Fiber sources used in weaned calf diets vary widely, but effects on performance and digestibility are not fully understood. Ninety-six Holstein steers (59 d of age; initial BW = 75.9 ± 1.76 kg) were received in 2 blocks of 48 calves and started on trial between October 2017 and January 2018. Calves were housed in groups with 4 calves/pen. All diets included whole corn, protein supplement, and liquid molasses. Treatments were 25% whole oats with 5% chopped grass hay (CON), 9.5% pelleted cottonseed hulls (CSH), 9.5% pelleted oat hulls (OH), and 5% chopped grass hay (HAY). All treatments were formulated for equal CP (21% on DM basis). Starch ranged from 35 to 39% and NDF ranged from 12 to 17% on a DM basis. Calves were offered diets for ad libitum intake and orts were weighed daily. Body weight, hip width, and body condition score (BCS) were assessed initially and at 28 and 56 d. During d 19–23 (78–82 d of age), fecal samples were taken and composited by pen to estimate total-tract digestibility using acid insoluble ash. Data were analyzed as a completely randomized design with repeated measures and pen as the experimental unit. Initial measurements were similar among treatments. Calf DM intake (P < 0.01), ADG (P < 0.05), and BCS change (P < 0.05) were greater for calves fed CSH vs. CON and HAY, but gain:feed tended to be less for CSH vs. HAY (P = 0.09). Dry matter intake as a % of BW was least for calves fed CON (2.95%) and HAY (3.05%) and greatest for calves fed CSH (3.35%; P ≤ 0.05). Hip width change was less for calves fed CON vs. other treatments (P < 0.05). Digestibility of NDF was greater for calves fed OH vs. CSH and HAY (P < 0.05), but not different from CON (P > 0.20). Other digestibility estimates did not differ among treatments. Calves fed CSH as a roughage source had greater ADG, but gut fill may have contributed to treatment differences as calves fed CSH consumed 10–19% more feed than other treatments resulting in reduced feed efficiency. Additionally, hay particle length in CON and HAY treatments may have limited intake compared with less physically effective fiber sources.