Magnification Calculator
Calculate optical magnification from object and image parameters
About this calculator
The Magnification Calculator determines optical magnification ratios by analyzing the relationship between object and image parameters such as height, distance, or focal length. This tool is essential for photographers, microscopy technicians, astronomers, and optical engineers who need to calculate how much larger or smaller an image appears compared to the original object. Understanding magnification helps optimize lens selection, determine image quality, and ensure proper optical system design for various applications.
How to use
Enter the known object and image parameters such as object height, image height, object distance, or image distance into the respective fields. Select the calculation method based on your available measurements. Click calculate to instantly determine the magnification ratio, which shows how many times larger the image appears compared to the original object.
Frequently asked questions
What is the difference between linear and angular magnification?
Linear magnification compares physical sizes (height/width), while angular magnification compares the angles subtended by the object and image as viewed from a specific point.
Can magnification be less than 1?
Yes, magnification less than 1 indicates the image is smaller than the object, which occurs in applications like wide-angle photography or certain telescope configurations.
How does distance affect magnification?
In lens systems, magnification equals image distance divided by object distance. Moving closer to the object or farther from the image increases magnification.