Calculations with Optical Instruments

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Print Size, Image Size and Resolution in DPI

A calculator for the size of an image in pixels, for the size of the print in centimeters, inches and other units and for the resolution in dpi, dots per inches, the common units for print products. For a good print quality, typically at least 100 dpi are recommended.
Please enter three values at image and print size or enter the resolution in dpi and both values either of the image size or of the print size. The remaining two values will be calculated.

	Width	Height	Unit
Image size:			Pixel
Print size:			MillimetersCentimetersMetersInches
Resolution:			dpi

Round to 012 decimal places

Example: an image of the size 1500 times 1000 pixels shall be printed with a width of 30 cm. The print height then will be 20 cm, the resolution is 127 dpi.

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