Food Composition Databases
Use these programs to look-up the calories, fat, vitamins, minerals and other nutrient contents of specific foods.

Food Nutrient Database
Enter individual food items for a profile of its nutrient value. This USDA nutrient database (for Standard Reference, Release 12) contains over 5,000 food items.
www.nal.usda.gov/fnic/cgi-bin/nut_search.pl
Here's alternate version of the USDA nutrient values with a few extras added
www.rahul.net/cgi-bin/fatfree/usda/usda.cgi
Fast Food Facts (database of over 1000 fast food items)
www.olen.com/food
19,000 food items including 71 restaurants (from NutriBase)
www.nutribase.com/bin/bin.exe?nb:frontdoor
Chinese Food Composition Database (order on tape only)
www.ntis.gov/fcpc/cpn4621.htm
Mexican Food Composition Database
spin.com.mx./~jledesma/
Swiss Food Composition Database
food.ethz.ch/
International Food Composition Tables
10,000 foods from U.S., French, Danish and Hungarian databases. This is an experimental search engine and you may have difficulty accessing the server if heavy traffic.
ru-ps1.ethz.ch/langual/query/homebyfacet.htm for search by properties
ru-ps1.ethz.ch/langual/query/homebyfoodname.htm for search by food name
WorldFood Dietary Assessment System ($$$)
1800 foods in six countries (Egypt, Kenya, Mexico, Senegal, India and Indonesia). Enter your meals for one day and get a report on 53 nutrients. Purchase for $250 (last time we checked) from the University of California at Berkeley. socrates.berkeley.edu/~OTL/worldfood.html