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Economics

Consumer Price Index (CPI) Calculator

Economics

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Consumer Price Index (CPI)

Equation and meaning

\[CPI_{in\_any\_month} = \frac{cost_{of\_basket\_in\_that\_month}}{cost_{of\_the\_same\_basket\_in\_base\_period}} \cdot 100\]

Use this equation when the shown variables describe your problem. Keep all inputs in compatible units; the calculator converts them to SI internally before solving.

Variables in this formula

cost_of_basket_in_that_month — Cost Of Basket In That Month
Enter this value unless it is the selected unknown.
cost_of_the_same_basket_in_base_period — Cost Of The Same Basket In Base Period
Enter this value unless it is the selected unknown.
CPI_in_any_month — Cpi In Any Month
Enter this value unless it is the selected unknown.

How to use this calculator

  1. Leave one value emptyThe empty field is automatically treated as the unknown.
  2. Enter known values and unitsChoose N, kgf, dyn, SI or another compatible unit when available.
  3. Review the automatic answerThe result appears immediately and is substituted back into the formula to check the residual.
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Consumer Index

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\[CPI = ( ( ( ( ( Cost_of_basket_at_current_prices ) ) / ( ( Cost_of_basket_at_base_period_prices ) ) ) ) ) \cdot 100\]
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