diff --git a/python/temperature.py b/python/temperature.py
new file mode 100644
index 0000000..8bafaf5
--- /dev/null
+++ b/python/temperature.py
@@ -0,0 +1,13 @@
+ABSOLUTE_ZERO_C = -273.15
+
+
+def celsius_to_fahrenheit(celsius):
+    if celsius < ABSOLUTE_ZERO_C:
+        raise ValueError("below absolute zero")
+    return celsius * 9 / 5 + 32
+
+
+def celsius_to_kelvin(celsius):
+    if celsius < ABSOLUTE_ZERO_C:
+        raise ValueError("below absolute zero")
+    return celsius - ABSOLUTE_ZERO_C