How to use this calculator
- Enter original amount, starting price index, ending price index.
- 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
Equivalent amount = original amount × ending index / starting index.
Assumptions and limitations
Use the same index series, base, geography and frequency. Values are entered by you; no official dataset is bundled.
Worked example
With original amount = 1000, starting price index = 100, ending price index = 125, equivalent ending amount is approximately 1250.
What the result means
The same basket would cost the adjusted amount under the entered index change.
Common questions
How should I interpret equivalent ending amount?
The same basket would cost the adjusted amount under the entered index change.
What should I check before using this result?
Use the same index series, base, geography and frequency. Values are entered by you; no official dataset is bundled.
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.