Every digit, every pattern, every shortcut — the complete numbers reference with audio, the staircase visualization and a 10-question quiz.
Click any digit to hear it. Hit Copy to grab the Morse, or jump to a dedicated section for that number.
Most charts list numbers as ten unrelated patterns. They’re not — they’re a staircase. From 1, each digit adds one dot from the left while removing one dash from the right. At 5 the pattern flips, and dashes rebuild left-to-right until 0 is all dashes. See it visually and the system becomes obvious.
Every Morse digit has a mirror twin: swap dots for dashes and you get its partner. You only need to memorize five patterns, not ten — the rest is symmetry.
..... (5, all dots) and ----- (0, all dashes). Once those are instant, the three remaining pairs (1↔9, 2↔8, 3↔7, 4↔6) drop into place because each pair is just a dot-count shift.Type any phone number or digit sequence to see and hear it in Morse code instantly. Click any digit card to play it individually.
Hear a random Morse number sequence and type what you decode. Adjustable length and speed.
Most tools only quiz one way. This one tests both encoding (digit → Morse) and decoding (Morse → digit). Use Prev/Next to navigate questions freely, or let it auto-advance.
0 dots · 5 dashes · Mirror of digit 5
All dashes — the longest digit. "Daaah-daaah-daaah-daaah-daaah."
7000 kHz = --··· ----- ----- -----W0ABC (0 district call sign)SOS 0071 dot · 4 dashes · Mirror of digit 9
One dot, then four dashes. The "leader" of the staircase.
100 = .---- ----- -----Grid square FN011st of January2 dots · 3 dashes · Mirror of digit 8
Two dots, three dashes — the "two-step" digit.
2024 = ..--- ----- ..--- ....-7.2 MHz22nd parallel3 dots · 2 dashes · Mirror of digit 7
Three dots then two dashes. Halfway to the all-dot end.
3.5 MHz (80 m band)March 3rdPi ≈ 3.141594 dots · 1 dash · Mirror of digit 6
Four dots, one dash — almost all dots.
14.000 MHz (20 m band)Channel 44th call district (CA, NV, AZ…)5 dots · 0 dashes · Mirror of digit 0
All dots — the fastest, shortest digit. The mirror of zero.
555 area code5 wpm = beginner speed5 NATO grid line4 dots · 1 dash · Mirror of digit 4
One dash, four dots. Mirror of 4.
6 m band (50 MHz)Grid FN606th call district3 dots · 2 dashes · Mirror of digit 3
Two dashes, three dots. Mirror of 3.
7.000 MHz (40 m band)007 (the iconic call)7th call district2 dots · 3 dashes · Mirror of digit 2
Three dashes, two dots. Mirror of 2.
88 = "love and kisses" in CW8 ball8 m wavelength1 dot · 4 dashes · Mirror of digit 1
Four dashes, one dot. Mirror of 1 — the "trailer" of the staircase.
9-1-1 = ----. .---- .----9th call district (MI, IL, IN, WI)99 problemsSamuel Morse and Alfred Vail’s original 1840s telegraph code — now called American Morse — encoded digits unevenly. Some digits had internal pauses, others used extra-long dashes ("long dash" worth six time units). It worked for skilled operators but was inconsistent across stations.
When the International Morse Code (later adopted by the ITU) was standardized in 1865 for the new continental telegraph lines, the numbers were rebuilt from scratch. Every digit became exactly five signals, a clean staircase from .---- to -----. This is the system we use today — on amateur radio, in aviation identifiers, in maritime distress calls, and in every modern Morse trainer.
The five-signal rule was a deliberate choice: letters use one to four signals, so the moment an operator hears a fifth element in a single character they know it’s a digit. That cognitive shortcut still saves time in fast CW copying today.
0 = ----- , 1 = .---- , 2 = ..--- , 3 = ...-- , 4 = ....- , 5 = ..... , 6 = -.... , 7 = --... , 8 = ---.. , 9 = ----. . Every digit uses exactly five signals.