Matthew's Metric Gum parlor http://www.mrnussbaumgames.com/metric/index.html
Metric Millionaire http://www.quia.com/rr/30535.html
Metric Weight and Capacity matching http://www.quia.com/cm/8967.html?AP_rand=1775371251
Scrambled Metric weight and Capacity http://www.quia.com/jw/43314.html?AP_rand=814173237
Metric Pop-Up http://www.quia.com/pop/29582.html?AP_rand=711656747
Unit conversion http://www.walter-fendt.de/m11e/conversion.htm
BBC Conversion Game http://www.bbc.co.uk/skillswise/numbers/measuring/lwc/game.shtml
Brainbashers http://www.brainbashers.com/
Customary Units matching http://www.quia.com/mc/65838.html
Animal weigh-in http://www.bbc.co.uk/education/mathsfile/shockwave/games/animal.html
Artie Ounces Soda Jerk http://www.mrnussbaumgames.com/soda/index.html
Equivalent Customary Measure http://www.hbschool.com/activity/con_math/g04c24.html
Converting between metric and customary http://www.aaamath.com/B/mea69_x2.htm
Convert it! http://www.image-ination.com/test_maker/convert.html
Measure it! (virtual balance) http://www.mhschool.com/science/2000/student/1/sims/sim3.html
Bang on the Clock http://www.oswego.org/ocsd-web/games/BangOnTime/clockwordres.html
Cyberchase games http://pbskids.org/cyberchase/allgames.html