Hectopascal to PSI Converter
Pressure · unit-converter
Convert Hectopascal to PSI with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations bridge through pascal with fixed definitions (standard atmosphere = 101,325 Pa; torr and mmHg = atm/760; plus industrial/manometer units like kgf/cm², inHg, inH2O, and mmH2O).
About Hectopascal
The hectopascal (hPa) equals 100 Pa. Meteorologists use hPa for surface charts; 1 hPa equals 1 millibar.
About PSI
Pounds-force per square inch (PSI) is common for tires, hydraulics, and US industrial equipment.
How to convert hectopascal (hpa) to psi
1 hectopascal equals 0.014503773773021682 psi in this tool (via pascal):
1 hpa = (100 Pa ÷ 6894.757293168 Pa) psi = 0.014503773773021682 psi
Each hectopascal carries 100 Pa and each psi 6894.757293168 Pa, so one hpa equals 100 ÷ 6894.757293168 psi.
Let p(hpa) be pressure in Hectopascal (hpa), and p(psi) in PSI (psi). Then:
p(psi) = p(hpa) × (100 / 6894.757293168)
Equivalently, divide by how many hpa fit into one psi (Pa per psi divided by Pa per hpa):
p(psi) = p(hpa) ÷ 68.94757293168
Examples
Example #1: Convert 1 hpa to psi
1 hpa = 1 hpa × (100/6894.757293168) psi = 0.0145037738 psi
1 hpa = 1 hpa ÷ 68.94757293168 = 0.0145037738 psi
1 hpa × (100/6,894.757293168) = 0.014504 psi
Example #2: Convert 10 hpa to psi
10 hpa = 10 hpa × (100/6894.757293168) psi = 0.1450377377 psi
10 hpa = 10 hpa ÷ 68.94757293168 = 0.1450377377 psi
10 hpa × (100/6,894.757293168) = 0.145038 psi
Summary
To convert Hectopascal to PSI, multiply the value in hpa by (100 Pa per hpa) / (6894.757293168 Pa per psi). Equivalently: value_psi = value_hpa × (100 / 6894.757293168). Numerically, 1 hpa equals 0.014503773773021682 psi.
Relationship context
Both Hectopascal and PSI are converted by fixed multiples of the pascal. Multiplying by (Pa per hpa) ÷ (Pa per psi) gives the same result as passing through pascal, keeping bar, atm, PSI, kPa, hPa, torr, and mmHg consistent on the hub.
Conversion tables
| Hectopascal (hpa) | PSI (psi) |
|---|---|
| 0.1 | 0.0014503774 |
| 1 | 0.0145037738 |
| 2 | 0.0290075475 |
| 3 | 0.0435113213 |
| 4 | 0.0580150951 |
| 5 | 0.0725188689 |
| 6 | 0.0870226426 |
| 7 | 0.1015264164 |
| 8 | 0.1160301902 |
| 9 | 0.130533964 |
| Hectopascal (hpa) | PSI (psi) |
|---|---|
| 10 | 0.1450377377 |
| 20 | 0.2900754755 |
| 30 | 0.4351132132 |
| 40 | 0.5801509509 |
| 50 | 0.7251886887 |
| 60 | 0.8702264264 |
| 70 | 1.0152641641 |
| 80 | 1.1603019018 |
| 90 | 1.3053396396 |
| 100 | 1.4503773773 |