The Burj Khalifa in Dubai stands as the tallest artificial free-standing structure ever built, with a total tip height of 829.8 meters (2,722 feet) and an architectural height of 828 meters (2,717 feet). For context, this iconic skyscraper is roughly twice the height of the Empire State Building. If 495 people of average height (5.5 feet) were arranged vertically one over another, they would just reach the top tip of the Burj Khalifa. The tower holds approximately 14 world records and has 163 stories above ground, with the top floor sitting at 605 meters (1,985 feet). The total construction cost of this engineering marvel was $1.5 billion. To better understand how this structure came to be, read about the role of Burj Khalifa construction of the tallest structure in the world.
Exact Height Measurements of the Burj Khalifa
The Burj Khalifa has several different height measurements depending on what reference point is used. The total architectural height refers to the structural top of the building, while the tip height includes the antenna spire. The following table breaks down all the key height metrics:
| Measurement | Height in Meters | Height in Feet |
|---|---|---|
| Total Tip Height (including antenna) | 829.8 m | 2,722 ft |
| Architectural Height (roof) | 828 m | 2,717 ft |
| Antenna Spire Height | 223 m | 732 ft |
| Top Floor Height | 605 m | 1,985 ft |
| Highest Observatory (At the Top, SKY) | 555.7 m | 1,823 ft |
| Number of Stories | 163 floors | |
The 223-meter-tall antenna spire contributes significantly to the building’s overall height. Without the spire, the Burj Khalifa would still be an extraordinarily tall building but would fall short of the 800-meter mark. The top floor at 605 meters is one of the highest occupied floors in the world. For a deeper look at the engineering behind these numbers, explore the Burj Khalifa structural details.
Key Facts and Specifications
The Burj Khalifa is more than just its height. The building contains 57 elevators and 8 escalators that move visitors and residents through its massive volume. The floor area of the tower spans 309,473 square meters, making it one of the largest single-building floor areas in the world. The primary structural material is reinforced concrete, with a steel spire at the top. For additional details on the design approach, refer to Burj Khalifa design, construction, and structural details.
- Construction period: Started January 6, 2004; completed October 1, 2009; officially opened January 4, 2010
- Architectural style: Neo-futurism, inspired by Islamic architecture and the Hymenocallis flower
- Owner: Emaar Properties, a leading Dubai-based real estate developer
- Main contractor: Samsung C&T, the South Korean construction giant
- Structural engineer: Bill Baker of Skidmore, Owings & Merrill (SOM)
- Lead designer: Adrian Smith, who later designed the Jeddah Tower
- Designer company: Skidmore, Owings & Merrill LLP
- Former name: Burj Dubai, renamed Burj Khalifa in honor of Khalifa bin Zayed Al Nahyan
The 57 elevators in the Burj Khalifa are among the fastest in the world, traveling at speeds of up to 10 meters per second (36 km/h). The building also features a double-deck observation deck on the 124th and 125th floors, plus the premium SKY lounge on the 148th floor, which is the world’s highest observation deck at 555.7 meters.
Construction Timeline and Engineering Milestones
The construction of the Burj Khalifa took approximately five years and involved more than 12,000 workers at its peak. The project was divided into multiple phases, each marking a significant milestone in vertical construction. The building rose at an average rate of one to two floors per week. To understand the complete engineering strategies employed during construction, read about the Burj Khalifa construction and engineering strategies behind the world’s tallest building.
- January 2004: Excavation and foundation work begins
- February 2004: Pile foundation installation, involving 194 bored cast-in-place piles, each 1.5 meters in diameter and 43 meters deep
- July 2004: Concrete raft foundation pour, one of the largest in construction history
- September 2004: Superstructure construction commences with reinforced concrete core and wing walls
- June 2006: Building reaches the 50th floor
- March 2007: Burj Khalifa surpasses the 555-meter mark, overtaking Taipei 101 as the world’s tallest building
- April 2008: Structural topping out at 828 meters
- October 2009: Completion of all construction and interior fit-out
- January 4, 2010: Official public opening, celebrated with a spectacular light, sound, and fireworks show
The foundation alone required approximately 45,000 cubic meters of concrete weighing over 110,000 tonnes. The reinforced concrete structure used a high-performance pumped concrete that was specially formulated to withstand the extreme temperatures of the Dubai desert. The building’s Y-shaped floor plan was designed to optimize residential space while providing structural stability against wind loads. Discover more about how this feat of engineering fits into civil engineering history by reading about the Burj Khalifa as the pinnacle of civil engineering achievement.
Floor Plan and Structural Design
The Burj Khalifa’s structural design is based on a bundled tube system with a central hexagonal core surrounded by three wing-shaped buttresses. This configuration provides exceptional torsional resistance while allowing the building to rise to unprecedented heights. The Y-shaped plan maximizes views of the Arabian Gulf while minimizing the structural impact of wind loads.
- Ground to level 7: Hotel (Armani Hotel Dubai) and retail space
- Levels 8 to 16: Luxury residential apartments
- Levels 17 to 18: Sky lobbies and mechanical floors
- Levels 19 to 39: More residential apartments with premium finishes
- Levels 40 to 42: Sky lobbies and mechanical floors
- Levels 43 to 108: Corporate suites and private residences
- Levels 109 to 154: Further luxury residences and mechanical floors
- Levels 124 and 125: Observation deck (At the Top)
- Level 148: Premium observation deck (SKY), the highest in the world
- Levels 155 to 163: Mechanical floors and the spire structure
The spire, which rises from level 155 and extends to 829.8 meters, is constructed primarily of structural steel and houses communications equipment, elevators, and emergency lighting. The spire alone weighs approximately 4,000 tonnes.
Future Supertall Projects and Legacy
While the Burj Khalifa remains the world’s tallest building as of 2026, several upcoming projects aim to challenge its record. The Dubai Creek Tower, designed by the same architect Santiago Calatrava, was originally planned to reach approximately 1 kilometer in height, though construction has faced delays. The Jeddah Tower in Saudi Arabia, formerly known as Kingdom Tower, aims to surpass the 1,000-meter mark and become the first kilometer-tall building. For a detailed comparison of these two ambitious projects with the Burj Khalifa, see our analysis on Dubai Creek Tower engineering and how this supertall aims to surpass the Burj Khalifa.
The legacy of the Burj Khalifa extends beyond its height records. The building established new benchmarks in construction techniques, concrete pumping technology, wind engineering, and vertical transportation systems. Its success demonstrated that buildings exceeding 800 meters are structurally and economically feasible, paving the way for the next generation of supertall and megatall structures.
Conclusion
The Burj Khalifa stands at an impressive 829.8 meters (2,722 feet) from tip to ground, with 163 stories and a construction cost of $1.5 billion. From its record-breaking height to its innovative bundled-tube structural system, the Burj Khalifa represents the pinnacle of what human engineering can achieve. It holds approximately 14 world records including the tallest building, tallest free-standing structure, highest observation deck, and highest occupied floor. As new projects emerge in the race for vertical supremacy, the Burj Khalifa remains a benchmark against which all future supertalls will be measured. For a direct side-by-side comparison with its main competitor, explore Jeddah Tower vs Burj Khalifa: 18 key differences between the world’s tallest skyscrapers.