = 60,000 ÷ 1,200,000 = 0.05 → 5.00%.
If a market cap rate is 6% and a property price is 2,000,000 then implied NOI = 0.06 × 2,000,000 = 120,000.
F.A.Q.
Should I enter cap rate as a decimal or percent?
Enter cap rate as a percentage (for example, enter 5 for 5%). The calculator converts that percentage into a decimal internally where needed.
Can this tool calculate NOI from rent and expenses?
Yes. Select the option to calculate NOI and provide annual gross scheduled income, vacancy rate, and operating expenses. NOI will be estimated as: gross income × (1 − vacancy) − operating expenses.
How precise are the results?
Results follow standard numeric precision practices for financial calculators. Small rounding differences may occur; for regulatory or contractual use, round according to your reporting rules and confirm with primary financial records.
How should I treat non-recurring items or capital expenditures?
This calculator treats NOI as recurring operating income less recurring operating expenses. Exclude non-recurring items and treat capital expenditures separately unless you intentionally include them in operating expenses.
What are the limits and caveats of this tool?
The calculator provides indicative results only. It does not substitute for professional appraisal, due diligence, or legal advice. Confirm all inputs against source documents and apply local regulatory or accounting standards when necessary.
How is data handled and secured?
Implementations of this calculator should follow established data security and privacy standards. See the citations for general guidance on technical and organizational controls.
Sources & citations
- National Institute of Standards and Technology (NIST) — https://www.nist.gov
- International Organization for Standardization (ISO) — https://www.iso.org
- IEEE Standards Association — https://standards.ieee.org
- Occupational Safety and Health Administration (OSHA) — https://www.osha.gov
- HUD — Multifamily Underwriting Guidelines — https://www.hud.gov/program_offices/housing/mfh
- Appraisal Institute — Income Capitalization Approach — https://www.appraisalinstitute.org/
Further resources
Versioning & Change Control
Audit record (versions, QA runs, reviewer sign-off, and evidence).
Record ID: dafd47c0523dWhat changed (latest)
v1.0.0 • 2025-11-15 • MINOR
Initial publication and governance baseline.
Why: Published with reviewed formulas, unit definitions, and UX controls.
Public QA status
PASS — golden 25 + edge 120
Last run: 2026-01-23 • Run: golden-edge-2026-01-23
Versioning & Change Control
Audit record (versions, QA runs, reviewer sign-off, and evidence).
What changed (latest)
v1.0.0 • 2025-11-15 • MINOR
Initial publication and governance baseline.
Why: Published with reviewed formulas, unit definitions, and UX controls.
Public QA status
PASS — golden 25 + edge 120
Last run: 2026-01-23 • Run: golden-edge-2026-01-23
Engine
v1.0.0
Data
Baseline (no external datasets)
Content
v1.0.0
UI
v1.0.0
Governance
Last updated: Nov 15, 2025
Reviewed by: Fidamen Standards Committee (Review board)
Credentials: Internal QA
Risk level: low
Reviewer profile (entity)
Fidamen Standards Committee
Review board
Internal QA
Entity ID: https://fidamen.com/reviewers/fidamen-standards-committee#person
Semantic versioning
- MAJOR: Calculation outputs can change for the same inputs (formula, rounding policy, assumptions).
- MINOR: New features or fields that do not change existing outputs for the same inputs.
- PATCH: Bug fixes, copy edits, or accessibility changes that do not change intended outputs except for previously incorrect cases.
Review protocol
- Verify formulas and unit definitions against primary standards or datasets.
- Run golden-case regression suite and edge-case suite.
- Record reviewer sign-off with credentials and scope.
- Document assumptions, limitations, and jurisdiction applicability.
Assumptions & limitations
- Uses exact unit definitions from the Fidamen conversion library.
- Internal calculations use double precision; display rounding follows the unit's configured decimal places.
- Not a substitute for calibrated instruments in regulated contexts.
- Jurisdiction-specific rules may require official guidance.
Change log
v1.0.0 • 2025-11-15 • MINOR
Initial publication and governance baseline.
Why: Published with reviewed formulas, unit definitions, and UX controls.
Areas: engine, content, ui • Reviewer: Fidamen Standards Committee • Entry ID: 0302865ba2c4