pascal
Papressure · International · Modern
SI derived unit of pressure and stress; 1 Pa = 1 N/m² = 1 kg·m⁻¹·s⁻².
Converter
pressure · Scientific/technical · Modern/historical
torr
exact
- Record
- M320
- Definition quality
- Standardized
- Conversion mode
- multiplicative
- Calculator
- Fully calculable
Definition
1 Torr = (1/760) atm = 101325/760 Pa
Reference value
One torr is exactly 133.3223684211 pascals.
History & use
Its scale is historically connected with mercury-column pressure measurement and the atmosphere, but modern conversion is expressed through the defined standard atmosphere.
Modern use
Modern use is context-dependent and varies by region or measurement system.
Sources & evidence
Related measurements
bar
barpressure · International · Modern / historical
1 bar = exactly 100,000 Pa.
pressure · United States · Modern
1 psi = exactly 6894.757293168361 Pa using international lb/in and standard gravity.
pressure · International · Modern
1 atm = 101325 Pa exactly
pressure · Medical/scientific/technical · Modern
1 mmHg (conventional) = 133.3224 Pa
pressure
1 hPa = 100 Pa; conventional inHg converts using NIST factors.