diff --git a/src/parse.rs b/src/parse.rs
index 119a420..2faef00 100644
--- a/src/parse.rs
+++ b/src/parse.rs
@@ -145,9 +145,18 @@ fn parse_unit(input: String) -> Result<NonMetric, ParseError> {
 		"acres" => Ok(NonMetric::Acre),
 		"ac" => Ok(NonMetric::Acre),
 
+		"square mile" => Ok(NonMetric::SquareMile),
+		"square miles" => Ok(NonMetric::SquareMile),
+		"square mi" => Ok(NonMetric::SquareMile),
+		"sq mile" => Ok(NonMetric::SquareMile),
+		"sq miles" => Ok(NonMetric::SquareMile),
+		"sq mi" => Ok(NonMetric::SquareMile),
 		"mile²" => Ok(NonMetric::SquareMile),
 		"miles²" => Ok(NonMetric::SquareMile),
 		"mi²" => Ok(NonMetric::SquareMile),
+		"mile^2" => Ok(NonMetric::SquareMile),
+		"miles^2" => Ok(NonMetric::SquareMile),
+		"mi^2" => Ok(NonMetric::SquareMile),
 
 		_ => Err(ParseError::UnknownUnit(input)),
 	}
@@ -343,9 +352,18 @@ mod test {
 		assert_eq!(parse_unit("acres".to_string()), Ok(NonMetric::Acre));
 		assert_eq!(parse_unit("ac".to_string()), Ok(NonMetric::Acre));
 
+		assert_eq!(parse_unit("square mile".to_string()), Ok(NonMetric::SquareMile));
+		assert_eq!(parse_unit("square miles".to_string()), Ok(NonMetric::SquareMile));
+		assert_eq!(parse_unit("square mi".to_string()), Ok(NonMetric::SquareMile));
+		assert_eq!(parse_unit("sq mile".to_string()), Ok(NonMetric::SquareMile));
+		assert_eq!(parse_unit("sq miles".to_string()), Ok(NonMetric::SquareMile));
+		assert_eq!(parse_unit("sq mi".to_string()), Ok(NonMetric::SquareMile));
 		assert_eq!(parse_unit("mile²".to_string()), Ok(NonMetric::SquareMile));
 		assert_eq!(parse_unit("miles²".to_string()), Ok(NonMetric::SquareMile));
 		assert_eq!(parse_unit("mi²".to_string()), Ok(NonMetric::SquareMile));
+		assert_eq!(parse_unit("mile^2".to_string()), Ok(NonMetric::SquareMile));
+		assert_eq!(parse_unit("miles^2".to_string()), Ok(NonMetric::SquareMile));
+		assert_eq!(parse_unit("mi^2".to_string()), Ok(NonMetric::SquareMile));
 
 		// Unknown unit
 		assert_eq!(parse_unit("hutenosa".to_string()), Err(ParseError::UnknownUnit("hutenosa".to_string())));