Inputs
Enter values in the same currency. Leave anything blank if not used.
Results
- Expenditure GDP: —
- Production GDP: —
- Nominal GDP: —
- Real GDP: —
- GDP Deflator (%): —
Data Table
| Year | C | I | G | X | M | Nominal GDP | Deflator (%) | Real GDP |
|---|---|---|---|---|---|---|---|---|
| Totals | 0 | 0 | 0 | 0 | 0 | 0 | — | 0 |
GDP Chart
Compares nominal and real GDP across rows in the data table.
Formula used
Expenditure approach: GDP = C + I + G + (X − M)
Production/value‑added approach: GDP = Σ sector value added
Real vs nominal: GDPreal = GDPnominal / (Deflator / 100) and
Deflator = 100 × GDPnominal / GDPreal
Notes: The deflator is a broad price index for all domestically produced final goods and services. For year‑to‑year analysis, you may compute growth rates or use chain‑weighted indices.
How to use this calculator
- Enter values for the expenditure approach and click Calculate to get GDP.
- Optionally enter sector value added to cross‑check using the production method.
- Provide nominal GDP with either real GDP or a deflator to infer the missing one.
- Add the result to the table, load examples, and press Update Chart.
- Export the table as CSV or create a PDF report.
FAQs
Use a single currency for all inputs so the sums and ratios are meaningful. The chart and exports keep your raw numbers without conversion.
Yes. After adding multiple years, compute growth as
((GDP_t − GDP_{t−1}) / GDP_{t−1}) × 100 in a spreadsheet or extend this page with a new column.Then
(X − M) is negative and reduces GDP in the expenditure identity. That is normal for economies with persistent trade deficits.Measurement error timing differences and statistical discrepancy can cause gaps. National accounts often show a balancing item to reconcile the two.
No. Gross National Income adjusts GDP by adding net primary income from abroad. This tool focuses on GDP identities and deflators.
CPI measures consumer prices only while the deflator covers all final domestic output. If you lack deflator data CPI is a rough proxy but not exact.
Precision depends on your inputs. Values are arithmetic identities not forecasts. Always compare with official national accounts where available.