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Both calculators run independently — change the inputs on either side to compare results.

Vector Dot Product Calculator

Compute the dot product of two 3D vectors as v1·v2 = v1x·v2x + v1y·v2y + v1z·v2z. Use it to measure projection, test orthogonality, or compute angles via the cosine formula.

Vector 1 - X component

Vector 1 - Y component

Vector 1 - Z component

Vector 2 - X component

V2 Y

V2 Z

Fill in the required fields to see your result.

Linear Algebra

Vector Projection Calculator

Calculate the scalar projection of 2D vector A onto vector B. Use this when you need to find how much of vector A lies in the direction of vector B.

Vector A - X component

Vector A - Y component

Vector B - X component

Vector B - Y component

Fill in the required fields to see your result.

Key differences

	Vector Dot Product Calculator	Vector Projection Calculator
Category	Linear Algebra	Linear Algebra
Inputs required	6	4
Result	Dot Product	Scalar Projection
What it does	Compute the dot product of two 3D vectors as v1·v2 = v1x·v2x + v1y·v2y + v1z·v2z. Use it to measure projection, test orthogonality, or compute angles via the cosine formula.	Calculate the scalar projection of 2D vector A onto vector B. Use this when you need to find how much of vector A lies in the direction of vector B.