What is Drone weight classes?
FAA drone regulations distinguish three weight classes: under 250 g (Category 1, registration-exempt for recreational use), 250 g to 55 lb (Part 107 small UAS), and over 55 lb (large UAS subject to different rules entirely).
Weight is the primary regulatory differentiator for drone classes:
• Sub-250 g (under 0.55 lb): Category 1 under § 107.39 (over-people permitted without restriction). Registration not required for recreational use. Examples: DJI Mini line, HoverAir X1, DJI Neo.
• 250 g to 55 lb (between 0.55 and 55 lb): Standard Part 107 small UAS class. Registration required. Remote ID required. Operating limits apply. Most consumer drones (Mavic 3, Air 3, Mini-with-Plus-battery, all Autel and Skydio consumer/prosumer).
• Over 55 lb: Large UAS — operates under different framework entirely. May require airworthiness certification under Part 21. Custom builds, agricultural drones, and large industrial drones fall here.
Within Part 107, additional weight-related distinctions: Categories 2, 3, and 4 under § 107.39 set kinetic-energy limits independent of weight. A heavy drone with crash-mitigating design (parachutes, frangible airframe) can qualify for over-people categories that a lighter drone might not.
What this means for pilots
Verify your drone's actual takeoff weight including battery, accessories, and props — many sub-250 g drones cross the threshold with the Plus battery or heavier props. Crossing 250 g re-triggers registration and Remote ID for recreational use.
FAQ
Why is 250 g the magic number?
FAA judgment that drones at or below this weight present low risk to people and property in most operations. The threshold matches the Canadian and UK regulatory thresholds for similar reasons.
Can I add accessories without crossing 250 g?
Calculate the total takeoff weight. ND filters typically add ~3 g; cases may add 10–20 g. Plus batteries on Mini drones add 50+ g.
What about FAA Category 2 weight limits?
Category 2 doesn't have a hard weight limit — it has a kinetic-energy limit (11 ft-lb on impact). Heavy drones with appropriate design can qualify.
Related terms
FAA regulations change. Verify current rules at faa.gov/uas before relying on this article for flight planning. Altoa is not the FAA.