Abstract: Modular furniture units are quickly and easily assembled and/or disassembled using interconnecting hooking devices. The units are assembled from separate arm, seat and back sections and the interconnecting hooking devices are preferably of the same configuration on each piece, each of the hooking devices including a male member and female opening so that one device can be hooked into another device. In the simplest form, e.g. in a chair, no legs are needed because the arm members can support the entire structure. However, where sectional sofas or the like are constructed from the modular units and where there may be too much play between the modular units, it may be desirable to put support legs under the modular seat portions. Also, in another preferred form, the modular units can be assembled as or converted to the form of a divan or bed or the like.