PCB Impedance Calculator
Calculate PCB trace impedance for controlled impedance designs. Our free impedance calculator supports microstrip, stripline, and differential pair configurations. Use this PCB impedance calculator to optimize your high-speed PCB designs.
Impedance Calculator
Calculation Result
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Get PCB QuoteAbout PCB Impedance Calculation
Impedance control is critical for high-speed PCB designs. Our PCB impedance calculator helps you determine the characteristic impedance of your traces before manufacturing. Accurate impedance calculation ensures signal integrity in your PCB design.
Microstrip Impedance
Microstrip is the most common trace type for controlled impedance PCB design. The microstrip impedance depends on trace width, dielectric height, and the dielectric constant of the PCB material. Use our impedance calculator to optimize your microstrip trace dimensions.
Stripline Impedance
Stripline traces are embedded between two ground planes, providing better shielding for high-speed signals. The stripline impedance calculation considers the total dielectric thickness and trace geometry. Stripline is ideal for sensitive high-frequency PCB designs.
Differential Impedance
Differential pairs are used for high-speed interfaces like USB, HDMI, and PCIe. The differential impedance depends on both the single-ended impedance and the coupling between traces. Proper differential impedance control is essential for reliable high-speed PCB performance.
PCB Manufacturing Tolerance
Standard PCB manufacturing achieves ±10% impedance tolerance. For tighter ±5% tolerance, specify controlled impedance when ordering your PCB. Our PCB manufacturing service supports impedance control for all layer counts.
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