It'a REALTIME ONLINE calculator!
Out targets are Hardware, pcb, system engineer
You may use metric Prefixies(like k, m,u,n,p,...).
This is a calculator for the propagation speed of radio waves on a substrate. The higher the dielectric constant, the lower the propagation speed.
Substrates with a low dielectric constant have the advantage of low propagation delay for high-speed signals (such as 5G and millimeter wave). 
PCB relative permittivity
er
➧
Propagetion speed
ps/mm
Propagetion speed
mm/ps
This is a easy calculation and no guarantee is given for the calculation results.
2020 Engeneer Calculator project.
2020 Engeneer Calculator project. All right reserve.
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