Stockholm International Peace Research Institute: "Gives the annual military spending of countries since 1949, allowing comparison of countries’ military spending in local currency at current prices; in US dollars at constant prices and exchange rates; as a share of GDP; per capita and as a share of government spending."

This database can be queried to answer questions such as the ratio of military spending to gross domestic product (GDP) for a given country.

"Side-by-side comparison showcasing the relative fighting strengths of Ukraine and Russia for the year 2022."

The finalized Global Firepower ranking below utilizes over 50 individual factors to determine a given nation's PowerIndex ('PwrIndx') score with categories ranging from military might and financials to logistical capability and geography.