Takardunawa
Form Factor ya amsa da shi ne sukar addinin r.m.s (Root Mean Square) zuwa ma'adaddinnin kawalwali na birki mai yau (ko kula ko fassara). Ma'adaddin kawalwali na birki mai yau shine ma'adaddin jumla cikin kula ko fassara a cikin wata daga.
A halayyar limace, ya zama:

Ir.m.s da Er.m.s suna da sukar addinin r.m.s na kula da fassara, idan Iav da Eav suna da ma'adaddin kawalwali na birki mai yau na kula da fassara.
Don kula mai yau mai sinusoide, Form Factor ya bayar da:

Ma'anar Form Factor shine 1.11.
An haɗa mu'amala mai mahimmanci a matsayin tsari daga ma'adaddin takam, ma'adaddin kawalwali, zuwa sukar addinin r.m.s na birki mai yau. Don in bayyana mu'amala daga waɗannan uku abubuwa, an samu biyu na mafi inganci a sayar: Peak Factor da Form Factor.
Form Factors na sadarwaɗuwar sauran masu hanyar:
Sine wave: π/(2√2) ≈ 1.1107
Half-wave rectified sine wave: π/2 ≈ 1.5708
Full-wave rectified sine wave: π/(2√2) ≈ 1.1107
Square wave: 1
Triangle wave: 2/√3 ≈ 1.1547
Sawtooth wave: 2/√3 ≈ 1.1547
Wannan ya gama takardunawa na Form Factor.