diff --git a/examples/jsm/nodes/Nodes.js b/examples/jsm/nodes/Nodes.js
index 9e5088e1660377..813b2195905680 100644
--- a/examples/jsm/nodes/Nodes.js
+++ b/examples/jsm/nodes/Nodes.js
@@ -39,7 +39,7 @@ import * as NodeUtils from './core/NodeUtils.js';
 export { NodeUtils };
 
 // math
-export { default as MathNode, EPSILON, INFINITY, radians, degrees, exp, exp2, log, log2, sqrt, inverseSqrt, floor, ceil, normalize, fract, sin, cos, tan, asin, acos, atan, abs, sign, length, negate, oneMinus, dFdx, dFdy, round, reciprocal, trunc, fwidth, bitcast, atan2, min, max, mod, step, reflect, distance, difference, dot, cross, pow, pow2, pow3, pow4, transformDirection, mix, clamp, saturate, refract, smoothstep, faceForward, cbrt } from './math/MathNode.js';
+export { default as MathNode, EPSILON, INFINITY, radians, degrees, exp, exp2, log, log2, sqrt, inverseSqrt, floor, ceil, normalize, fract, sin, cos, tan, asin, acos, atan, abs, sign, length, lengthSq, negate, oneMinus, dFdx, dFdy, round, reciprocal, trunc, fwidth, bitcast, atan2, min, max, mod, step, reflect, distance, difference, dot, cross, pow, pow2, pow3, pow4, transformDirection, mix, clamp, saturate, refract, smoothstep, faceForward, cbrt } from './math/MathNode.js';
 export { parabola, gain, pcurve, sinc } from './math/MathNode.js';
 
 export { default as OperatorNode, add, sub, mul, div, remainder, equal, lessThan, greaterThan, lessThanEqual, greaterThanEqual, and, or, xor, bitAnd, bitOr, bitXor, shiftLeft, shiftRight } from './math/OperatorNode.js';
diff --git a/examples/jsm/nodes/math/MathNode.js b/examples/jsm/nodes/math/MathNode.js
index 93141e178c75ca..116841e69e1ad7 100644
--- a/examples/jsm/nodes/math/MathNode.js
+++ b/examples/jsm/nodes/math/MathNode.js
@@ -310,6 +310,7 @@ export const pcurve = ( x, a, b ) => pow( div( pow( x, a ), add( pow( x, a ), po
 export const sinc = ( x, k ) => sin( PI.mul( k.mul( x ).sub( 1.0 ) ) ).div( PI.mul( k.mul( x ).sub( 1.0 ) ) );
 
 export const cbrt = ( a ) => mul( sign( a ), pow( abs( a ), 1.0 / 3.0 ) );
+export const lengthSq = ( a ) => dot( a, a );
 export const mix = nodeProxy( MathNode, MathNode.MIX );
 export const clamp = ( value, low = 0, high = 1 ) => nodeObject( new MathNode( MathNode.CLAMP, nodeObject( value ), nodeObject( low ), nodeObject( high ) ) );
 export const saturate = ( value ) => clamp( value );
@@ -341,6 +342,7 @@ addNodeElement( 'atan', atan );
 addNodeElement( 'abs', abs );
 addNodeElement( 'sign', sign );
 addNodeElement( 'length', length );
+addNodeElement( 'lengthSq', lengthSq );
 addNodeElement( 'negate', negate );
 addNodeElement( 'oneMinus', oneMinus );
 addNodeElement( 'dFdx', dFdx );