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GDP Deflator Calculator — result sheet
Calculate the implicit GDP deflator from nominal and real GDP while keeping the base-year index convention visible.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: GDP deflator = nominal GDP ÷ real GDP × 100; nominal-to-real ratio = nominal GDP ÷ real GDP.
The GDP deflator compares the value of output at current prices with the value of the same output at base-year prices. An index of 100 means the two entered values are equal under the chosen series and base; the calculator does not choose the statistical series or base year for the visitor.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Nominal GDP — currency units; minimum 1.0E-6; maximum 1000000000000000000
- Real GDP at base-year prices — currency units; minimum 1.0E-6; maximum 1000000000000000000
Worked example
| Input | Value |
|---|---|
| Nominal GDP | 23000 |
| Real GDP at base-year prices | 20000 |
GDP deflator = 115; nominal GDP is 1.15 times real GDP under the entered base-year convention.
Assumptions and limits
- Nominal and real GDP cover the same geography, period, and output definition.
- Both GDP values use the same currency scale before division.
- Real GDP is expressed at the stated base-year prices and is positive.
- A result above 100 indicates nominal GDP is larger than real GDP under these inputs.
- The tool does not estimate a household consumer-price inflation rate.
- The tool does not seasonally adjust, chain-link, or revise a national-accounts series.
- Taxes, subsidies, imports, quality change, and statistical revisions remain in the supplied data.
- The result is an arithmetic index and not a forecast of economic growth.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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