![]() A pound is defined as exactly 0.45359237 kilograms. Not sure why I didn't see the difference in pounds. A pound is a unit of weight commonly used in the United States and the British commonwealths. I was incorrectly only looking at the number of ounces. And extra accuracy is definitely required unless answers are aceptable with a fifth of a percent error, so 35.27396195 is a good number to use (or 35.27396194958 for the really picky who have hardware and software supporting the latest decimal floating point standard, but I suppose none of us except some of the youngest are likely to see that). oz while the method Nonelron asked about delivers 150 lbs 14.72 oz.īut I agree with you that it's generally cleaner to start with the smaller unit, so going for ounces first is good. Then I looked at it a bit closer, and thought the number of operations and the number of decimal places are extremely low, that crazy truncation stuff can't have kicked in at all - so I decided the only answer was to run it - and your method delivers 151 pounds 3.793. When I first read your comment, I thought there must be some crazy side-effect of the horrible truncation in decimal arithmetic because 2.2 lbs /kg is 35.2oz/kg and the error of about 0.074 oz/kg could only account for about being about 5 ox adrift. It's about 5.07 oz out, which is much closer to the 5 oz J Livingstone suggested than to your 11. ![]() If you do the conversions using ounces to start with, the formulas become extremely symmetrical. Suggest you do as Scott suggested.increase accuracy.you are 5 ounces adrift
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