View the ratio of federal debt to the economic output of the U.S., which can indicate economic health and the sustainability of government borrowing.

Gross Federal Debt as Percent of Gross Domestic Product (GFDGDPA188S) (https://fred.stlouisfed.org/series/GFDGDPA188S) was first constructed by the Federal Reserve Bank of St. Louis in January 2013. It is calculated using Gross Federal Debt (FYGFD) (https://fred.stlouisfed.org/series/FYGFD) and Gross Domestic Product (GDPA) (https://fred.stlouisfed.org/series/GDPA): GFDGDPA188S = (FYGFD/GDPA)*100

Federal Debt Held by the Public as Percent of Gross Domestic Product (FYGFGDQ188S) (https://fred.stlouisfed.org/series/FYGFGDQ188S) was first constructed by the Federal Reserve Bank of St. Louis in October 2012. It is calculated using Federal Debt Held by the Public (FYGFDPUN) (https://fred.stlouisfed.org/series/FYGFDPUN) and Gross Domestic Product, 1 Decimal (GDP) (https://fred.stlouisfed.org/series/GDP): FYGFGDQ188S = ((FYGFDPUN/1000)/GDP)*100 FYGFDPUN/1000 transforms FYGFDPUN from millions of dollars to billions of dollars.

Gross Federal Debt Held by the Public as Percent of Gross Domestic Product (FYPUGDA188S) (https://fred.stlouisfed.org/series/FYPUGDA188S) was first constructed by the Federal Reserve Bank of St. Louis in January 2013. It is calculated using Gross Federal Debt (FYGFDPUB) (https://fred.stlouisfed.org/series/FYGFDPUB) and Gross Domestic Product (GDPA) (https://fred.stlouisfed.org/series/GDPA): FYPUGDA188S = (FYGFDPUB/GDPA)*100

Federal Debt Held by Foreign & International Investors as Percent of Gross Domestic Product (HBFIGDQ188S) (https://fred.stlouisfed.org/series/HBFIGDQ188S) was first constructed by the Federal Reserve Bank of St. Louis in October 2012. It is calculated using Federal Debt Held by Foreign & International Investors (FDHBFIN) (https://fred.stlouisfed.org/series/FDHBFIN) and Gross Domestic Product, 1 Decimal (GDP) (https://fred.stlouisfed.org/series/GDP): (FDHBFIN/GDP)*100

Federal Debt Held by Federal Reserve Banks as Percent of Gross Domestic Product (HBFRGDQ188S) (https://fred.stlouisfed.org/series/HBFRGDQ188S) was first constructed by the Federal Reserve Bank of St. Louis in October 2012. It is calculated using Federal Debt Held by Federal Reserve Banks (FDHBFRBN) (https://fred.stlouisfed.org/series/FDHBFRBN) and Gross Domestic Product, 1 Decimal (GDP) (https://fred.stlouisfed.org/series/GDP): HBFRGDQ188S = (FDHBFRBN/GDP)*100

Federal Debt Held by Private Investors as Percent of Gross Domestic Product (HBPIGDQ188S) (https://fred.stlouisfed.org/series/HBPIGDQ188S) was first constructed by the Federal Reserve Bank of St. Louis in October 2012. It is calculated using Federal Debt Held by Private Investors (FDHBPIN) (https://fred.stlouisfed.org/series/FDHBPIN) and Gross Domestic Product, 1 Decimal (GDP) (https://fred.stlouisfed.org/series/GDP): HBPIGDQ188S = (FDHBPIN/GDP)*100

Federal Debt Held by Agencies & Trusts as Percent of Gross Domestic Product (HBATGDQ188S) (https://fred.stlouisfed.org/series/HBATGDQ188S) was first constructed by the Federal Reserve Bank of St. Louis in October 2012. It is calculated using Federal Debt Held by Agencies & Trusts (FDHBATN) (https://fred.stlouisfed.org/series/FDHBATN) and Gross Domestic Product, 1 Decimal (GDP) (https://fred.stlouisfed.org/series/GDP): HBATGDQ188S = ((FDHBATN/1000)/GDP)*100 FDHBATN/1000 transforms FDHBATN from millions of dollars to billions of dollars.