The size of the Boeing 777 will depend on the model being measured. The following are some well known variants of the airliner.

### Dimensions of the Boeing 777 300ER

Its seating capacity is 365 for 3-class, 451 for 2-class and 550 for the maximum. The 300ER’s length is 242 ft 4 in (73.9 m). The wingspan is 212 ft 7 n (equal to 64.8 m) with a wing sweepback of 31.64 degrees.

The tail height is 61 ft 5 in (18.7 m) and a cabin width of 19 ft 3 in (that’s about 5.86 m). The fuselage width of the 300ER is 20 ft 4 n (6.19 m).

The size of the Boeing 777 300ER gives it an empty weight of 366,940 lbs (166,881 kg). The maximum takeoff weight of the 300ER is 775,000 lbs (or 351,534 kg). The cruising speed is Mach 0.84 (equivalent to 905 km/h, 490 knots or 560 mph).

This is at an altitude of 35,000 ft (11,000 m). The maximum Mach speed is 0.89 (equal to 590 mph or 905 km/h and 512 knots). The max payload range is 5,500 nmi or 10,190 km. its service ceiling is 43,000 ft (13,140 m).

### Dimensions of the 777 300

The maximum seating capacity is 550. Its length is 242 ft 4 in (73.9 m) with a wingspan of 199 ft 11 in (60.9 m). The size of the Boeing 777 300 gives it a wing sweepback of 31.64 degrees.

The 777 300 possesses a tail 60 ft 8 in tall (18.5 m). The cabin width is 19 ft 3 in (5.86 m) and the empty weight is 353,600 lbs (or about 160,120 kg).

The maximum take off weight is 660,000 lbs or 299,370 kg. The cruising and maximum speed is the same as that of the 300ER (905 km/h and 950 km/h respectively).

The payload range is 3,800 nmi and the take off run is 11,200 ft (3,410 m). The fuel capacity is 45,220 US gallons (171,160 l). The service ceiling is also 43,100 ft (13,140 m).

### Dimensions of the 777 200LR

The size of the Boeing 777 200LR and its other specifications are as follows: the seating capacity is 301 (3 class), 400 (2 class) and 440 (maximum). The length is 209 ft 1 in (63.7 m) with a wingspan of 212 ft 7 in or 64.8 m. The wing sweepback is 31.64 degrees.

The tail height is 61 ft 9 in (18.8 m). The cabin width is the same as the others (19 ft 3 in) as is the fuselage width (20 ft 4 in or 6.19 m). The empty weight of the 777 200LR is 326,000 lbs (148,181 kg).

The cruising speed is Mach 0.84 (560 mph or 905 km/h). The highest speed is Mach 0.89 (950 km/h or 560 mph). Its fuel capacity is 53,515 US gallons. The service ceiling is 43,100 ft (13,140 m).

The size of the Boeing 777 is always evolving. With competition heating up, expect more variants of the 777 to appear.

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