I use a PDR type program. I also use a calculator that converts i.r. 203 # = then hit the kg key and it converts. It also does body surface area, temp conversion. I have seen programs that do gtt rates, I don't use one as all our IVs are on pumps. There are tons of applications for nurses. Do a web search for Palm RN, the address changed and I don't have it bookmarked.