Pressure
bartohPa
Convert bar (bar) to hectopascals (hPa).
Factor1 bar = 1000 hPa
Converter
bar
Accepts numbers or expressions, e.g. 150 + 14.7
Result
hPa
Rendered to 6 significant figures.
Formula
Formula
hPa = bar × 1000
Multiply any value in bar by 1000 to obtain the value in hectopascals.
Worked example
Convert 1 bar to hPa.
- 01Start with 1 bar.
- 02Multiply by the conversion factor: 1 × 1000 = 1000 hPa.
Result1 bar = 1000 hPa
Conversion table
| bar | hPa |
|---|---|
| 1 | 1000 |
| 2 | 2000 |
| 5 | 5000 |
| 10 | 10000 |
| 20 | 20000 |
| 50 | 50000 |
| 100 | 1.0000e+5 |
| 200 | 2.0000e+5 |
| 500 | 5.0000e+5 |
| 1000 | 1.0000e+6 |
Reference values rounded to 5 significant figures for display.
FAQ
What is the conversion factor from bar to hPa?
1 bar equals 1000 hPa. To convert, multiply the value in bar by 1000.
How do I convert 1 bar to hPa?
1 bar = 1000 hPa. For any value, multiply by 1000.
How do I convert hPa back to bar?
Divide by the same factor — or equivalently, multiply by 0.001. So 1 hPa = 0.001 bar.
When would I need to convert bar to hectopascal?
Pressure conversions between bar and hPa 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).