What is 12 40mm on micro four thirds in full frame?

12-40mm on Micro Four Thirds gives the view of 24-80mm on full frame.

The same view on every common format:

• Medium format (44 x 33): 30-101mm
• Full frame: 24-80mm
• APS-C: 16-53mm
• APS-C (Canon): 15-50mm
• Micro Four Thirds (yours): 12-40mm
• 1-inch: 8.9-30mm
• 1/1.3-inch: 6.7-22mm
• 1/1.7-inch: 5.2-17mm
• 1/2.3-inch: 4.3-14mm

Crop factors are by the sensor diagonal, rounded as they're usually quoted; a format with a different shape (4:3 against 3:2) frames a little differently across the width. More in the focal length converter.

Computed from the sensor sizes, not written by a model.