Flight explained
How much does a Boeing 777 weigh?
Why aircraft have several different weight values, and which one is relevant.
The short answer
The weight of the Boeing 777 depends on the modification and current load. The empty 777-300ER aircraft weighs approximately 168 tons, but passengers, luggage, cargo and a large amount of fuel are added to it before a long-distance flight.
Weight Boeing 777-300ER: equipped aircraft and the limit on takeoff
The maximum takeoff weight of the 777-300ER is about 351.5 tons. This is not the usual weight of each flight, but the upper certification limit: the actual weight is calculated for a specific route and conditions.
Depending on the weight of the takeoff speed, the length of the run, the permissible height and flow. Before departure, the crew receives a centering schedule and calculation of characteristics.