How many months of passport validity does United States require?

General 6-month minimum validity rule (unless exempt under the Six-Month Club). Requires a valid B1/B2 visa or ESTA authorization. (Minimum recommended validity: 6 months).

What power plug types and voltage are used in United States?

In United States (Washington, D.C.), power sockets are Type A & B (2 flat parallel pins + ground) with 120 V voltage and 60 Hz frequency.

What is the official currency and tipping custom in United States?

The official currency is US Dollar (USD, symbol $). Tipping custom: Expected at table-service restaurants: 18% to 22% before tax.

What are the emergency numbers and is tap water safe in United States?

Calling code: +1. Police: 911, Ambulance: 911, Fire: 911. Tap water safety: Tap water is safe to drink in most cities.

Travel guide to United States (Washington, D.C.) — Passport validity, power plugs, currency & emergency numbers

Plan your trip to United States with Viajadorum. Verified practical travel intelligence:

Capital: Washington, D.C.
Official language: English (Spanish widely spoken in FL, NY, TX, CA)
Currency: US Dollar (USD · $)
Passport validity & visa rule: General 6-month minimum validity rule (unless exempt under the Six-Month Club). Requires a valid B1/B2 visa or ESTA authorization. (Min. 6 months)
Power plugs & electricity: Type A & B (2 flat parallel pins + ground) · 120 V (60 Hz)
Emergency numbers: Police: 911 | Ambulance: 911 | Fire: 911
International calling code: +1
Tap water safety: Tap water is safe to drink in most cities.
Tipping custom: Expected at table-service restaurants: 18% to 22% before tax.
Driving side: Right