diff --git a/src/interface/mod.rs b/src/interface/mod.rs
index c5acef2..9e57bb8 100644
--- a/src/interface/mod.rs
+++ b/src/interface/mod.rs
@@ -44,6 +44,25 @@ pub fn eval_with_context(string: &str, context: &Context) -> EvalexprResult<Valu
     tree::tokens_to_operator_tree(token::tokenize(string)?)?.eval_with_context(context)
 }
 
+/// Evaluate the given expression string with the given mutable context.
+///
+/// # Examples
+///
+/// ```rust
+/// use evalexpr::*;
+///
+/// let mut context = HashMapContext::new();
+/// context.set_value("one".into(), 1.into()).unwrap(); // Do proper error handling here
+/// context.set_value("two".into(), 2.into()).unwrap(); // Do proper error handling here
+/// context.set_value("three".into(), 3.into()).unwrap(); // Do proper error handling here
+/// assert_eq!(eval_with_context_mut("one + two + three", &mut context), Ok(Value::from(6)));
+/// ```
+///
+/// *See the [crate doc](index.html) for more examples and explanations of the expression format.*
+pub fn eval_with_context_mut(string: &str, context: &mut Context) -> EvalexprResult<Value> {
+    tree::tokens_to_operator_tree(token::tokenize(string)?)?.eval_with_context_mut(context)
+}
+
 /// Build the operator tree for the given expression string.
 ///
 /// The operator tree can later on be evaluated directly.
@@ -76,33 +95,21 @@ pub fn build_operator_tree(string: &str) -> EvalexprResult<Node> {
 ///
 /// *See the [crate doc](index.html) for more examples and explanations of the expression format.*
 pub fn eval_string(string: &str) -> EvalexprResult<String> {
-    match eval(string) {
-        Ok(Value::String(string)) => Ok(string),
-        Ok(value) => Err(EvalexprError::expected_string(value)),
-        Err(error) => Err(error),
-    }
+    eval_string_with_context(string, &EmptyContext)
 }
 
 /// Evaluate the given expression string into an integer.
 ///
 /// *See the [crate doc](index.html) for more examples and explanations of the expression format.*
 pub fn eval_int(string: &str) -> EvalexprResult<IntType> {
-    match eval(string) {
-        Ok(Value::Int(int)) => Ok(int),
-        Ok(value) => Err(EvalexprError::expected_int(value)),
-        Err(error) => Err(error),
-    }
+    eval_int_with_context(string, &EmptyContext)
 }
 
 /// Evaluate the given expression string into a float.
 ///
 /// *See the [crate doc](index.html) for more examples and explanations of the expression format.*
 pub fn eval_float(string: &str) -> EvalexprResult<FloatType> {
-    match eval(string) {
-        Ok(Value::Float(float)) => Ok(float),
-        Ok(value) => Err(EvalexprError::expected_float(value)),
-        Err(error) => Err(error),
-    }
+    eval_float_with_context(string, &EmptyContext)
 }
 
 /// Evaluate the given expression string into a float.
@@ -110,34 +117,21 @@ pub fn eval_float(string: &str) -> EvalexprResult<FloatType> {
 ///
 /// *See the [crate doc](index.html) for more examples and explanations of the expression format.*
 pub fn eval_number(string: &str) -> EvalexprResult<FloatType> {
-    match eval(string) {
-        Ok(Value::Float(float)) => Ok(float),
-        Ok(Value::Int(int)) => Ok(int as FloatType),
-        Ok(value) => Err(EvalexprError::expected_float(value)),
-        Err(error) => Err(error),
-    }
+    eval_number_with_context(string, &EmptyContext)
 }
 
 /// Evaluate the given expression string into a boolean.
 ///
 /// *See the [crate doc](index.html) for more examples and explanations of the expression format.*
 pub fn eval_boolean(string: &str) -> EvalexprResult<bool> {
-    match eval(string) {
-        Ok(Value::Boolean(boolean)) => Ok(boolean),
-        Ok(value) => Err(EvalexprError::expected_boolean(value)),
-        Err(error) => Err(error),
-    }
+    eval_boolean_with_context(string, &EmptyContext)
 }
 
 /// Evaluate the given expression string into a tuple.
 ///
 /// *See the [crate doc](index.html) for more examples and explanations of the expression format.*
 pub fn eval_tuple(string: &str) -> EvalexprResult<TupleType> {
-    match eval(string) {
-        Ok(Value::Tuple(tuple)) => Ok(tuple),
-        Ok(value) => Err(EvalexprError::expected_tuple(value)),
-        Err(error) => Err(error),
-    }
+    eval_tuple_with_context(string, &EmptyContext)
 }
 
