Russian ruble inflation calculator

Choose the amount and comparison years

Enter the amount in rubles of the selected starting year, then choose the destination year. The result estimates the amount in the destination year's rubles that would purchase a comparable national consumer basket. It does not value a bank deposit, a home, a security or a particular shopping list.

For completed years, the calculator compares December price levels. A comparison from 2020 to 2025 therefore means December 2020 to December 2025, not the average purchasing power of every transaction made during those years. The endpoint labels make that convention explicit.

Annual inflation is compounded, not added

The historical source is Rosstat consumer-price inflation measured in December against the preceding December. The tool turns each percentage into a multiplier: an inflation rate of r percent becomes 1 + r/100. It multiplies the intervening annual factors to compare two December price levels.

The starting year's own annual change is not applied again. It is already included in that year's December price level. For a reverse comparison, the tool divides by the same cumulative factor. Adding inflation percentages would give the wrong answer because each year's price movement applies to the price level reached in the preceding year.

For illustration only, two successive hypothetical increases of 10 percent produce a cumulative increase of 21 percent, not 20 percent. This example explains compounding; it is not a claim about observed Russian inflation in any specified period.

How the 1998 redenomination is handled

From January 1, 1998, 1,000 old rubles became one new ruble. Enter a pre-1998 amount using the old rubles printed or recorded in that year. The calculator first expresses it in a common post-redenomination unit, performs the price-level comparison, and then converts the result into the currency units of the selected destination year.

Crossing forward from before 1998 requires division by 1,000 for the denomination change; crossing backward requires multiplication by 1,000. The inflation factor is separate. Removing zeros did not itself make goods cheaper in purchasing-power terms, and the conversion must not be mistaken for a sudden fall in the consumer-price index.

The same rule applies when both selected years are before the change: the normalization cancels out, leaving a comparison expressed in the old units. For context, see Russia's inflation history and the Russian ruble explained.

The 2026 endpoint is a partial year

For the research cutoff of October 16, 2026, the current-year endpoint is September 2026, the latest completed month supported in this package. Rosstat's September release gives the index against December 2025 as 105.04, equivalent to a price factor of 1.0504. The calculator combines that factor with the completed annual series and labels the endpoint September 2026.

Year-over-year inflation is not interchangeable with this input. September against the preceding September measures a different interval. The tool must not insert that rate as though it measured prices since December. If a future monthly endpoint lacks a verified December-based index, it should remain unavailable rather than be estimated from an unrelated series.

What the result cannot tell you

National CPI weights do not reproduce every household's spending. Regional prices, housing arrangements, transport use, food preferences and the timing of purchases differ. Product replacement and methodological changes also affect very long comparisons, especially across the economic transition of the 1990s.

The figure is an informational purchasing-power comparison under stated assumptions, not a personal inflation estimate or financial recommendation. Calculator entries stay in the browser and are not stored or sent. For a comparison of inflation with output, wages and interest rates, read how Russia's economy works.