NATO Military Spending 2024: $1,515.0bn Total

NATO's 32 member states spent a combined $1,515.0bn on defense in 2024, equal to 56.8% of world military spending, based on our calculation from SIPRI country-level data covering all 32 current members.

01 How much did NATO spend on defense in 2024?

In 2024, NATO's 32 member countries together spent $1,515.0bn on their militaries, measured in constant 2024 US dollars. This figure is not a number SIPRI itself publishes as a bloc total — SIPRI reports military expenditure country by country. The $1,515.0bn total shown here is our own sum of all 32 current NATO members' 2024 figures from that country-level dataset, so the reported total is fully traceable back to national data rather than to a third-party alliance estimate.

Coverage is complete for this year: all 32 of NATO's current members have 2024 data included in the total, with none missing or excluded. For a country-by-country breakdown of any single member's spending, see NATO defense spending.

02 NATO's $1,515.0bn total: how it's calculated

The $1,515.0bn figure is arrived at by adding together the 2024 military expenditure of each of NATO's 32 member states, using SIPRI's constant 2024 US dollar series so that every member's contribution is expressed in the same price basis before summation. Because 2024 is a completed data year rather than a projection, none of the underlying figures are estimates.

Treating the total this way — as an aggregation rather than a single official statistic — is what allows it to be audited: any reader can, in principle, trace the $1,515.0bn back to the 32 national figures that compose it, rather than accepting a bloc-level number on trust.

03 NATO share of world military spending: 56.8%

NATO's $1,515.0bn total represents 56.8% of world military spending in 2024. In other words, just under three-fifths of everything spent on defense globally in 2024 came from the 32 countries in the alliance.

This share describes NATO's aggregate weight in global military expenditure; it says nothing about the distribution of spending within the alliance, which varies widely between members.

04 Coverage and methodology notes

A few points matter for interpreting this figure correctly:

• Membership basis — the total uses NATO's current 32-member roster applied to 2024, not the roster that existed in any earlier year.
• Currency and price basis — all figures are in SIPRI constant 2024 US dollars, which removes the effect of inflation and exchange-rate movement between members' figures.
• No missing members — 2024 data is available for all 32 current members, so the total requires no estimation to fill gaps.
• Not a SIPRI-published figure — SIPRI does not itself publish a NATO bloc total; the $1,515.0bn is our summation of its country-level data.

Source: SIPRI Military Expenditure Database (sipri.org/databases/milex). Data as of 2026-08-20.