The Burj Khalifa stands 828 meters (2,717 feet) tall, making it the tallest building in the world by a wide margin. Located in downtown Dubai, United Arab Emirates, this megatall skyscraper surpasses the next tallest building — the Merdeka 118 in Kuala Lumpur at 678.9 meters — by nearly 150 meters. The Burj Khalifa height of 828 m includes its 244-meter spire and extends across 163 occupied floors, holding over 30 world records since its opening in 2010.
Introduction
The Burj Khalifa, standing at a total height of 828 meters (2,717 ft) with 163 floors above ground, is the tallest building and tallest freestanding structure on Earth. Located in downtown Dubai, United Arab Emirates, this megatall skyscraper was completed in 2009 and officially opened on January 4, 2010. It holds multiple world records, including tallest structure, highest occupied floor, longest elevator travel distance, and tallest building by roof height (636 m).
Designed by Skidmore, Owings & Merrill with architect Adrian Smith leading the design, the Burj Khalifa is a mixed-use tower containing residences, offices, an Armani Hotel, observation decks, and restaurants. It is the centerpiece of a $20 billion development and has become the defining symbol of modern Dubai.
Height & Engineering Records
The Burj Khalifa height of 828 meters (2,717 feet) is difficult to grasp without comparison. At more than twice the height of the Empire State Building (443 m / 1,454 ft including antenna), it would dwarf most of humanity's tallest achievements stacked together. The Eiffel Tower at 330 meters reaches only 40% of the Burj Khalifa's total height. If you placed the Statue of Liberty (93 m) on top of the Eiffel Tower, the combined structure would still fall short by 405 meters.
The tower's height breaks down into three measurements that each hold their own record. The roof height of 636 meters is the highest of any building. The highest occupied floor sits at 584.5 meters on level 154. The 244-meter communications spire crowning the structure brings the total Burj Khalifa height to its record-setting 828 meters.
Height Comparisons
- Burj Khalifa: 828 m (2,717 ft) — tallest building in the world
- Merdeka 118 (Kuala Lumpur): 678.9 m (2,227 ft) — second tallest
- Shanghai Tower: 632 m (2,073 ft)
- Abraj Al-Bait (Mecca): 601 m (1,972 ft)
- One World Trade Center (New York): 541 m (1,776 ft)
- Empire State Building (New York): 443 m (1,454 ft)
- Eiffel Tower (Paris): 330 m (1,083 ft)
Construction Timeline
Building to such a height required extraordinary engineering precision. Excavation for the foundation began in January 2004, and the structure rose at a pace of one to two floors per week during peak construction. The tower reached its full Burj Khalifa height of 828 meters on October 1, 2009, with the spire installed in the final phase. Total construction time was approximately 5 years and 9 months, with the official opening on January 4, 2010.
Elevators & Vertical Transport
The Burj Khalifa has 57 elevators and 8 escalators. The fastest elevators travel at 10 meters per second (36 km/h or 22 mph), covering the distance from ground level to the 124th-floor observation deck in roughly 60 seconds. The longest single elevator run is 504 meters — itself a world record. A dedicated service elevator runs the full height of the building, the longest elevator shaft ever installed.
Foundation & Structural Engineering
Supporting a structure of 828 meters in height required a foundation system unlike anything previously attempted. The Burj Khalifa sits on a massive reinforced concrete mat 3.7 meters thick, supported by 194 bored reinforced concrete piles drilled 50 meters deep into the ground. Each pile is 1.5 meters in diameter, and together they anchor the tower into a layer of calcisiltite and sandstone bedrock beneath the desert sand.
The numbers behind the Burj Khalifa's construction are staggering. The building used approximately 330,000 cubic meters of concrete — enough to fill 132 Olympic swimming pools — and 39,000 metric tonnes of steel reinforcing bar. The concrete was specially formulated to withstand pressures of 80 megapascals and was pumped to a world-record height of over 600 meters using specially developed high-pressure pumps. At peak construction, 12,000 workers were on site daily.
At full Burj Khalifa height, the top of the spire can sway up to 2 meters (approximately 6 feet) in strong winds, though the movement is slow and imperceptible to occupants. The Y-shaped structural design was specifically engineered to reduce wind loads, allowing the tower to withstand wind speeds of up to 240 km/h (150 mph). Wind tunnel testing involved over 40 individual studies to refine the aerodynamic profile of the building.
