Question 1

Where does your data come from?

Accepted Answer

We compile data from official government sources including the Department of Defense (DoD), Congressional Budget Office (CBO), Stockholm International Peace Research Institute (SIPRI), Brown University Costs of War Project, World Bank, and the International Institute for Strategic Studies (IISS).

Question 2

How often is the data updated?

Accepted Answer

We update our data as new official reports and assessments are published. Major datasets like SIPRI's military expenditure database are updated annually, while US aid tracking and conflict data are updated monthly or as new congressional packages are approved.

Question 3

How much does the US spend on military per day?

Accepted Answer

The United States spends approximately $2.4 billion per day on defense, based on the FY2025 defense budget of $886 billion. Including all national security costs (VA, DHS, intelligence), the daily figure exceeds $3.8 billion.

Question 4

What is the total cost of the War on Terror?

Accepted Answer

According to Brown University's Costs of War Project, the post-9/11 wars have cost over $8 trillion in direct spending and obligations through 2025, including future veterans' care and interest on borrowing.

Question 5

How much has the US spent on Ukraine aid?

Accepted Answer

Since February 2022, the United States has committed over $175 billion in total aid to Ukraine, including military assistance, economic support, and humanitarian aid across multiple congressional authorization packages.

Question 6

How much would a war with Iran cost?

Accepted Answer

Military analysts estimate a potential US-Iran conflict could cost $1.5-2.8 trillion over a decade, comparable to or exceeding the Iraq war's total cost, due to Iran's larger military, difficult terrain, and potential for regional escalation.

Question 7

Which country spends the most on military?

Accepted Answer

The United States is by far the largest military spender at $886 billion (FY2025), accounting for approximately 37% of global military spending. China is second at an estimated $296 billion, though actual spending may be significantly higher.

Question 8

How much does the world spend on military?

Accepted Answer

Global military spending reached a record $2.4 trillion in 2024, representing about 2.3% of global GDP. Spending has increased year-over-year driven by the Ukraine conflict, Indo-Pacific tensions, and Middle East instability.

Question 9

How many active conflicts exist worldwide?

Accepted Answer

As of 2025, there are approximately 110 armed conflicts worldwide, including major wars in Ukraine, Sudan, Myanmar, and the Middle East, plus dozens of lower-intensity insurgencies and civil conflicts.

Question 10

What is the cost of nuclear weapons globally?

Accepted Answer

The nine nuclear-armed states spend a combined $100+ billion annually on nuclear weapons programs. The US alone plans to spend $1.7 trillion on nuclear modernization over the next 30 years.

Question 11

Are you affiliated with any government or political organization?

Accepted Answer

No. War Cost Tracker is an independent research project. We are not affiliated with any government, political party, military organization, or defense contractor. Our goal is to provide accurate, accessible data about the costs of war.

Question 12

Can I use your data for research or reporting?

Accepted Answer

Yes. All data on this site is compiled from publicly available sources. We encourage citation and link back to our analysis. For academic or journalistic use, please reference both our site and the original data sources listed on our methodology page.

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