Hedy Lamarr Measurements: Height, Build and Legacy

Hedy Lamarr is reported to have stood about 5 ft 7 in (170 cm) tall, with a slender build typical of Hollywood’s Golden Age leading ladies; her exact weight was never a matter of public record. More than six decades after her peak, she is remembered just as much for the mind behind the face.

Quick facts

Look and image

Studio publicity at MGM built Lamarr’s reputation as “the most beautiful woman in the world,” a label she famously found limiting. Her dark hair, center part and poised screen presence became a template for the era. Beyond studio claims, there is no reliable source for precise figures, and her legacy is better served by what she did than by numbers.

Early life in Vienna

Born into a well-off family, she showed an early interest in film and technology. As a teenager she began acting in European productions. Her 1933 Czech film Ecstasy drew international attention and controversy, and her first marriage to an Austrian industrialist exposed her to conversations about military technology.

Hollywood arrival

She left Europe in the late 1930s, met studio head Louis B. Mayer and signed with MGM. Her American debut came in Algiers (1938), opposite Charles Boyer, and it made her a star. Films followed, including Boom Town, Ziegfeld Girl and White Cargo. Her most successful picture was Samson and Delilah (1949) for Cecil B. DeMille. She also worked as a producer on a few projects, which was unusual for the period.

The inventor

During World War II, Lamarr collaborated with composer George Antheil on a “secret communication system” using frequency hopping, designed to make radio-guided torpedoes harder to jam. The two received a patent in 1942. The Navy did not adopt it at the time, but the underlying idea is often compared to technologies later used in spread-spectrum communications, which underpin aspects of modern wireless systems. Credit for the invention grew over time, and she was honored with a Pioneer Award and later inducted into the National Inventors Hall of Fame in 2014.

Later years

Her film career faded in the 1950s, and she spent later decades largely out of the public eye. She was married six times. She died in January 2000 at age 85 in Florida. A star on the Hollywood Walk of Fame recognizes her film work.

Why she still matters

Lamarr’s story is frequently used as a counterpoint to the stereotype of the glamorous actress with no ideas of her own. Documentaries, books and tributes have kept her name in circulation, including a Google Doodle on her birthday and a recurring role in conversations about women in science.

Beyond the headlines

Part of what keeps Lamarr’s story alive is how often it’s been retold with the wrong emphasis. Early accounts focused almost entirely on her face, while more recent ones sometimes swing the other way and treat the patent as the only thing that matters. The reality is more interesting: she was a working movie star with a genuine technical hobby. She tinkered with inventions in her spare time, a habit that sat oddly with her glamorous public image.

Frequency hopping, plainly explained

The idea behind the 1942 patent was simple to state. If a transmitter and receiver jump between radio frequencies in a matching pattern, an enemy can’t easily jam the signal. Lamarr and Antheil proposed synchronizing the jumps using a mechanism inspired by player-piano rolls, which is where Antheil’s musical background came in. The Navy didn’t use it during the war, and the patent later expired. Modern engineers point to the broader concept of spread spectrum, not Lamarr’s exact device, as the link to today’s wireless technology, and that’s the fairest way to describe her contribution.

What fans ask

People often ask whether she really invented Wi-Fi. She didn’t, strictly speaking, but her work is part of the intellectual history of the field. They also ask about her height and figure, which is why this page exists: the reported 5 ft 7 in is the only widely cited number, and it comes from period sources rather than precise records. Last, people ask where to start with her films. Algiers is the obvious entry point, and Samson and Delilah shows her at the height of her studio fame.

Frequently asked questions