ABC Analysis Calculator
This ABC analysis calculator sorts your items by value, works out cumulative shares and classifies them into A, B and C: paste items with their values and read off the result.
Source: Wikipedia – ABC-Analyse (classification by value share, usual benchmarks 80/15/5). Updated: .
How it is calculated
In the example list, 3 of 10 items (30 %) make up about 85 % of the total value: these are the A items. ABC analysis separates the important from the less important by classifying items by their share of value.
How it is calculated
First all items are sorted by value in descending order. Then the calculator works out each item's share of the total and the running total. The items that together reach the A limit (usually 80 %) form class A, those up to the B limit (usually 95 %) class B, and the rest class C. This follows the Pareto principle: a small part of the items produces most of the value.
What the classification is for
- Inventory and purchasing: control A items tightly, reorder C items simply.
- Sales: classify customers by revenue and spread effort accordingly.
- Costs: find the spending lines where savings matter most.
Frequently asked questions
What is an ABC analysis?
A method of classifying items such as products or customers by their share of value into class A (very important), B (medium) and C (less important).
How do you do an ABC analysis?
Sort by value in descending order, form shares and cumulative shares and set the class boundaries at limits such as 80 % and 95 %. The calculator does this from your list.
What limits are usual?
Often 80 / 15 / 5: A up to 80 % of value, B up to 95 %, C the rest. You can change them in the calculator.
How do I enter the data?
One line per item, name and value separated by a semicolon. Numbers with a point or comma work; a line with only a number gets numbered.
Sources and legal basis
- Wikipedia – ABC-Analyse (classification by value share, usual benchmarks 80/15/5)
- Wikipedia – ABC analysis
- Wikipedia – Pareto principle
As of: · Editorial policy
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