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Stress

N/mm²toGPa

Convert newtons per square millimetre (stress) (N/mm²) to gigapascals (stress) (GPa).

Factor1 N/mm² = 0.001 GPa

Converter

N/mm²

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

Result
1GPa

Rendered to 6 significant figures.

Formula

Formula
GPa = N/mm² × 0.001

Multiply any value in newtons per square millimetre (stress) by 0.001 to obtain the value in gigapascals (stress).

Worked example

Convert 1000 N/mm² to GPa.

  1. 01Start with 1000 N/mm².
  2. 02Multiply by the conversion factor: 1000 × 0.001 = 1 GPa.
Result1000 N/mm² = 1 GPa

Conversion table

N/mm²GPa
10.001
20.002
50.005
100.01
200.02
500.05
1000.1
2000.2
5000.5
10001

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from N/mm² to GPa?
1 N/mm² equals 0.001 GPa. To convert, multiply the value in newtons per square millimetre (stress) by 0.001.
How do I convert 1 N/mm² to GPa?
1 N/mm² = 0.001 GPa. For any value, multiply by 0.001.
How do I convert GPa back to N/mm²?
Divide by the same factor — or equivalently, multiply by 1000. So 1 GPa = 1000 N/mm².
When would I need to convert newton per square millimetre (stress) to gigapascal (stress)?
Stress conversions between N/mm² and GPa 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).

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