Gravity on Mars works the same way it does on Earth, but it is much weaker because Mars is a smaller and less massive planet. In fact, the gravity on Mars is only about 38% of Earth's gravity, which means people and objects would weigh significantly less there.
Gravity is the force that pulls objects toward the center of a planet. The strength of gravity depends mainly on a planet's mass and size. Mars has a diameter of about 6,779 kilometers, which is roughly half the size of Earth, and it contains only about 11% of Earth's mass. Because it has less mass, Mars produces a weaker gravitational pull. Scientists have measured the surface gravity on Mars at approximately 3.72 meters per second squared (m/s²), compared with 9.81 m/s² on Earth.
One of the easiest ways to understand Martian gravity is to think about weight. Although a person's mass stays the same wherever they go, their weight changes depending on the planet's gravity. For example, someone who weighs 70 kilograms on Earth would feel as if they weighed only about 27 kilograms on Mars. As a result, astronauts would be able to jump higher, lift heavier objects more easily, and move around with less effort than they do on Earth.
Mars' weaker gravity also affects the planet's environment. The planet is famous for its massive dust storms, some of which can cover nearly the entire globe. Because gravity is weaker and the atmosphere is very thin, dust particles can remain suspended in the air for longer periods. Scientists also believe that Mars gradually lost much of its original atmosphere over billions of years because its lower gravity was less effective at holding gases close to the planet.
Understanding gravity on Mars is especially important for future human exploration. Researchers are studying how living in a low-gravity environment might affect astronauts during long-term missions. Studies suggest that spending extended periods in reduced gravity may contribute to muscle loss, decreased bone density, and changes in cardiovascular function if people do not maintain regular exercise routines. This is why future missions to Mars will likely include specialized exercise equipment and carefully designed habitats to help astronauts stay healthy.
A common misconception is that Mars has no gravity at all. In reality, Mars has enough gravity to keep people, vehicles, and buildings firmly on its surface. Astronauts would not float around as they do inside spacecraft orbiting Earth. Instead, they would walk normally, although they would feel noticeably lighter and more agile.
Aanya Sharma is a science and technology writer with over 5 years of experience and 300+ published articles across leading digital platforms. She holds a Bachelor's degree in Science (Physics) from Delhi University, which grounds her writing in scientific literacy and gives her the ability to evaluate technical claims with accuracy. Her work has appeared on platforms including The Wire Science, Analytics India Magazine, and Digit.in, where she has covered artificial intelligence, space exploration, consumer technology, environmental science, and emerging tech policy. With a focus on accuracy and clarity, her writing makes complex scientific and technological developments accessible to readers without a technical background. Aanya has participated in science communication panels at events including the India Science Festival and has been recognised as a contributor to responsible tech journalism in India. She is an active member of the National Association of Science Writers (NASW) and maintains a public portfolio of her published work. Across all her work, her writing is grounded in verified sources and a commitment to editorial standards — delivering content that readers can rely on in a space where misinformation spreads easily.
