PCB trace impedance
Single-ended microstrip and symmetric stripline estimates.
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Free calculators
20 calculators for circuits, PCB geometry, and mathematics. Each includes an example, calculation steps, and assumptions.
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Cable & trace inductance
Straight wire, two-wire cable, coax, and PCB trace estimates.
Open calculatorResistor-divider tolerance
Nominal voltage, tolerance bounds, and divider current.
Open calculatorDC hold-up capacitor
Ideal capacitance for a constant-power load.
Open calculatorADC settling time
RC settling to a half-LSB error target.
Open calculatorPCB trace resistance
DC resistance, voltage drop, and copper loss.
Open calculatorVia resistance & parallel vias
Plated-barrel resistance and ideal current sharing.
Open calculatorSolder stencil aperture
Aperture ratios and estimated paste volume.
Open calculatorGaussian elimination / RREF
Exact fractions and a full row-operation trace.
Open calculatorEigenvalues & eigenvectors
Real or complex eigenpairs with residual checks.
Open calculatorEuler & Runge–Kutta numerical solver
Euler and RK4 iterations, tables, and plots.
Open calculatorMatrix operations
Calculate with exact fractions.
Open calculatorLinear systems Ax = b
Classify every solution.
Open calculatorFirst-order linear ODE
Solve a constant-coefficient model.
Open calculatorSecond-order homogeneous ODE
Follow the characteristic roots.
Open calculatorBisection root finder
Keep the root bracketed.
Open calculatorNewton–Raphson root finder
Use the derivative. Check convergence.
Open calculatorSecant root finder
Find a root without a derivative.
Open calculatorNumerical integration
Compare four quadrature rules.
Open calculatorPolynomial interpolation
Connect your data with a polynomial.
Open calculatorNo tools match your search. Try “resistance” or “matrix”.