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Cronbach’s alpha

Internal consistency of a scale from item scores, with alpha if each item were deleted and corrected item-total correlations.

One row per person, one column per item, separated by spaces, commas or tabs. Paste straight from Excel or SPSS. A first row of item names is fine.

Item numbers, e.g. 2, 5, 7. They are reversed before anything is calculated.

Needed only for reversing.

Nothing you enter is stored or sent anywhere. The calculation runs for this request and is then gone.

Before you use this

Fill in the form and the result appears here, along with every intermediate value and a note on what the number does not mean.

These calculators run on the server with a plain form post, so they work with JavaScript disabled and nothing is sent to a third party.

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