PCB Trace Resistance

Trace DC resistance, IPC-2221 temperature rise, voltage drop, and copper loss

Length(L)

Width(w)

Copper Thickness Input

Copper Weight(oz)

Parallel Traces(n)

Input Voltage(Vin)

Current(I)

Voltage Drop Path

Layer

Conductor Temperature

Ambient Temperature(T_amb)

°C

Allowed Temperature Rise(ΔT_max)

°C

Report Resistance @ Reference Temp

Resistivity @ 20°C(ρ₂₀)

nΩ·m

Temp. Coefficient @ 20°C(α₂₀)

1/°C

Design looks good

Within Budget

14.48

Resistance (mΩ)

0.241

V-Drop (%) · 29 mV

0.854

Rise (°C) · 25.9 °C

Resistance @ Conductor Temp14.48mΩ

Resistance @ Ref (20 °C)14.16mΩ

Resistance per cm1.448mΩ/cm

Voltage Drop (trace only)28.96mV

Voltage Drop, % of Vin0.241%

Copper Loss (trace only)57.93mW

Temperature Rise (IPC-2221)0.854°C

Conductor Temperature25.9°C

Max Current @ Allowed Rise5.91A

Current Density (info)16.4A/mm²

Single-Trace Cross-Section0.1218mm²

Effective Cross-Section0.1218mm²

Created by Catlynn Nguyen & Jie Chai · 2026