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21 mm to inches

20 Jun, 2025

There are approximately 0.826772 inches in 21 millimeters (mm).

Let’s see how this value is calculated

We know that 1 inch equals 25.4 mm. So, to convert 21 mm into inches, we simply divide 21 by 25.4:

21 mm ÷ 25.4 mm/inch = 0.826772 inches

That’s how we get the approximate conversion of 21 millimeters into inches.

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