Tip Calculator
    
    
    
    Tip Calculation Formula
    Tip = Bill Amount × (Tip Percentage / 100)
    Standard Tipping Amounts in the US
    
        - Restaurants: 15-20% of the bill before tax for sit-down service.
 
        - Bars: $1-2 per drink or 15-20% of the total tab.
 
        - Food Delivery: 15-20% of the total bill; more if weather conditions are poor and usually $5 minimum.
 
        - Takeout: 10% is appreciated, especially if the order is large, complex, or requires special handling.
 
        - Hotel Staff: $1-5 per bag for porters, $2-5 per day for housekeeping, and $2-10 for concierge services.
 
        - Hairdressers and Barbers: 15-20% of the total service cost.
 
        - Taxi & Uber Drivers: 10-15% of the fare, plus an extra $1-2 if they help with luggage.