NZ inflation calculator (CPI)
Prices rise over time, so $1,000 a few years ago buys less today. This calculator brings an amount from one date to another using the consumers price index published by Stats NZ.
The CPI comes out every quarter. Pick any date and we use the quarter it falls in.
How it's calculated
- We take the CPI all groups index for the start quarter and the end quarter.
- The adjusted amount is the original amount multiplied by the end index and divided by the start index.
- If the end quarter isn't published yet, the calculation stops at the latest quarter available.
An example
$1,000 in the June 2025 quarter is worth $1,040.58 in June 2026 quarter prices. The CPI rose 4.1% over those 12 months.
Frequently asked questions
How often is the CPI published?
Every quarter. Stats NZ publishes the index for the March, June, September and December quarters.
What does the CPI measure?
The rate of price change of goods and services bought by New Zealand households.
Why is my result for the latest quarter and not today?
The CPI for the current quarter comes out after the quarter ends. Until then we use the latest quarter published.
Key terms
- CPI
- Consumers price index, the main measure of inflation in New Zealand.
- Quarter
- A three-month period. The June quarter is April to June.
The same calculation in other countries
United States (English)
United Kingdom
Canada (English)
Ireland
Australia
South Africa
Singapore
Hong Kong SAR China
Malaysia
Philippines
Kenya
Tanzania
Uganda
Cyprus (English)
Rwanda
Malta
Oman (English)
Malawi
Botswana
Barbados
Brunei
BhutanUp-to-date official data
Consumers price index (CPI), all groups, June 2017 quarter = 1000: updated , with the latest figure from Stats NZ.
We check the official sources automatically, every day.
See all sources