app.py

import streamlit as st

# Temperature Conversion Functions
def celsius_to_fahrenheit(celsius):
    return (celsius * 9/5) + 32

def celsius_to_kelvin(celsius):
    return celsius + 273.15

def fahrenheit_to_celsius(fahrenheit):
    return (fahrenheit - 32) * 5/9

def fahrenheit_to_kelvin(fahrenheit):
    return (fahrenheit - 32) * 5/9 + 273.15

def kelvin_to_celsius(kelvin):
    return kelvin - 273.15

def kelvin_to_fahrenheit(kelvin):
    return (kelvin - 273.15) * 9/5 + 32

# Streamlit App UI
st.set_page_config(page_title="Temperature Converter", layout="wide")
st.title("🌡️ Temperature Converter")

st.sidebar.title("Conversion Settings")
conversion_type = st.sidebar.selectbox(
    "Choose conversion type",
    ["Celsius to Fahrenheit", "Celsius to Kelvin",
     "Fahrenheit to Celsius", "Fahrenheit to Kelvin",
     "Kelvin to Celsius", "Kelvin to Fahrenheit"]
)

input_value = st.sidebar.number_input("Enter the temperature value", value=0.0)
st.sidebar.markdown("---")
st.sidebar.markdown("Developed with ❤️ using Streamlit")

# Columns for Input and Result
col1, col2 = st.columns(2)

with col1:
    st.header("Input Temperature")
    st.write(f"**{input_value}**")

with col2:
    st.header("Converted Temperature")
    if conversion_type == "Celsius to Fahrenheit":
        result = celsius_to_fahrenheit(input_value)
    elif conversion_type == "Celsius to Kelvin":
        result = celsius_to_kelvin(input_value)
    elif conversion_type == "Fahrenheit to Celsius":
        result = fahrenheit_to_celsius(input_value)
    elif conversion_type == "Fahrenheit to Kelvin":
        result = fahrenheit_to_kelvin(input_value)
    elif conversion_type == "Kelvin to Celsius":
        result = kelvin_to_celsius(input_value)
    elif conversion_type == "Kelvin to Fahrenheit":
        result = kelvin_to_fahrenheit(input_value)
    st.write(f"**{result:.2f}**")