off the top of one's head

Prepositional phrase

 * 1)  In an extemporaneous manner; without careful thought, preparation, or investigation.

Usage notes

 * Usually used to characterize the manner of one's thinking or speaking.
 * Often indicates a random piece of information put forth by a knowledgeable expert in the topic spoken within.

Translations

 * Czech:, , (takhle) z fleku
 * Finnish:, suoralta kädeltä, ,
 * French:, ,
 * German: aus dem Stegreif
 * Hungarian:
 * Norwegian:
 * Nynorsk: på ståande fot, på strak arm
 * Polish: z głowy, bez zastanowienia ,
 * Portuguese: de cabeça
 * Russian: ,
 * Spanish: a bote pronto
 * Swedish: ,