🔧 Free PCB Calculators

Instant results for trace width, impedance, via sizing, and cost estimation. No signup required.

Trace Width

Impedance

Via Size

Cost Estimator

PCB Trace Width Calculator

Current (Amps)

Copper Weight (oz)

Trace Length (mil)

Allowable Temp Rise (°C)

Layer

Recommended Trace Width

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Microstrip Impedance Calculator

Trace Width (mil)

Dielectric Height (mil)

Copper Weight (oz)

Dielectric Constant (Er)

FR-4 ≈ 4.3, Rogers ≈ 3.5

Characteristic Impedance (Z₀)

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Via Current Capacity Calculator

Via Drill (mil)

Min: 4mil (laser), 8mil (mechanical)

Via Pad (mil)

Board Thickness (mil)

1.6mm ≈ 62mil

Plating Thickness (oz)

Max Via Current

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PCB Cost Estimator

Layers

Quantity

Board Size X (mm)

Board Size Y (mm)

Copper Weight

Surface Finish

Estimated Cost

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