Hütter was born on 20 August 1946 in Krefeld, Germany. In 2009 he lived near Düsseldorf. Hütter also has a daughter named Elsa who also produces music.
He met Florian Schneider while studying improvisation at the Robert Schumann Hochschule. He is a vegetarian. Hütter is a secretive musician who avoids interviews.
Ralf Hütter is an enthusiastic cycling fan, a fact reflected in some of the band's work. It was widely claimed that, when he was on tour, the group's bus would drop off Hütter 100 miles away from the next venue and he would cycle the rest of the way, a story that Hütter later confirmed. The band members took up cycling when recording the album The Man-Machine in the late 1970s. Ralf Hütter had been looking for a new form of exercise. The single "Tour de France" includes sounds that follow this theme, including bicycle chains, gear mechanisms and the breathing of the cyclist. At the time of the single's release Ralf Hütter tried to persuade the rest of the band that they should record a whole album based around cycling. At the time this did not happen, but the project eventually was released as Tour de France Soundtracks in 2003.

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