Eurorack HP Calculator

This Eurorack Calculator helps you quickly convert between HP (Horizontal Pitch), millimeters, and inches when designing or building Eurorack modular synthesizer cases. 

Eurorack HP Calculator

HP
mm
mm
in
Industry standard rack size
Presets

How to Use the Eurorack HP Calculator ?

You can enter a value into any of these fields:

  • HP (Horizontal Pitch)
  • Millimeters
  • Inches

The calculator will automatically convert the value into all other units instantly. Whether you are planning a DIY case or checking module dimensions, this HP calculator provides both exact measurements and practical production dimensions.

Millimeters (exact) & Inches

This field shows the mathematically exact Eurorack conversion using the official standard :
1 HP = 5.08 mm
1 inch = 25.4 mm

Millimeters (rounded up)

This field shows the practical production dimension. In real-world Eurorack case production, profile lengths are typically rounded up slightly to ensure proper fit and assembly clearance.

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