app.py

import streamlit as st

def convert_temperature(value, from_unit, to_unit):
    if from_unit == to_unit:
        return value
    elif from_unit == "Celsius" and to_unit == "Fahrenheit":
        return (value * 9/5) + 32
    elif from_unit == "Celsius" and to_unit == "Kelvin":
        return value + 273.15
    elif from_unit == "Fahrenheit" and to_unit == "Celsius":
        return (value - 32) * 5/9
    elif from_unit == "Fahrenheit" and to_unit == "Kelvin":
        return (value - 32) * 5/9 + 273.15
    elif from_unit == "Kelvin" and to_unit == "Celsius":
        return value - 273.15
    elif from_unit == "Kelvin" and to_unit == "Fahrenheit":
        return (value - 273.15) * 9/5 + 32

st.set_page_config(page_title="Temperature Converter", page_icon="🌡️", layout="centered")
st.title("🌡️ Temperature Converter")

st.markdown("""
    ### Convert temperatures between Celsius, Fahrenheit, and Kelvin with ease.
""")

value = st.number_input("Enter Temperature:", format="%.2f")
from_unit = st.selectbox("From Unit", ["Celsius", "Fahrenheit", "Kelvin"])
to_unit = st.selectbox("To Unit", ["Celsius", "Fahrenheit", "Kelvin"])

if st.button("Convert"):
    result = convert_temperature(value, from_unit, to_unit)
    st.success(f"Converted Temperature: {result:.2f} {to_unit}")

st.markdown("""
    **Instructions:**
    - Enter the temperature value.
    - Select the unit to convert from and the target unit.
    - Click the **Convert** button to see the result.
""")

st.markdown("""
    *Designed by ❤️ Shehroz Ali*
""")