In this letter, the surface area, avergae pore diameter, density measurements and adsorption isotherms of zirconia fibers derived from sol-gel technology are reported. Zirconia fibers were derived from the zirconium hydroxy hydrogel using the gel process. The surface-area analysis and pore-volume and pore-size distribution measurements were carried out by the BET method with krypton as the adsorbate.