# 1 milligram = 0.001 gram
# 1 centigram = 0.01 gram
# 1 decigram = 0.1 gram
# 1 kilogram = 1000 grams
# 1 gram = 1000 milligrams
# 1 ton = 2000 pounds
# 1 pound = 16 ounces

from tkinter import *

def from_kg():
    gram = float(e2_value.get())*1000
    pound = float(e2_value.get())*2.20462
    ounce = float(e2_value.get())*35.274
    t1.delete('1.0',END)
    t1.insert(END, gram)
    t2.delete("1.0", END)
    t2.insert(END, pound)
    t3.delete("1.0", END)
    t3.insert(END, ounce)


window = Tk()

e1 = Label(window, text = 'Input the weight in KG')
e2_value = StringVar()
e2 = Entry(window, textvariable = e2_value)
e3 = Label(window, text = "Gram")
e4 = Label(window, text = 'Pound')
e5 = Label(window, text = 'Ounce')

t1 = Text(window, height=5, width= 30)
t2 = Text(window, height=5, width=30)
t3 = Text(window, height=5, width=30)

b1 = Button(window, text='Convert', command=from_kg)

e1.grid(row=0, column=0)
e2.grid(row=0, column=1)
e3.grid(row=1, column=0)
e4.grid(row=1, column=1)
e5.grid(row=1, column=2)
t1.grid(row=2, column=0)
t2.grid(row=2, column=1)
t3.grid(row=2, column=2)
b1.grid(row=0, column=2)

window.mainloop()