Japanese bows are sometimes explained in business etiquette materials by angle: a casual bow at about 15 degrees, a polite bow at about 30 degrees, and a deep formal bow at about 45 degrees. These numbers are only rough guides, however. Japanese people do not normally think, “This should be 15 degrees” or “This should be 30 degrees” every time they bow.
What matters more is matching the depth of the bow to the weight of the situation.
The lightest of the three is eshaku (会釈), a casual bow. It is used for things like greeting someone briefly at work or giving a small acknowledgment or thanks. It is the kind of bow used when doing nothing would feel a little too cold, but a deep bow would be unnecessary.
Keirei (敬礼) is a more polite and deliberate bow. It is used when greeting visitors, showing respect to someone in a business setting, or in other situations that are somewhat more formal.
The deepest is saikeirei (最敬礼). It is used when showing especially deep respect or making a serious apology. It is not something normally used for an ordinary casual greeting.
The important point is that a deeper bow is not always automatically “better.”
If someone you knew simply passed you on the street and suddenly gave you a very deep formal bow from the waist, you might not think, “How polite.” You might instead wonder, “What happened?” The bow would feel too heavy for the situation.
The opposite is also true. In a serious apology, giving only a very slight nod could feel far too casual.
So the difference between eshaku, keirei, and saikeirei is not just a matter of angle.
A light greeting calls for eshaku, a more formal or respectful greeting calls for keirei, and especially deep respect or a serious apology calls for saikeirei.
Rather than memorizing exact degrees, it is more useful to understand these three different levels of “weight.” That is much closer to how bowing actually works in everyday Japan.
References
- Ministry of Health, Labour and Welfare / Hokkaido Hello Work, “Job Guidance”
