Quarter (7g)

A quarter is one-quarter of an avoirdupois ounce of cannabis flower — exactly 7.0874 g (28.3495 g ÷ 4), almost universally sold and tracked as 7 g in legal U.S. dispensaries. Like the eighth, the quarter is an imperial holdover entrenched by decades of illicit-market pricing; the Arrestee Drug Abuse Monitoring dataset used by RAND researchers contains thousands of "quarter" and "quarter-ounce" transactions. Canadian retail instead packages 7 g as a metric quantity with no imperial equivalence on the label. Note: The retail 7 g quarter is ~1.2% lighter than the true imperial quarter ounce. State regulatory texts (e.g., Colorado 1 CCR 212-3, Washington RCW 69.50.4013) specify possession limits in ounces but allow retail packaging in metric equivalents.