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Accuracy
We calculate every result from official definitions and check our work, but the site is provided “as is” without warranties. For medical doses, engineering, legal metrology or anything safety-critical, confirm values with a qualified professional or the official source.
Printable charts
You may print, save and share our charts for personal, classroom and workplace use, as long as the OneEquals footer stays on the chart. Please don’t resell them or republish them as your own.