Network Calc Propagation Delay Calculator

Use this endpoint when you need precise, physics-based propagation delay estimates for network planning, latency budgeting, or SLA validation. Ideal when you have a known cable distance or geographic coordinates and want one-way/RTT figures broken down by transmission medium. Prefer this over generic ping tools or traceroute when you need theoretical minimums or want to model specific media types (fiber vs copper vs radio).

• Missing both distanceKm and coordinate pairs — returns error requesting one or the other
• Invalid medium value outside enum (fiber/copper/vacuum/air) — validation error
• Route factor outside 1-3 range — may be rejected or produce unrealistic results
• Coordinates out of valid lat/lon range — returns validation error
• linkMbps provided without packetBytes may return partial serialization result using default 1500-byte packet