diff --git a/src/synthale/convert.py b/src/synthale/convert.py
index 2d468b0..05b8ed7 100644
--- a/src/synthale/convert.py
+++ b/src/synthale/convert.py
@@ -64,3 +64,23 @@ def pounds(kilograms, format_spec=''):
     for how to write `format_spec`.
     """
     return ('{:' + format_spec + '} lb').format(kilograms * 2.204623)
+
+
+def celsius(celsius, format_spec=''):
+    """Return a string with the unit appended.
+
+    See  the `Format Specification Mini-Language
+    <https://docs.python.org/3/library/string.html#format-specification-mini-language>_`
+    for how to write `format_spec`.
+    """
+    return ('{:' + format_spec + '} °C').format(celsius)
+
+
+def fahrenheit(celsius, format_spec=''):
+    """Convert celsius to fahrenheit and return a string with the unit appended.
+
+    See  the `Format Specification Mini-Language
+    <https://docs.python.org/3/library/string.html#format-specification-mini-language>_`
+    for how to write `format_spec`.
+    """
+    return ('{:' + format_spec + '} °F').format(celsius * 1.8 + 32)
diff --git a/tests/test_convert.py b/tests/test_convert.py
index f9f64ce..41394bd 100644
--- a/tests/test_convert.py
+++ b/tests/test_convert.py
@@ -1,13 +1,43 @@
 """Contains tests for the synthale.convert module."""
 
-from synthale.convert import liters, gallons
+from synthale import convert
 
 
 def test_liters():
     """Test liters function."""
-    assert liters(1, '.1f') == '1.0 L'
+    assert convert.liters(1, '.1f') == '1.0 L'
 
 
 def test_gallons():
     """Test gallons function."""
-    assert gallons(1, '.1f') == '0.3 gal'
+    assert convert.gallons(1, '.1f') == '0.3 gal'
+
+
+def test_kilograms():
+    """Test kilograms function."""
+    assert convert.kilograms(1, '.1f') == '1.0 kg'
+
+
+def test_grams():
+    """Test grams function."""
+    assert convert.grams(1, '.1f') == '1000.0 g'
+
+
+def test_ounces():
+    """Test ounces function."""
+    assert convert.ounces(1, '.1f') == '35.3 oz'
+
+
+def test_pounds():
+    """Test pounds function."""
+    assert convert.pounds(1, '.1f') == '2.2 lb'
+
+
+def test_celsius():
+    """Test celsius function."""
+    assert convert.celsius(1, '.1f') == '1.0 °C'
+
+
+def test_fahrenheit():
+    """Test fahrenheit function."""
+    assert convert.fahrenheit(1, '.1f') == '33.8 °F'