diff --git a/src/uu/dd/src/parseargs.rs b/src/uu/dd/src/parseargs.rs
index bccf98f82..53fae1b4b 100644
--- a/src/uu/dd/src/parseargs.rs
+++ b/src/uu/dd/src/parseargs.rs
@@ -245,29 +245,29 @@ impl Parser {
             None => return Err(ParseError::UnrecognizedOperand(operand.to_string())),
             Some((k, v)) => match k {
                 "bs" => {
-                    let bs = self.parse_bytes(k, v)?;
+                    let bs = Self::parse_bytes(k, v)?;
                     self.ibs = bs;
                     self.obs = bs;
                 }
-                "cbs" => self.cbs = Some(self.parse_bytes(k, v)?),
+                "cbs" => self.cbs = Some(Self::parse_bytes(k, v)?),
                 "conv" => self.parse_conv_flags(v)?,
-                "count" => self.count = Some(self.parse_n(v)?),
-                "ibs" => self.ibs = self.parse_bytes(k, v)?,
+                "count" => self.count = Some(Self::parse_n(v)?),
+                "ibs" => self.ibs = Self::parse_bytes(k, v)?,
                 "if" => self.infile = Some(v.to_string()),
                 "iflag" => self.parse_input_flags(v)?,
-                "obs" => self.obs = self.parse_bytes(k, v)?,
+                "obs" => self.obs = Self::parse_bytes(k, v)?,
                 "of" => self.outfile = Some(v.to_string()),
                 "oflag" => self.parse_output_flags(v)?,
-                "seek" | "oseek" => self.seek = self.parse_n(v)?,
-                "skip" | "iseek" => self.skip = self.parse_n(v)?,
-                "status" => self.status = Some(self.parse_status_level(v)?),
+                "seek" | "oseek" => self.seek = Self::parse_n(v)?,
+                "skip" | "iseek" => self.skip = Self::parse_n(v)?,
+                "status" => self.status = Some(Self::parse_status_level(v)?),
                 _ => return Err(ParseError::UnrecognizedOperand(operand.to_string())),
             },
         }
         Ok(())
     }
 
-    fn parse_n(&self, val: &str) -> Result<Num, ParseError> {
+    fn parse_n(val: &str) -> Result<Num, ParseError> {
         let n = parse_bytes_with_opt_multiplier(val)?;
         Ok(if val.ends_with('B') {
             Num::Bytes(n)
@@ -276,13 +276,13 @@ impl Parser {
         })
     }
 
-    fn parse_bytes(&self, arg: &str, val: &str) -> Result<usize, ParseError> {
+    fn parse_bytes(arg: &str, val: &str) -> Result<usize, ParseError> {
         parse_bytes_with_opt_multiplier(val)?
             .try_into()
             .map_err(|_| ParseError::BsOutOfRange(arg.to_string()))
     }
 
-    fn parse_status_level(&self, val: &str) -> Result<StatusLevel, ParseError> {
+    fn parse_status_level(val: &str) -> Result<StatusLevel, ParseError> {
         match val {
             "none" => Ok(StatusLevel::None),
             "noxfer" => Ok(StatusLevel::Noxfer),
diff --git a/src/uucore/src/lib/parser/parse_size.rs b/src/uucore/src/lib/parser/parse_size.rs
index a93e0fe66..5f64afcd8 100644
--- a/src/uucore/src/lib/parser/parse_size.rs
+++ b/src/uucore/src/lib/parser/parse_size.rs
@@ -75,7 +75,7 @@ impl<'parser> Parser<'parser> {
             return Err(ParseSizeError::parse_failure(size));
         }
 
-        let number_system: NumberSystem = self.determine_number_system(size);
+        let number_system = Self::determine_number_system(size);
 
         // Split the size argument into numeric and unit parts
         // For example, if the argument is "123K", the numeric part is "123", and
@@ -156,16 +156,16 @@ impl<'parser> Parser<'parser> {
                 if numeric_string.is_empty() {
                     1
                 } else {
-                    self.parse_number(&numeric_string, 10, size)?
+                    Self::parse_number(&numeric_string, 10, size)?
                 }
             }
             NumberSystem::Octal => {
                 let trimmed_string = numeric_string.trim_start_matches('0');
-                self.parse_number(trimmed_string, 8, size)?
+                Self::parse_number(trimmed_string, 8, size)?
             }
             NumberSystem::Hexadecimal => {
                 let trimmed_string = numeric_string.trim_start_matches("0x");
-                self.parse_number(trimmed_string, 16, size)?
+                Self::parse_number(trimmed_string, 16, size)?
             }
         };
 
@@ -174,7 +174,7 @@ impl<'parser> Parser<'parser> {
             .ok_or_else(|| ParseSizeError::size_too_big(size))
     }
 
-    fn determine_number_system(&self, size: &str) -> NumberSystem {
+    fn determine_number_system(size: &str) -> NumberSystem {
         if size.len() <= 1 {
             return NumberSystem::Decimal;
         }
@@ -197,7 +197,6 @@ impl<'parser> Parser<'parser> {
     }
 
     fn parse_number(
-        &self,
         numeric_string: &str,
         radix: u32,
         original_size: &str,