 /// Evaluate the given expression string into a string with the given context.
@@ -207,3 +201,80 @@ pub fn eval_tuple_with_context(string: &str, context: &Context) -> EvalexprResul
         Err(error) => Err(error),
     }
 }
+
+/// Evaluate the given expression string into a string with the given mutable context.
+///
+/// *See the [crate doc](index.html) for more examples and explanations of the expression format.*
+pub fn eval_string_with_context_mut(string: &str, context: &mut Context) -> EvalexprResult<String> {
+    match eval_with_context_mut(string, context) {
+        Ok(Value::String(string)) => Ok(string),
+        Ok(value) => Err(EvalexprError::expected_string(value)),
+        Err(error) => Err(error),
+    }
+}
+
+/// Evaluate the given expression string into an integer with the given mutable context.
+///
+/// *See the [crate doc](index.html) for more examples and explanations of the expression format.*
+pub fn eval_int_with_context_mut(string: &str, context: &mut Context) -> EvalexprResult<IntType> {
+    match eval_with_context_mut(string, context) {
+        Ok(Value::Int(int)) => Ok(int),
+        Ok(value) => Err(EvalexprError::expected_int(value)),
+        Err(error) => Err(error),
+    }
+}
+
+/// Evaluate the given expression string into a float with the given mutable context.
+///
+/// *See the [crate doc](index.html) for more examples and explanations of the expression format.*
+pub fn eval_float_with_context_mut(
+    string: &str,
+    context: &mut Context,
+) -> EvalexprResult<FloatType> {
+    match eval_with_context_mut(string, context) {
+        Ok(Value::Float(float)) => Ok(float),
+        Ok(value) => Err(EvalexprError::expected_float(value)),
+        Err(error) => Err(error),
+    }
+}
+
+/// Evaluate the given expression string into a float with the given mutable context.
+/// If the result of the expression is an integer, it is silently converted into a float.
+///
+/// *See the [crate doc](index.html) for more examples and explanations of the expression format.*
+pub fn eval_number_with_context_mut(
+    string: &str,
+    context: &mut Context,
+) -> EvalexprResult<FloatType> {
+    match eval_with_context_mut(string, context) {
+        Ok(Value::Float(float)) => Ok(float),
+        Ok(Value::Int(int)) => Ok(int as FloatType),
+        Ok(value) => Err(EvalexprError::expected_float(value)),
+        Err(error) => Err(error),
+    }
+}
+
+/// Evaluate the given expression string into a boolean with the given mutable context.
+///
+/// *See the [crate doc](index.html) for more examples and explanations of the expression format.*
+pub fn eval_boolean_with_context_mut(string: &str, context: &mut Context) -> EvalexprResult<bool> {
+    match eval_with_context_mut(string, context) {
+        Ok(Value::Boolean(boolean)) => Ok(boolean),
+        Ok(value) => Err(EvalexprError::expected_boolean(value)),
+        Err(error) => Err(error),
+    }
+}
+
+/// Evaluate the given expression string into a tuple with the given mutable context.
+///
+/// *See the [crate doc](index.html) for more examples and explanations of the expression format.*
+pub fn eval_tuple_with_context_mut(
+    string: &str,
+    context: &mut Context,
+) -> EvalexprResult<TupleType> {
+    match eval_with_context_mut(string, context) {
+        Ok(Value::Tuple(tuple)) => Ok(tuple),
+        Ok(value) => Err(EvalexprError::expected_tuple(value)),
+        Err(error) => Err(error),
+    }
+}
diff --git a/tests/integration.rs b/tests/integration.rs
index a979188..28e0dd9 100644
--- a/tests/integration.rs
+++ b/tests/integration.rs
@@ -380,6 +380,7 @@ fn test_shortcut_functions() {
             .eval_int_with_context(&context),
         Ok(3)
     );
+    assert_eq!(build_operator_tree("3").unwrap().eval_number(), Ok(3.0));
     assert_eq!(
         build_operator_tree("3")
             .unwrap()
@@ -406,6 +407,60 @@ fn test_shortcut_functions() {
             .eval_tuple_with_context(&context),
         Ok(vec![Value::Int(3), Value::Int(3)])
     );
+
+    assert_eq!(
+        eval_string_with_context_mut("string", &mut context),
+        Ok("a string".to_string())
+    );
+    assert_eq!(eval_float_with_context_mut("3.3", &mut context), Ok(3.3));
+    assert_eq!(eval_int_with_context_mut("3", &mut context), Ok(3));
+    assert_eq!(eval_number_with_context_mut("3", &mut context), Ok(3.0));
+    assert_eq!(
+        eval_boolean_with_context_mut("true", &mut context),
+        Ok(true)
+    );
+    assert_eq!(
+        eval_tuple_with_context_mut("3,3", &mut context),
+        Ok(vec![Value::Int(3), Value::Int(3)])
+    );
+
+    assert_eq!(
+        build_operator_tree("string")
+            .unwrap()
+            .eval_string_with_context_mut(&mut context),
+        Ok("a string".to_string())
+    );
+    ;
+    assert_eq!(
+        build_operator_tree("3.3")
+            .unwrap()
+            .eval_float_with_context_mut(&mut context),
+        Ok(3.3)
+    );
+    assert_eq!(
+        build_operator_tree("3")
+            .unwrap()
+            .eval_int_with_context_mut(&mut context),
+        Ok(3)
+    );
+    assert_eq!(
+        build_operator_tree("3")
+            .unwrap()
+            .eval_number_with_context_mut(&mut context),
+        Ok(3.0)
+    );
+    assert_eq!(
+        build_operator_tree("true")
+            .unwrap()
+            .eval_boolean_with_context_mut(&mut context),
+        Ok(true)
+    );
+    assert_eq!(
+        build_operator_tree("3,3")
+            .unwrap()
+            .eval_tuple_with_context(&mut context),
+        Ok(vec![Value::Int(3), Value::Int(3)])
+    );
 }
 
 #[cfg(feature = "serde")]