This eBook includes the text of the United States Constitution, Amendments, and Bill of Rights. Use it on your computer or take it with you on your smartphone, eReader, or tablet for easy mobile reference. This eBook is also printable.The Constitution of the United States is the supreme law of the United States of America. The first three Articles of the Constitution establish the rules and separate powers of the three branches of the federal government: a legislature, the bicameral Congress; an executive branch led by the President; and a federal judiciary headed by the Supreme Court. The last four Articles frame the principle of federalism. The Tenth Amendment confirms its federal characteristics.The Constitution was adopted on September 17, 1787, by the Constitutional Convention in Philadelphia, Pennsylvania, and ratified by conventions in eleven states. It went into effect on March 4, 1789. The first ten amendments are known as the Bill of Rights.
Also see our compilation of United States Historical Documents, which includes the Declaration of Independence, the Magna Carta, the Gettysburg Address, the Star Spangled Banner lyrics, and more.