A pedal assembly includes a pedal body having a tubular portion for mounting rotatably on a bicycle pedal shaft around an axis, front and rear end walls in a longitudinal direction parallel to the axis, and right and left pairs of front and rear lateral walls that extend respectively from the end walls in a first transverse direction to form rightmost and leftmost pairs of front and rear end portions. Two forward and rearward anchor members are respectively mounted between the rightmost front and rear end portions in the longitudinal direction and proximate to upper surfaces of the lateral walls, and between the leftmost front and rear end portions in the longitudinal direction and proximate to lower surfaces of the lateral walls, such that the forward and rearward anchor members are in symmetry relative to the first axis. Two force adjusting members are disposed between the left and right pairs of lateral walls in the longitudinal direction and proximate to the upper and lower surfaces thereof. Each of two coil springs has a first end that urges a respective rearward anchor member toward a corresponding forward anchor member, and a second end 52 that urges a respective adjusting member toward the tubular portion in the first transverse direction.