Documentation of data
- "Historical Monetary Statistics for Norway 1819–2003" (chapter 3 by Ola H. Grytten), Norges Bank's Occasional Paper No. 35, 2004.
- "Contributions to a history of prices in Norway: Monthly price indices, 1777-1920", by Jan Tore Klovland, Norges Bank Working Paper 2013/23.
- Figures before 1777 are based on Grytten, Ola H. (2014), "A Consumer Price Index for Norway 1516-2003", chapter 3 in Norges Bank's Occasional Paper No. 35, "Historical Monetary Statistics for Norway 1819–2003".
- Figures for 1777 - 1830 are based on Klovland, Jan T. (2013), "Contributions to a history of prices in Norway: Monthly price indices, 1777-1920". Norges Bank Working Paper 2013/23. Wholesale price index (WPI), see Table A1.
- Figures for 1830 - 1871 are based on Grytten, Ola H. (2014), "A Consumer Price Index for Norway 1516-2003", chapter 3 in Norges Bank's Occasional Paper No. 35, "Historical Monetary Statistics for Norway 1819–2003".
- Figures for 1871 - 1910 are based on Ellingsæter, Sverre (2007), "Konsum og priser i Norge 1871-1910", Master Thesis, Norwegian School of Economics.
- Figures for 1910 - 1920 are based on Grytten, Ola H. (2014), see above.
- Figures for 1920 - 1959 are aggregated from monthly data for Statistics Norway's cost of living index in Historical Statistics 1948 (table 184), 1968 (table 287).
- Figures from 1960 onwards are aggregated from Statistics Norway's monthly data for the consumer price index (CPI) in Historical Statistics 1968 (table 287), 1978 (table 289), Statistical Yearbooks 1981-1999 and Statistics Norway's online elecronic data source Statbank.
- Annual data for consumer price indices are available from 1516. The results may differ from those from other price calculators due to differences in numeric accuracy.