The United States Constitution has a total of 27 amendments. Here is a brief overview of each amendment:

1. First Amendment: Protects the freedom of speech, religion, press, assembly, and petition.
2. Second Amendment: Guarantees the right to bear arms.
3. Third Amendment: Prohibits the quartering of soldiers in private homes during peacetime without the owner’s consent.
4. Fourth Amendment: Protects against unreasonable searches and seizures and requires a warrant based on probable cause.
5. Fifth Amendment: Provides various protections for individuals accused of crimes, including the right to remain silent and protection against double jeopardy.
6. Sixth Amendment: Guarantees the right to a fair and speedy trial, the right to legal counsel, and the right to confront witnesses.
7. Seventh Amendment: Ensures the right to a jury trial in civil cases.
8. Eighth Amendment: Prohibits cruel and unusual punishment and excessive bail or fines.
9. Ninth Amendment: States that the enumeration of certain rights in the Constitution does not deny or disparage other rights retained by the people.
10. Tenth Amendment: Reserves powers not delegated to the federal government to the states or the people.
11. Eleventh Amendment: Limits the ability of individuals to sue states in federal court.
12. Twelfth Amendment: Changes the procedure for electing the President and Vice President.
13. Thirteenth Amendment: Abolishes slavery and involuntary servitude, except as punishment for a crime.
14. Fourteenth Amendment: Defines citizenship, guarantees equal protection under the law, and prohibits states from denying due process or equal protection.
15. Fifteenth Amendment: Prohibits the denial of voting rights based on race, color, or previous condition of servitude.
16. Sixteenth Amendment: Authorizes Congress to levy an income tax.
17. Seventeenth Amendment: Establishes the direct election of U.S. Senators by the people of each state.
18. Eighteenth Amendment: Prohibited the manufacture, sale, and transportation of alcoholic beverages (later repealed by the 21st Amendment).
19. Nineteenth Amendment: Grants women the right to vote.
20. Twentieth Amendment: Sets the dates for the beginning and ending of the terms of the President and Congress.
21. Twenty-first Amendment: Repeals the 18th Amendment and allows for the regulation and taxation of alcoholic beverages.
22. Twenty-second Amendment: Limits the President to two terms in office.
23. Twenty-third Amendment: Grants residents of Washington, D.C. the right to vote in presidential elections.
24. Twenty-fourth Amendment: Prohibits the use of poll taxes in federal elections.
25. Twenty-fifth Amendment: Establishes procedures for presidential succession, filling a vacancy in the Vice Presidency, and addressing presidential disability.
26. Twenty-sixth Amendment: Lowers the voting age to 18.
27. Twenty-seventh Amendment: Restricts any law that changes the salaries of Senators and Representatives from taking effect until the next election of representatives.