PARIS timing with real Farnsworth math
Standard dot/dash/intra/letter/word timing is shown alongside effective spacing speed and the exact PARIS reference duration. Effective WPM cannot exceed character WPM.
International Morse boundary
WebToolArc follows ITU-R M.1677-1 for the International Morse alphabet and the 1-dot / 3-dot / 7-dot spacing relationships. Common extensions are labeled separately, and learning-oriented Farnsworth spacing changes gaps without changing dit/dah character speed.