Quantum Calculator & Quantum Math Tools
A free, browser-based quantum calculator for common quantum information tasks — parse Dirac (bra-ket) notation, compute quantum matrices like the reduced density matrix, run a Schmidt decomposition to measure entanglement, and visualize a qubit on the Bloch sphere. Everything runs client-side; nothing you enter leaves your browser.
Dirac Notation CalculatorParse a bra-ket (Dirac notation) expression into its state vector, density matrix, and LaTeX.Partial Trace CalculatorA quantum matrix calculator — reduce a bipartite state to a subsystem’s reduced density matrix.Schmidt Decomposition CalculatorA quantum entanglement calculator — find Schmidt coefficients, modes, and entanglement entropy of a bipartite state.Bloch Sphere CalculatorVisualize a single-qubit quantum state as a point on the interactive 3D Bloch sphere.