Free Vector Dot Product & Angle Calculator (2D & 3D) Online
Calculate dot product (a · b), vector magnitudes (|a|, |b|), unit vectors, and angle θ between vectors in 2D and 3D space. — 100% free online utility, zero sign-up, zero paywalls, and private client-side processing.
How It Works
Select Dimension
Choose 2D [x, y] or 3D [x, y, z].
Enter Vector Components
Input scalar coordinates for Vector A and Vector B.
Calculate Dot Product
Evaluates a · b = a₁b₁ + a₂b₂ (+ a₃b₃).
Inspect Angle Between Vectors
Formula: cos(θ) = (a · b) / (|a| × |b|).
Frequently Asked Questions
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