Vector Magnitude Calculator |v| = √(x²+y²+z²). x y z |v| 5 Step-by-step with your numbers: 1. Values used: 2. x = 3 3. y = 4 4. z = 0 5. |v| = 5 Did we solve your problem today? 👍 Yes 👎 No Thanks for the feedback! Magnitude of vector. FAQ Unit? Divide each component by mag. Related calculators Unit Vector Calculator Normalize vector. Cross Product Calculator A × B for 3D.