A modular prosthetic foot includes a keel section and in some cases, an optional heel section. The keel section may also include an optional toe section. The keel section can include separate layers of various stiffnesses, wherein the optional toe section and the optional heel section are composed of varying stiffness layers nested together. The stiffness of the keel section is adjustable by a user without specialized tools. The components of the prosthetic foot are modular and can be removed and exchanged without altering the fit and alignment of the prosthetic foot.
