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Morse Code Keyer Simulator

Light and Keying · Visual Morse laboratory

Morse Code Keyer Simulator

Simulate straight-key and iambic paddle operation with accurate element scheduling, sidetone, mode A or B behavior and a live event timeline.

Independent calculatorBrowser-local processingLive visual output
Primary intentmorse code keyer
MethodLight and Keying
ExampleAt 20 WPM the keyer schedules 60 ms dots and…
PrivacyRuns in your browser
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Quick answer

Use the visual calculator

Simulate straight-key and iambic paddle operation with accurate element scheduling, sidetone, mode A or B behavior and a live event timeline.

Worked example: At 20 WPM the keyer schedules 60 ms dots and approximately 180 ms dashes before weighting adjustment.

Calculator at a glance

InputsKeyer mode, WPM and weighting, Sidetone
OutputsLive keying timeline, Generated Morse, Decoded characters
VisualPaddles
1

Morse Code Keyer Simulator

Adjust the method-specific controls and inspect both the calculated result and the synchronized visual.

1

Enter settings

These controls belong specifically to this calculator.

2

Live visual

The diagram, signal, chart or interactive surface updates with the calculation.

3

Calculated result

Copy the exact output or print the completed result.

Enter values and run this calculator.
2

How this visual Morse calculator works

The page separates input, transformation and verification so the result remains understandable.

1. Enter

Keyer mode is supplied using the calculator-specific controls.

2. Normalize

The browser validates symbols, timing values, separators, files or device permissions required by this method.

3. Calculate

An electronic keyer schedules dots and dashes from the selected WPM. Iambic modes alternate elements while both paddles are held; mode B adds the opposite trailing element when both paddles are released during an element.

4. Visualize

The paddles display reveals the signal structure instead of presenting only a text answer.

5. Verify

Compare the mapping, timing units, decoded characters, measured pulses or design dimensions shown in the result.

3

Method, timing and worked example

The calculation follows the rule appropriate to this individual tool.

Method used
An electronic keyer schedules dots and dashes from the selected WPM. Iambic modes alternate elements while both paddles are held; mode B adds the opposite trailing element when both paddles are released during an element.

Worked example

At 20 WPM the keyer schedules 60 ms dots and approximately 180 ms dashes before weighting adjustment.

Change the inputs to reproduce or extend the example
Standard timing reference: At ordinary International Morse timing, a dot lasts one unit, a dash three units, the gap inside a character one unit, the gap between characters three units and the gap between words seven units. The WPM tools use the PARIS timing convention, while Farnsworth mode lengthens spacing without slowing individual dots and dashes.
4

Inputs, outputs and result interpretation

Review what the tool accepts, what it returns and where caution is required.

Inputs used

Keyer mode
WPM and weighting
Sidetone

Outputs produced

Live keying timeline
Generated Morse
Decoded characters

What this calculator does well

Straight and iambic modes
Accurate scheduler
Paddle keyboard shortcuts

Important limitations

Browser event timing is suitable for practice but not a substitute for dedicated contest hardware.

For camera, microphone, audio and image analysis, signal quality and browser support affect the result. Treat uncertain output as a candidate interpretation and verify it against the source.

5

Morse Code Keyer Simulator questions

Answers to common questions about the calculation and visual result.

What does the Morse Code Keyer Simulator calculate?
Simulate straight-key and iambic paddle operation with accurate element scheduling, sidetone, mode A or B behavior and a live event timeline.
Which Morse standard does this tool use?
The calculator uses International Morse code for supported letters, digits, punctuation and common procedural signals. Timing follows the standard one-unit dot, three-unit dash, one-unit element gap, three-unit letter gap and seven-unit word gap unless a dedicated timing control changes spacing.
How should I read the visual result?
Dots appear as short circular or short-duration marks, while dashes appear as longer bars or pulses. The live visual is synchronized with the text result so each transformation can be inspected instead of accepted as an unexplained answer.
Does this calculator upload my message or recording?
Calculations run in the browser. Camera, microphone, audio and image tools process the selected stream or file locally in the page; the plugin does not send those inputs to a calculation server.
What can affect accuracy?
Browser event timing is suitable for practice but not a substitute for dedicated contest hardware.
Can I use the result for practice or design?
Yes. Copy and print controls are included, and tools that create reusable audio, vector, image or stencil output provide a download control. Verify any safety-critical or permanent design before relying on it.
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