A pivotal measuring wheel includes a handle set, a handle rod, a pivotal rod, a wheel seat, a wheel and a cable. The handle rod has a hollow handle seat and an arc-contoured first pivotal body. The first pivotal body has a first space and a first semicircular hole communicating with the first space. The pivotal rod has a hollow joint seat and an arc-contoured second pivotal body for connecting to the first pivotal body. The second pivotal body has a second space and a second semicircular hole communicating with the second space. The second space selectively communicates with the first space. The second semicircular hole selectively aligns and communicates with the first semicircular hole. The handle seat is freely pivotable relative to the joint seat without disturbing the cable.