The Required Size of a Kippa

One's Kippa should preferably be large enough to cover the entire head or the majority of the head. If, however, one prefers a smaller Kippa, this is acceptable, as long as it can be seen from all sides. One should not wear a Kippa so small that cannot be readily discerned from all sides. This is the ruling of Hacham Ovadia Yosef. Hacham Ovadia Hedaya (1889-1969), in one of his published responsa (Yaskil Abdi, vol. 6, p. 292a), writes that he would often reprimand people for wearing very small Kippot. Even one who normally wears a smaller Kippa, that does not cover the majority of his head, should try to wear a hat or a larger Kippa – that covers the majority of the head – while praying or reciting Birkat Ha'mazon.