Practical tools for measured work
Inflation and present value calculator
Adjust an amount using entered price indices or a constant annual growth or discount rate.
Calculate the layout, check the diagram, then print the result for the shop or jobsite.
How it works
Index adjustment = amount × target-period index/source-period index. Use the same index series and base for both periods. For example, 100 at index 200 corresponds to 125 at index 250. For a constant-rate scenario, multiply by (1 + rate)^years, or divide to discount.
Current-input example
The result above uses these exact values. This snapshot is included when the page is printed so the output can be checked against the original measurements.
- Value adjustment method
- Entered price index ratio
- Amount to adjust
- 100
- Price index in source period
- 200
- Price index in target period
- 250
Primary result: Equivalent target-period amount: 125.00.
Before using the result
- Check the selected mode, units and input values before using the result.
- Read the assumptions and rounding rules; compare the worked example with your intended calculation.
- A numerical result does not supply missing context or change the stated limitations.
Limitations
No current price-index data is fetched. Record the series, geography and dates of the values you enter. A general consumer-price index does not value a specific asset, collectible or home. The rate scenario is an assumption, not measured historical inflation or an investment forecast.
Frequently asked questions
What should I verify before using this result?
Check the input values, units, dates and assumptions. Compare the method and its stated limits with the source relevant to your task.
Why might the finished result differ?
Results depend on the entered data and the model’s assumptions. Rounding, changing conditions or omitted factors can affect the comparison. Read the limitations before using the result.
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