Military spending is often measured in billions of dollars, with countries spending a record total of US$2.9 trillion in 2025. But this measurement doesn’t always reveal how much of a country’s resources are devoted to defense.
Some countries dedicate a massive amount of money for military expenditure, but compared to their gross domestic product (GDP) it actually takes a rather small piece of the pie.
So, which nations spend the most on defense relative to their GDP? Click on to find out.