Math
Quaternion Calculator
Multiply two quaternions (Hamilton product).
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Quaternions extend complex numbers to four dimensions and are used for 3D rotations in graphics and robotics.
The math behind it
The Hamilton product is non-commutative. It combines the scalar parts and the cross/dot products of the vector parts following i² = j² = k² = ijk = −1.
Worked Example
(1 + 2i + 3j + 4k)(5 + 6i + 7j + 8k) = −60 + 12i + 30j + 24k.
Frequently Asked Questions
Is quaternion multiplication commutative?
No — q₁q₂ generally differs from q₂q₁.
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