Magnification Calculator

Calculate image distance, magnification, and image characteristics

Use Calculator Now ↓

Thin Lens Equation

1/f = 1/s + 1/s'

Linear Magnification

m = -s'/s = h'/h

meters

Positive for converging lens, negative for diverging lens

meters

Distance from object to lens (must be positive)

Understanding Magnification

Magnification Sign

  • m > 0: Upright image (same orientation as object)
  • m < 0: Inverted image (upside down)
  • |m| > 1: Magnified (larger than object)
  • |m| < 1: Reduced (smaller than object)

Image Distance Sign

  • s' > 0: Real image (same side as light exits)
  • s' < 0: Virtual image (same side as object)

Related Tools