diff --git a/Klassen.py b/Klassen.py
new file mode 100644
index 0000000..a3790dd
--- /dev/null
+++ b/Klassen.py
@@ -0,0 +1,28 @@
+class Formel:
+    def __init__(self, name, a=Groesse(None, None, True, 0), b=Groesse(None, None, True, 0),
+                 c=Groesse(None, None, True, 0), d=Groesse(None, None, True, 0), e=Groesse(None, None, True, 0),
+                 f=Groesse(None, None, True, 0), g=Groesse(None, None, True, 0), z=Groesse(None, None, True, 0),
+                 y=Groesse(None, None, True, 0), x=Groesse(None, None, True, 0)):
+        self.a = a
+        self.b = b
+        self.c = c
+        self.d = d
+        self.e = e
+        self.f = f
+        self.g = g
+        self.z = z
+        self.y = y
+        self.x = x
+        self.name = name
+        self.liste = []
+        for var in [self.a, self.b, self.c]:
+            if var.konst is False:
+                self.liste.append(var)
+
+
+class Groesse:
+    def __init__(self, formelsymbol, einheit, konst, wert=None):
+        self.formelsymbol = formelsymbol
+        self.einheit = einheit
+        self.wert = wert
+        self.konst = konst
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