What Are Nixie Tubes?
Nixie tubes are cold-cathode neon-gas discharge tubes that display numerals using wire-form cathodes shaped like digits 0–9. Invented in the 1950s and popular through the 1970s, they were used in early computers, test equipment, and clocks before being replaced by LEDs and LCD displays. Today, nixie tube clocks are prized by hobbyists and collectors worldwide.
Our digital clock page offers a modern take, but nothing beats the warm amber glow of a nixie tube. If you love retro timekeeping, also explore our grandfather clock with its authentic pendulum animation. For everyday use, our world clocks page shows time in every timezone, while the alarm clock wakes you up in style.
Nixie tubes require high voltage (typically 170V DC) to operate, making them simultaneously fascinating and slightly dangerous to build. Modern reproduction nixie tubes are still manufactured in Russia and the Czech Republic, keeping the technology alive for enthusiasts who love the warm glow of analog-era displays. Many people pair nixie clocks with our online stopwatch for precise time measurement.