History & Origins
- Construction: January 2004 – October 2009
- Opened: January 4, 2010
- Developer: Emaar Properties
- Cost: Approximately $1.5 billion
- Named After: Sheikh Khalifa bin Zayed Al Nahyan
The project was conceived as part of Dubai's strategy to diversify from an oil-dependent economy into a tourism and business hub. The goal was to build the world's tallest structure — a tower whose height would make Dubai internationally recognizable. Construction employed over 12,000 workers daily at peak periods, with the concrete core sometimes being poured around the clock in night shifts to avoid the extreme daytime heat.
Originally named Burj Dubai during construction, the tower was renamed Burj Khalifa at its opening ceremony to honor Sheikh Khalifa bin Zayed Al Nahyan, the president of the UAE, whose government provided crucial financial support during the 2008 global financial crisis. The renaming was reportedly a surprise to developers Emaar Properties, but acknowledged the financial lifeline that Abu Dhabi extended to Dubai during the economic downturn.
Architecture & Design
- Total Height: 828 m (2,717 ft) to tip of spire
- Roof Height: 636 m (2,087 ft)
- Floors: 163 above ground, 2 below ground, 46 maintenance levels
- Elevators: 57 (fastest travels at 10 m/s / 36 km/h)
- Floor Area: 309,473 m² (3.33 million sq ft)
- Exterior Cladding: 26,000+ hand-cut glass panels
The tower's Y-shaped floor plan was inspired by the Hymenocallis flower, a desert flower native to the region. This tripartite design is not merely aesthetic — the three "petals" buttress each other structurally, and as the tower rises, the setbacks at each wing occur in a spiraling pattern that confuses wind vortices, dramatically reducing wind forces on the building. The tower steps back 27 times as it rises, with each setback carefully calibrated through wind tunnel testing.
The exterior cladding comprises over 26,000 glass panels, each individually hand-cut, with a reflective glazing system designed to withstand Dubai's extreme summer temperatures exceeding 50°C. The cladding reduces solar heat gain by reflecting sunlight, lowering the energy needed for cooling. The building's water condensation collection system harvests about 56,000 liters of water per day from the air — equivalent to roughly 20 swimming pools per year — used to irrigate the surrounding landscape.
Cultural Significance
The Burj Khalifa has transformed Dubai's global image and cemented its reputation as a city of superlatives. Its 828-meter silhouette appears in films (including Mission: Impossible — Ghost Protocol, where Tom Cruise famously climbed its glass exterior), video games, and media worldwide. The annual New Year's Eve fireworks and LED light shows projected across the tower's facade are broadcast to billions.
The observation decks — "At the Top" on levels 124-125 and "At the Top SKY" on level 148 — attract over 1.87 million visitors per year. The 148th-floor observation deck, at 555 meters above ground, is the highest outdoor observation deck in the world. From this vantage point on a clear day, visitors can see over 80 kilometers in every direction, with the Arabian Gulf coastline curving into the distance.
Key Facts
- The Burj Khalifa height is 828 meters (2,717 ft) — nearly twice the height of the Empire State Building and 2.5 times the Eiffel Tower.
- It holds over 30 world records including tallest building, highest occupied floor, and highest outdoor observation deck.
- The foundation goes 50 meters deep, supported by 194 concrete piles anchored into bedrock.
- Construction used 330,000 cubic meters of concrete and 39,000 tonnes of steel rebar.
- The tip of the tower can be seen from 95 kilometers away on a clear day.
- At.mosphere on level 122 is the world's highest restaurant, serving diners at 441 meters above ground.
- The building weighs approximately 500,000 tonnes — roughly equivalent to 100,000 elephants.
Fun Facts
- The Burj Khalifa is so tall that residents on upper floors see the sun set up to three minutes later than those at ground level — during Ramadan, fasting times are officially adjusted for higher floors.
- The building sways up to 2 meters at the top in strong winds, but the motion is so slow and gradual that occupants cannot feel it.
- The total weight of aluminum used in the exterior cladding equals that of five Airbus A380 aircraft.
- During peak construction, the specially formulated concrete was poured only at night when temperatures dropped, and ice was added to the mix to prevent it from setting too quickly in the desert heat.
- The tower's plumbing system manages over 946,000 liters of water daily, and the air conditioning system provides cooling equivalent to melting about 10,000 tonnes of ice per day.
- If you rode an elevator from the ground floor to the top observation deck and back, you would travel over 1 kilometer vertically in a single round trip.
Final Thoughts
The Burj Khalifa is the ultimate expression of vertical ambition — a building that redefined what humans can construct. At 828 meters, the Burj Khalifa height record has stood since 2010 and may endure for years to come. Rising from the desert like a silver needle, it has given Dubai an instantly recognizable silhouette and set an engineering benchmark that pushes the boundaries of materials science, aerodynamics, and construction logistics. It is proof that with sufficient vision, engineering talent, and determination, there is almost no limit to how high we can build.