diff --git a/crates/nu-command/src/default_context.rs b/crates/nu-command/src/default_context.rs
index e8afbf5f08..29bea52935 100644
--- a/crates/nu-command/src/default_context.rs
+++ b/crates/nu-command/src/default_context.rs
@@ -419,6 +419,7 @@ pub fn create_default_context() -> EngineState {
             MathArcCosH,
             MathArcTanH,
             MathPi,
+            MathTau,
             MathEuler,
             MathLn,
         };
diff --git a/crates/nu-command/src/math/mod.rs b/crates/nu-command/src/math/mod.rs
index ed999b634d..ec7e76b557 100644
--- a/crates/nu-command/src/math/mod.rs
+++ b/crates/nu-command/src/math/mod.rs
@@ -29,6 +29,7 @@ mod stddev;
 mod sum;
 mod tan;
 mod tanh;
+mod tau;
 mod utils;
 mod variance;
 
@@ -65,5 +66,6 @@ pub use arctanh::SubCommand as MathArcTanH;
 
 pub use euler::SubCommand as MathEuler;
 pub use pi::SubCommand as MathPi;
+pub use tau::SubCommand as MathTau;
 
 pub use ln::SubCommand as MathLn;
diff --git a/crates/nu-command/src/math/tau.rs b/crates/nu-command/src/math/tau.rs
new file mode 100644
index 0000000000..9f351b3720
--- /dev/null
+++ b/crates/nu-command/src/math/tau.rs
@@ -0,0 +1,61 @@
+use nu_protocol::ast::Call;
+use nu_protocol::engine::{Command, EngineState, Stack};
+use nu_protocol::{Category, Example, IntoPipelineData, PipelineData, Signature, Type, Value};
+
+#[derive(Clone)]
+pub struct SubCommand;
+
+impl Command for SubCommand {
+    fn name(&self) -> &str {
+        "math tau"
+    }
+
+    fn signature(&self) -> Signature {
+        Signature::build("math tau")
+            .input_output_types(vec![(Type::Any, Type::Float)])
+            .category(Category::Math)
+    }
+
+    fn usage(&self) -> &str {
+        "Returns the mathematical constant τ."
+    }
+
+    fn search_terms(&self) -> Vec<&str> {
+        vec!["trigonometry", "constant"]
+    }
+
+    #[allow(clippy::approx_constant)]
+    fn examples(&self) -> Vec<Example> {
+        vec![Example {
+            example: "(math tau) / 2",
+            description: "Compare π and τ",
+            result: Some(Value::test_float(std::f64::consts::PI)),
+        }]
+    }
+
+    fn run(
+        &self,
+        _engine_state: &EngineState,
+        _stack: &mut Stack,
+        call: &Call,
+        _input: PipelineData,
+    ) -> Result<nu_protocol::PipelineData, nu_protocol::ShellError> {
+        Ok(Value::Float {
+            val: std::f64::consts::TAU,
+            span: call.head,
+        }
+        .into_pipeline_data())
+    }
+}
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn test_examples() {
+        use crate::test_examples;
+
+        test_examples(SubCommand {})
+    }
+}