Python Tip Calculator with GUI (Tkinter)

💰 Python Tip Calculator with GUI

Level: Beginner
Tech used: Python, Tkinter

📋 What You’ll Build

A basic tip calculator app where users enter the bill amount and tip percentage, then see the calculated total amount. This is a great introduction to GUI development in Python using Tkinter.

🧰 What You Need

• Python installed (3.x)
• tkinter library (comes preinstalled with Python)
• A code editor like VS Code or IDLE

💻 Sample Python Code

import tkinter as tk

def calculate_tip():
    try:
        bill = float(bill_entry.get())
        tip_percent = float(tip_entry.get())
        tip = bill * (tip_percent / 100)
        total = bill + tip
        result.set(f"Tip: ${tip:.2f} | Total: ${total:.2f}")
    except ValueError:
        result.set("Please enter valid numbers.")

root = tk.Tk()
root.title("Tip Calculator")

tk.Label(root, text="Bill Amount ($):").pack()
bill_entry = tk.Entry(root)
bill_entry.pack()

tk.Label(root, text="Tip Percentage (%):").pack()
tip_entry = tk.Entry(root)
tip_entry.pack()

tk.Button(root, text="Calculate", command=calculate_tip).pack()
result = tk.StringVar()
tk.Label(root, textvariable=result).pack()

root.mainloop()
  

🎯 What You’ll Learn

• How to create GUI forms in Python
• Handling user input and data validation
• Basic arithmetic in real-world apps

📚 Recommended Next Steps

Enhance your app with features like split bill, dark mode, or a reset button. You can also convert it into a web version using Flask or Django later.

📎 Resources

• Tkinter Documentation
• GeeksForGeeks: Tip Calculator Tutorial

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