Weight estimation in foals is of vital importance for dosing of medication and antihelminthics as well as for assessing nutritional requirements to optimise growth. Calibrated weighbridges are not routinely available and estimates by eye or using weightapes can be inaccurate due to differences between adult and foal body dimensions. This study aimed to assess the applicability to Sport Horse type foals of two body weight estimation equations developed for American Thoroughbred (Staniar et al, 2004) and Warmblood (Hois et al, 2005) foals.