A Morse code flashlight is a tool that converts text into light pulses—either using your phone's screen or the physical LED torch—to transmit messages in Morse code. Each letter is represented by a sequence of short flashes (dots) and long flashes (dashes), making it useful for emergency signaling, outdoor communication, or learning Morse code visually.

Torch mode uses your device's rear camera LED flashlight to blink Morse code signals. When you tap "Start Blinking," the tool requests camera permission to access the torch. The LED then pulses in precise dot/dash patterns. This works on most modern Android and iOS devices with a rear flash. If torch access is unavailable, the tool automatically falls back to screen flash mode.

For beginners or emergency use (like SOS), 5–8 WPM is recommended—it's slow enough to be clearly visible. For practice, 10–15 WPM is a comfortable range. Experienced operators can go up to 20–30 WPM. The default setting of 12 WPM balances clarity with reasonable speed. Remember: lower WPM means longer, more distinct flashes.

Yes! Once the page is loaded, all Morse code conversion and blinking happens entirely in your browser using JavaScript. No internet connection is needed for the core functionality. The torch API also works offline. This makes it reliable for outdoor adventures, hiking, or emergency situations where connectivity is limited.

In Morse code, a dot (·) is a short signal lasting 1 time unit, while a dash (−) is a long signal lasting 3 time units. For example, at 12 WPM, a dot flashes for about 100ms and a dash for about 300ms. The space between dots/dashes within a letter is 1 unit, between letters is 3 units, and between words is 7 units. This timing is what makes Morse code distinguishable.

SOS (··· −−− ···) is the most famous distress signal, but Morse code can transmit any emergency message. Other useful signals include HELP (···· · ·−·· ·−−·), MAYDAY (voice-origin but usable), and EMERGENCY. The key advantage of SOS is its unmistakable rhythmic pattern—three short, three long, three short—which is recognizable even by people who don't know Morse code.

Screen flash mode is the default because it works universally on all devices—desktops, tablets, and phones—without requiring any permissions. It turns your entire screen bright white for each signal pulse, which is highly visible in dark environments. If you specifically need the rear LED torch (brighter, directional beam), switch to Torch mode. The tool remembers your preference during the session.