ClaudeLight Index Factor
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Index Factor Calculator
Commodities
Frequency
Monthly
Quarterly
Half-yearly
Annually
Financial Year Series
January – December
February – January
March – February
April – March
May – April
June – May
July – June
August – July
September – August
October – September
November – October
December – November
Defines which month starts the financial year.
Assessment Month
January
February
March
April
May
June
July
August
September
October
November
December
Assessment Year
2026
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
Overlap period preference
(Apr 2012 – Mar 2017)
2011‑12 series
2004‑05 series
For periods where both series have data, which drives the composite index.
Show Index Values
Show Extrapolated Value
Show Back-interpolated Values
(to 1920)
Beginning Month
January
February
March
April
May
June
July
August
September
October
November
December
Beginning Year
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016
2015
2014
2013
2012
Latest available: Feb 2026. Will extrapolate up to the selected assessment period.
Calculate
View calculation history
Select commodities and an assessment date, then click Calculate.
Index Factor = Assessment Date Index ÷ Index of the Period