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Length/Distance | Convert from zeptometer to em |
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Common Length Conversions Metric Length Conversions Unit Definition (zeptometer) The zeptometre (or zeptometer), symbol: zm, is an SI unit of metric length measurement. 1 zeptometre is 1e-21 metres, which is a very small distance Unit Definition (em) The em is a printer's unit of relative distance. One em is the height of the type size (in points) being used. If 12 point type is being set, then one em is 12 points, and so on.
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