Examples
Examples
Try the starting example
- Base contract unit price ($)
- 100
- Variable indices: name, price weight %, base index, current supplied index
- A,50,100,110 B,30,100,90
- Maximum permitted price increase (%)
- 5
- Maximum permitted price decrease (%)
- 5
- Unindexed fixed price share (%)
- 20
- Uncapped index-driven price change (%)
- 2
- Change after entered cap/floor (%)
- 2
- Adjusted unit price ($)
- $102.00
- Adjusted minus base unit price ($)
- $2.00
Try another scenario
- Base contract unit price ($)
- 100
- Variable indices: name, price weight %, base index, current supplied index
- A,50,100,130 B,30,100,90
- Maximum permitted price increase (%)
- 5
- Maximum permitted price decrease (%)
- 5
- Unindexed fixed price share (%)
- 20
- Uncapped index-driven price change (%)
- 12
- Change after entered cap/floor (%)
- 5
- Adjusted unit price ($)
- $105.00
- Adjusted minus base unit price ($)
- $5.00
Calculation method
Calculation method
Unindexed fixed price share (%)
100−sum supplied variable index weights.
Uncapped index-driven price change (%)
Fixed share+sum(weight×current/base index)−1, expressed as percent.
Change after entered cap/floor (%)
Clamp the exact rational index factor to the entered permitted decrease/increase.
Adjusted unit price ($)
Round base price×clamped factor half-up to US cents.
Adjusted minus base unit price ($)
Adjusted cent price−base cent price.
Symbols and units
- a
- Base contract unit price ($)
- b
- Variable indices: name, price weight %, base index, current supplied index
- c
- Maximum permitted price increase (%)
- d
- Maximum permitted price decrease (%)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Calculation steps and notation
sum(list) adds all entries in the list.
Assumptions & limits
Assumptions & limits
- An explicit weighted-index contract illustration. Index values, weights and caps are supplied; no live index, legal escalation clause or permitted price is inferred.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
Background reading; this does not imply endorsement or independent review of SumFizz.