I borrowed these conversions scripts from examples. I hope they work for you. This an older page I decided to link to. Much older links may not work. But the conversions should. I will fix up the dead links soon. Use this form to examine various values on your way to an evaluation on space travel or related projects. I do not CERTIFY that these vales are correct - so please test them against a reliable source before rendering true for more serious calculations. Or, just have fun! Be sure to click on the conversion button after entering new values. The conversion box code was obtained as freeware from Total Javascripts. - Tom