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The number 13: superstition explained

What people believe, where it comes from and what is really going on.

The belief

In some countries many buildings skip the 13th floor, and hotels may skip room 13. People may avoid sitting at a table of thirteen.

Where it comes from

The fear of the number, triskaidekaphobia, is linked with the Last Supper and with a Norse myth of a thirteenth guest, Loki, who caused the death of the god Baldr. Twelve is seen as a complete number (12 months, 12 hours, 12 apostles) and 13 as one too many.

What is really going on

Many buildings simply label the 13th floor 14. The fear is real for some people, who can feel anxious; it can be eased by a rational look at the evidence.

See also

Questions people ask

What is the superstition about the number 13?

In some countries many buildings skip the 13th floor, and hotels may skip room 13. People may avoid sitting at a table of thirteen.

Is it true?

There is no evidence that it affects events; it is a cultural belief.

This page reports popular beliefs for interest. Superstitions do not predict or cause anything, and nothing here is advice.