USA Guide
The United States uses dozens of visa categories, but most first-time applicants only need to understand a handful. This overview groups them by purpose so you can identify the right category before starting a DS-160 form.
Most short-term visitors apply for a B1/B2 visa, which covers both business meetings (B1) and tourism, family visits or medical treatment (B2). These are usually issued as a single combined visa. Students apply for an F1 visa for academic programs or an M1 visa for vocational training. Temporary workers commonly use H1B (specialty occupation), L1 (intracompany transfer) or O1 (extraordinary ability) categories, depending on the job and sponsor.
If the goal is to live permanently in the US, the path usually runs through family sponsorship (IR/F categories), employment sponsorship (EB categories) or, for a limited number of countries, the Diversity Visa lottery. Immigrant visa cases are processed through the National Visa Center after a petition is approved, and generally take longer than nonimmigrant visas because of extra document and medical exam requirements.
Applicants sometimes apply for a B1/B2 visa while intending to study or work, which can lead to a refusal for misrepresenting intent. Others delay checking whether their employer or university is authorized to sponsor the correct category. Always match the visa purpose to your real plan, and get the underlying petition (I-20, I-129, I-130 or I-140, depending on category) approved before scheduling a visa interview where one is required.
Common questions
B1 is for business activities such as meetings, conferences or contract negotiations. B2 is for tourism, family visits or medical treatment. Consulates usually issue a single combined B1/B2 visa, and the officer decides the purpose at the port of entry based on your stated reason for travel.
A change of status is sometimes possible from inside the US, but it depends on the specific circumstances, timing and category. Entering on a B1/B2 visa with an existing plan to work without disclosing it can be treated as misrepresentation, so get guidance specific to your case before assuming a simple conversion is possible.
Nonimmigrant visas such as B1/B2 or F1 are typically processed in weeks to a few months once a visa interview slot is available. Immigrant visas often take a year or more because of petition processing, National Visa Center document review and mandatory medical exams, and family-based categories can take significantly longer depending on the relationship and country of chargeability.
