How to use this calculator
- Enter consumption, gross investment, government purchases, exports, imports.
- Choose a display currency, then select Calculate. Results also update after a brief pause while you edit.
- Read the result with the assumptions below. Export details or save a second scenario to compare your choices.
Formula and method
Assumptions and limitations
Use consistent national-account definitions, units and periods; transfers are not government purchases.
Worked example
With consumption = 600, gross investment = 200, government purchases = 250, exports = 100, imports = 150, gdp is approximately 1000.
What the result means
Imports are removed to avoid counting foreign production embedded in expenditure.
Common questions
How should I interpret gdp?
Imports are removed to avoid counting foreign production embedded in expenditure.
What should I check before using this result?
Use consistent national-account definitions, units and periods; transfers are not government purchases.
Methodology and transparency
Calculation specification reviewed on 2026-10-14. Mathematical implementation is tested against independent reference fixtures. This does not imply review by a licensed financial professional. Read the testing and precision policy.
Background reference: www.bea.gov — financial method. FinanceMath implements its own calculator.