Dollar Bill Resources
Dimensions, the 3 dollar bill myth, and counterfeit detection tips in one fast reference hub.
How long is a dollar bill?
A modern US dollar bill measures 6.14 inches long by 2.61 inches wide (156 mm by 66.3 mm). Every current denomination shares the same size for machine processing.
What is a 3 dollar bill?
The 3 dollar bill is a common idiom for something fake or unbelievable. The United States has never issued a federal $3 note, though novelty notes exist and are not legal tender.
Counterfeit detection basics
Check for watermarks, security threads, color-shifting ink, and microprinting. The new 100 dollar bill also includes a 3D security ribbon and color-shifting bell in the inkwell.
New dollar bill redesign news
Redesign announcements come from the Bureau of Engraving and Printing and the US Treasury. Follow official updates for timelines and security changes across denominations.