Weight and registration threshold calculator
Add up what you are actually flying, not what the box says, and see which obligations that number triggers.
Researched from published specifications and verified owner reviews · updated 2026
The short answer
The United States registration threshold is 250 g (0.55 lb) at takeoff with everything fitted, and the upper limit for both recreational and standard Part 107 operations is 55 lb (25 kg). Accessories count: a 249 g aircraft with an extended pack and prop guards commonly weighs 280 to 300 g, which makes it a registered aircraft.
Two hundred and fifty grams is the most consequential number in consumer drone flying, and it is routinely measured wrong. The figure on the specification sheet is the aircraft with its standard battery and nothing else. What the rule cares about is the aircraft as it leaves the ground, which on a lot of real setups is 30 to 60 g heavier.
This tool adds up the configuration you actually fly and tells you which side of the line you are on, plus what that means for registration, marking and the rest of your obligations.
Compliance
Takeoff weight and what it triggers
Tick everything that will be attached when the aircraft leaves the ground. Typical accessory weights are pre-filled and can be edited if you have weighed yours.
Estimates only, from published specifications. Wind, temperature, altitude, payload and pack age all move the real number, usually in the direction that costs you flight time. Always keep a reserve and follow the manufacturer's own limits.
What 250 g does and does not do
Under 250 g, a recreational flight does not require aircraft registration. That is the whole exemption. It is genuinely useful, and it is much narrower than the hobby generally believes.
Everything else still applies. A recreational flyer at 200 g still needs a TRUST certificate and must be able to present it. They still must keep the aircraft within visual line of sight, still must not interfere with manned aircraft, and still need an airspace authorization before launching in controlled airspace. The Remote ID rules apply to the aircraft based on how it is built and how it is flown, not on a weight exemption you might assume covers everything.
And the moment the flight is for work, the weight question changes shape entirely: any aircraft flown under Part 107 must be registered at any weight. A 135 g aircraft used to shoot a property listing is a registered aircraft.
Where the grams come from
| Item | Typical added weight | Notes |
|---|---|---|
| ND filter | 3 to 6 g | Magnetic mounts are lighter than screw-on frames |
| Propeller guards, full cage | 25 to 40 g | The single heaviest common accessory on a Mini class aircraft |
| Anti-collision strobe | 8 to 20 g | Per unit. Two units is common for night work |
| Extended battery, over standard | 35 to 55 g | This is what pushes most 249 g aircraft over on its own |
| Remote ID broadcast module | 20 to 40 g | Only needed where the aircraft has no standard Remote ID |
| Landing gear extensions | 10 to 25 g | Common on cinewhoops and inspection setups |
| Small mounted payload or sensor | 30 to 200 g | Also changes the aircraft's flight characteristics |
The pattern that catches people: a 249 g aircraft plus a extended pack, a filter and a pair of strobes lands somewhere near 310 g. That is a registered aircraft, and it is also a heavier aircraft with shorter endurance, which the flight time calculator will quantify.
Registration in practice
Registration happens through the FAA DroneZone portal, costs a small fee, and lasts three years. The mechanics differ by path in a way that matters:
- Recreational registration is issued to you, the flyer, and one number covers every aircraft you fly recreationally.
- Part 107 registration is issued per aircraft, so five aircraft means five registrations and five numbers.
- Marking requires the number to be legible on an exterior surface, readable without tools and without opening a compartment. A printed label on the underside is fine.
The full walkthrough, including what you need before you start and how to handle an aircraft you fly both ways, is in how to register a drone. The consolidated thresholds sit on the drone weight classes chart and the wider rule set on the FAA rules quick reference.
The upper limit
Fifty five pounds, 25 kilograms, including everything on board at takeoff. That is the ceiling for recreational flying and for standard Part 107 operations alike. Almost nothing in the consumer or prosumer market approaches it, so in practice it constrains custom heavy-lift and agricultural aircraft rather than anything you are likely to buy. Above it, you are into a separate authorization pathway that is well outside the scope of this site.
Weigh it once, write it down three ways
The most reliable way to stop guessing is to put the aircraft on a kitchen scale and record three figures: bare with the standard pack, with the accessories you normally fly, and with everything you own fitted at once. Those three numbers cover every configuration you are likely to launch in, and they take five minutes to establish permanently.
Do it with the aircraft exactly as it leaves your hand, including the microSD card, any filter already fitted and the propellers you actually use. Specification sheets quote a configuration that may not match yours, and a scale does not have an opinion. If the result sits within a few grams of 250, treat that configuration as being over the line rather than gambling on the tolerance of a kitchen scale.
Choosing an aircraft around the threshold
Whether the sub-250 g class is worth targeting depends on what you value. The exemption saves a small fee and a small amount of paperwork, and it removes an aircraft-marking obligation. What it costs is airframe capability: lighter aircraft handle wind worse, carry smaller sensors, and have less thrust in reserve. A DJI Mini 4K ($269) and a DJI Mini 5 Pro ($759) both stay under the line, while an DJI Air 3S (RC-N3) ($989) gives up the exemption and gains a genuinely more capable airframe.
That trade is argued out properly in sub-250 g versus heavier aircraft, and the aircraft themselves are compared in best drones under 250 grams. If the aircraft is for work rather than fun, the weight exemption is irrelevant to you and the Part 107 versus TRUST comparison is the page you actually want.
Questions people ask
+ What is the FAA drone registration weight threshold?
Two hundred and fifty grams, which is 0.55 pounds, measured at takeoff with everything fitted. A recreationally flown aircraft below that weight does not require FAA registration. At or above 250 g it does, and the registration number must be marked on the exterior. Any aircraft flown under Part 107 must be registered at any weight, including one that weighs less than 250 g.
+ Do accessories count toward the 250 g limit?
Yes. The threshold is takeoff weight with everything attached: filters, propeller guards, strobe lights, a Remote ID broadcast module, an extended battery, a mounted payload. A 249 g aircraft with an extended pack and prop guards is commonly 280 to 300 g, which is a registered aircraft. Weigh the actual configuration you intend to fly rather than trusting the number on the box.
+ Does staying under 250 g exempt me from other rules?
No, and this is the most common misunderstanding in the hobby. Sub-250 g exempts a recreational flight from aircraft registration and nothing else. Recreational flyers still need TRUST, still must fly within visual line of sight, still need airspace authorization in controlled airspace, and the Remote ID rules still apply to the aircraft based on how it is built and flown.
+ What is the maximum weight a drone can be?
Fifty five pounds, which is 25 kilograms, including everything on board at takeoff. That is the ceiling for both recreational flying and standard Part 107 operations. Anything heavier needs a separate authorization pathway. In practice almost no consumer or prosumer aircraft comes close, and the limit matters mainly for custom heavy-lift builds and agricultural aircraft.
+ How do I mark my registration number?
The registration number must be legible on an exterior surface of the aircraft, readable without tools and without opening any compartment. A printed label or an engraved plate on the underside of the body is the normal approach. One registration covers all your recreational aircraft, whereas Part 107 requires each aircraft to be registered individually.
+ Are the thresholds the same in other countries?
No. The 250 g line happens to appear in several regimes, including the European Union, the United Kingdom and Canada, but what it triggers differs everywhere. The EU uses class marks and open category subcategories, Canada has its own registration and certificate structure, and Australia and Japan differ again. Never carry a United States conclusion across a border. Check the national aviation authority for the country you are flying in.
