Contact Sales & After-Sales Service

Contact & Quotation

  • Inquire: Call 0086-755-23203480, or reach out via the form below/your sales contact to discuss our design, manufacturing, and assembly capabilities.
  • Quote: Email your PCB files to Sales@pcbsync.com (Preferred for large files) or submit online. We will contact you promptly. Please ensure your email is correct.
Drag & Drop Files, Choose Files to Upload You can upload up to 3 files.

Notes:
For PCB fabrication, we require PCB design file in Gerber RS-274X format (most preferred), *.PCB/DDB (Protel, inform your program version) format or *.BRD (Eagle) format. For PCB assembly, we require PCB design file in above mentioned format, drilling file and BOM. Click to download BOM template To avoid file missing, please include all files into one folder and compress it into .zip or .rar format.

PCB Unit Converter - PCBSync Engineering Tools

PCB Unit Converter

PCBSync Engineering Tools

Mils ↔ Millimeters
PCB trace width, spacing, drill sizes
Mils mil / thou
Millimeters mm
Common values:
1 mil = 0.0254 mm = 25.4 μm
Copper Weight ↔ Thickness
oz/ft² to μm / mils
Copper Weight oz/ft²
Thickness μm
Standard copper weights:
½ oz
17.5 μm
1 oz
35 μm
2 oz
70 μm
3 oz
105 μm
1 oz/ft² = 35 μm = 1.38 mils
Inches ↔ Millimeters
Board dimensions, panel sizes
Inches in
Millimeters mm
ALSO EQUALS
Mils 1000
Centimeters 2.54
Microns ↔ Mils
Plating thickness, fine features
Microns μm
Mils mil
1 μm = 0.03937 mils | 1 mil = 25.4 μm
Area: mm² ↔ mil²
Pad area, via annular ring
Square Millimeters mm²
Square Mils mil²
CIRCULAR MIL (WIRE GAUGE)
Circular Mils 1974
AWG Equivalent ~20
Temperature: °C ↔ °F
Reflow profiles, Tg ratings
Celsius °C
Fahrenheit °F
PCB Temperatures:
Quick Reference Tables
Common Trace Widths
MILS MM TYPICAL USE
30.076Fine pitch, HDI
40.102Standard min width
50.127General signal
60.152Standard signal
80.203Power traces
100.254Power, ground
120.305High current
200.508Very high current
Copper Weight Reference
OZ/FT² μm MILS APPLICATION
½17.50.69Inner layers
1351.38Standard PCB
2702.76Power boards
31054.13High current
41405.51Heavy copper
62108.27Extreme copper
Standard Drill Sizes
MILS MM TYPE
40.10Micro via (laser)
60.15HDI via
80.20Small via
100.25Standard via
120.30Standard via
160.40Power via
240.60Through-hole
401.00Mounting hole
Value copied to clipboard!

Contact Sales & After-Sales Service

Contact & Quotation

  • Inquire: Call 0086-755-23203480, or reach out via the form below/your sales contact to discuss our design, manufacturing, and assembly capabilities.

  • Quote: Email your PCB files to Sales@pcbsync.com (Preferred for large files) or submit online. We will contact you promptly. Please ensure your email is correct.

Drag & Drop Files, Choose Files to Upload You can upload up to 3 files.

Notes:
For PCB fabrication, we require PCB design file in Gerber RS-274X format (most preferred), *.PCB/DDB (Protel, inform your program version) format or *.BRD (Eagle) format. For PCB assembly, we require PCB design file in above mentioned format, drilling file and BOM. Click to download BOM template To avoid file missing, please include all files into one folder and compress it into .zip or .rar format.