I want to make a mini project on python using Tkinter or Turtle for the GUI and want to create a Utility Calculator

Project Title: Utility Calculator

Project Description: The Utility Calculator is a Python-based application with a Tkinter GUI, offering functionalities that are mentioned below.
Features:-
* Normal Calculator
* Temperature Converter (Celsius, Fahrenheit and Kelvin)
* BMI Calculator
* Percentage Calculator
* Time Zone Converter
* Age Calculator
* Loan Calculator
* Fuel Efficiency Calculator
* Number System Converter (decimal, binary, Octal, and hexadecimal)
* Random Number Generator
* Currency Converter
* Unit Conversion (e.g., length, speed, time, etc.)

Project Scope: Create an all-in-one utility tool that enables users to perform diverse calculations and conversions efficiently with a user-friendly interface.

I will need the full source code.