You are currently converting frequency units from petahertz to millisecond(period)
1 PHz = 1.0⋅10-12 ms(p)
Conversion base :
1 PHz = 1.0E-12 ms(p)
Conversion base :
1 ms(p) = 1.0E-12 PHz
Conversion base :
1 PHz = 1.0E-12 ms(p)
1 ms(p) = 1.0E-12 PHz
Period
The period is not the same dimension than the frequency. The frequency (f) is the reciprocal of the period (T) : f = 1/T
We have merged period and frequency here to allow easy conversions between both dimensions.