{"id":2758,"date":"2026-04-21T19:44:51","date_gmt":"2026-04-21T19:44:51","guid":{"rendered":"https:\/\/eleroyalmagnifier.com\/?p=2758"},"modified":"2026-04-21T20:05:10","modified_gmt":"2026-04-21T20:05:10","slug":"what-is-the-magnification-formula","status":"publish","type":"post","link":"https:\/\/eleroyalmagnifier.com\/nl\/what-is-the-magnification-formula\/","title":{"rendered":"What is the magnification formula?"},"content":{"rendered":"\n

The magnification formula is the equation used to calculate how many times larger an image looks through a lens compared to the actual object. For a simple handheld magnifier, the formula is M = 25 \u00f7 f<\/strong>, where M is the magnification in X-power and f is the focal length of the lens in centimeters. For a compound microscope, total magnification is different \u2014 you multiply the eyepiece magnification by the objective lens magnification: Total M = eyepiece \u00d7 objective<\/strong>. A third version, the diopter-to-X-power conversion, is used for reading lamps and low-vision aids. The same formula is sometimes called the magnifying equation in physics textbooks. This guide walks through all three formulas with seven worked examples, a free calculator you can use on any device, and practical tips for wholesale buyers who need to verify what a supplier’s spec sheet actually claims.<\/p>\n\n\n\n

Free magnification calculator<\/h2>\n\n\n\n\n\n
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Magnification calculator<\/div>\n
Pick a mode and enter your values. Results update when you click Calculate or press Enter.<\/div>\n\n
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