Bar to Atm Conversion Calculator
Convert pressure between bars and atmospheres with accurate bidirectional calculations
Pressure Conversion Calculator
1 bar = 100,000 Pa = 0.986923 atm
1 atm = 101,325 Pa = 1.01325 bar
Quick Reference Examples
Bar to Atm:
Atm to Bar:
Pressure Unit Reference
Bar
Atmosphere (atm)
Common Applications
Weather & meteorology
Industrial pressure systems
HVAC system design
Hydraulic calculations
Automotive tire pressure
Scientific research
Bar to Atm Conversion Table
| Bar | Atmospheres (atm) | Pascals (Pa) | kPa |
|---|---|---|---|
| 0.1 | 0.098692 | 10,000 | 10.0 |
| 0.5 | 0.493461 | 50,000 | 50.0 |
| 1 | 0.986923 | 1,00,000 | 100.0 |
| 1.5 | 1.480384 | 1,50,000 | 150.0 |
| 2 | 1.973846 | 2,00,000 | 200.0 |
| 2.5 | 2.467307 | 2,50,000 | 250.0 |
| 3 | 2.960769 | 3,00,000 | 300.0 |
| 4 | 3.947692 | 4,00,000 | 400.0 |
| 5 | 4.934615 | 5,00,000 | 500.0 |
| 10 | 9.869230 | 10,00,000 | 1000.0 |
| 15 | 14.803845 | 15,00,000 | 1500.0 |
| 20 | 19.738460 | 20,00,000 | 2000.0 |
| 25 | 24.673075 | 25,00,000 | 2500.0 |
| 30 | 29.607690 | 30,00,000 | 3000.0 |
| 50 | 49.346150 | 50,00,000 | 5000.0 |
| 100 | 98.692300 | 1,00,00,000 | 10000.0 |
Understanding Bar and Atmosphere Units
What is a Bar?
The bar is a metric unit of pressure that is not part of the International System of Units (SI), but is widely accepted for use with SI units. One bar is equal to exactly 100,000 pascals, which is approximately equal to the atmospheric pressure on Earth at sea level.
Bar Definition
- •1 bar = 100,000 Pa (exactly)
- •1 bar = 100 kPa
- •1 bar ≈ 0.986923 atm
- •Commonly used in meteorology and engineering
What is an Atmosphere?
The standard atmosphere (atm) is a unit of pressure equal to 101,325 pascals. It was originally defined as the pressure exerted by the weight of the atmosphere above sea level, but is now defined as an exact value for scientific purposes.
Atmosphere Definition
- •1 atm = 101,325 Pa (exactly)
- •1 atm = 101.325 kPa
- •1 atm = 1.01325 bar
- •Standard reference for pressure measurements
Conversion Formulas
Bar to Atm
atm = bar × 0.986923
Example: 3 bar = 3 × 0.986923 = 2.960769 atm
Atm to Bar
bar = atm × 1.01325
Example: 2 atm = 2 × 1.01325 = 2.0265 bar