Pressure
atmtoN/mm²
Convert standard atmospheres (atm) to newtons per square millimetre (N/mm²).
Factor1 atm = 0.101325 N/mm²
Converter
atm
Accepts numbers or expressions, e.g. 150 + 14.7
Result
N/mm²
Rendered to 6 significant figures.
Formula
Formula
N/mm² = atm × 0.101325
Multiply any value in standard atmospheres by 0.101325 to obtain the value in newtons per square millimetre.
Worked example
Convert 10 atm to N/mm².
- 01Start with 10 atm.
- 02Multiply by the conversion factor: 10 × 0.101325 = 1.01325 N/mm².
Result10 atm = 1.01325 N/mm²
Conversion table
| atm | N/mm² |
|---|---|
| 1 | 0.10132 |
| 2 | 0.20265 |
| 5 | 0.50662 |
| 10 | 1.0132 |
| 20 | 2.0265 |
| 50 | 5.0663 |
| 100 | 10.133 |
| 200 | 20.265 |
| 500 | 50.663 |
| 1000 | 101.33 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from atm to N/mm²?
1 atm equals 0.101325 N/mm². To convert, multiply the value in standard atmospheres by 0.101325.
How do I convert 1 atm to N/mm²?
1 atm = 0.101325 N/mm². For any value, multiply by 0.101325.
How do I convert N/mm² back to atm?
Divide by the same factor — or equivalently, multiply by 9.869233. So 1 N/mm² = 9.86923 atm.
When would I need to convert standard atmosphere to newton per square millimetre?
Pressure conversions between atm and N/mm² are common when working with mixed-vendor instrumentation, when piping codes use different units to process datasheets, or when converting field readings into SI for hydraulic calculations.
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).