▸ processconvert
Stress

hPatoN/mm²

Convert hectopascals (stress) (hPa) to newtons per square millimetre (stress) (N/mm²).

Factor1 hPa = 0.0001 N/mm²

Converter

hPa

Accepts numbers or expressions, e.g. 150 + 14.7

Result
1N/mm²

Rendered to 6 significant figures.

Formula

Formula
N/mm² = hPa × 0.0001

Multiply any value in hectopascals (stress) by 0.0001 to obtain the value in newtons per square millimetre (stress).

Worked example

Convert 10000 hPa to N/mm².

  1. 01Start with 10000 hPa.
  2. 02Multiply by the conversion factor: 10000 × 0.0001 = 1 N/mm².
Result10000 hPa = 1 N/mm²

Conversion table

hPaN/mm²
10.0001
20.0002
50.0005
100.001
200.002
500.005
1000.01
2000.02
5000.05
10000.1

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from hPa to N/mm²?
1 hPa equals 0.0001 N/mm². To convert, multiply the value in hectopascals (stress) by 0.0001.
How do I convert 1 hPa to N/mm²?
1 hPa = 0.0001 N/mm². For any value, multiply by 0.0001.
How do I convert N/mm² back to hPa?
Divide by the same factor — or equivalently, multiply by 10000. So 1 N/mm² = 10000 hPa.
When would I need to convert hectopascal (stress) to newton per square millimetre (stress)?
Stress conversions between hPa and N/mm² are routine in mechanics-of-materials work: yield, ultimate and allowable-stress specification, Young's-modulus tables and structural-design code calculations. MPa and N/mm² dominate ISO and European datasheets, psi and ksi dominate US structural codes, and kgf/cm² and kgf/mm² appear in legacy JIS and heavy-engineering documentation. Stress is the same physical dimension as pressure but a different engineering quantity — this category is mechanics-of-materials, not process pressure.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

Related conversions