Kilopascal to mmH2O Converter
Pressure · unit-converter
Convert Kilopascal to mmH2O 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 Kilopascal
The kilopascal (kPa) equals 1,000 Pa. It appears in HVAC, building science, and many technical specifications.
About mmH2O
Millimeters of water column (mmH2O) is used for very low differential pressure in instrumentation and ventilation.
How to convert kilopascal to millimeter of water (mmh2o, 4 °c)
1 kilopascal equals 101.97162129779284 mmh2o in this tool (via pascal):
1 kpa = (1000 Pa ÷ 9.80665 Pa) mmh2o = 101.97162129779284 mmh2o
Each kilopascal carries 1000 Pa and each mmh2o 9.80665 Pa, so one kpa equals 1000 ÷ 9.80665 mmh2o.
Let p(kpa) be pressure in Kilopascal (kpa), and p(mmh2o) in mmH2O (mmh2o). Then:
p(mmh2o) = p(kpa) × (1000 / 9.80665)
Equivalently, divide by how many kpa fit into one mmh2o (Pa per mmh2o divided by Pa per kpa):
p(mmh2o) = p(kpa) ÷ 0.00980665
Examples
Example #1: Convert 1 kpa to mmh2o
1 kpa = 1 kpa × (1000/9.80665) mmh2o = 101.971621298 mmh2o
1 kpa = 1 kpa ÷ 0.00980665 = 101.971621298 mmh2o
1 kpa × (1,000/9.80665) = 101.971621 mmh2o
Example #2: Convert 10 kpa to mmh2o
10 kpa = 10 kpa × (1000/9.80665) mmh2o = 1019.71621298 mmh2o
10 kpa = 10 kpa ÷ 0.00980665 = 1019.71621298 mmh2o
10 kpa × (1,000/9.80665) = 1,019.716213 mmh2o
Summary
To convert Kilopascal to mmH2O, multiply the value in kpa by (1000 Pa per kpa) / (9.80665 Pa per mmh2o). Equivalently: value_mmh2o = value_kpa × (1000 / 9.80665). Numerically, 1 kpa equals 101.97162129779284 mmh2o.
Relationship context
Both Kilopascal and mmH2O are converted by fixed multiples of the pascal. Multiplying by (Pa per kpa) ÷ (Pa per mmh2o) gives the same result as passing through pascal, keeping bar, atm, PSI, kPa, hPa, torr, and mmHg consistent on the hub.
Conversion tables
| Kilopascal (kpa) | mmH2O (mmh2o) |
|---|---|
| 0.1 | 10.1971621298 |
| 1 | 101.971621298 |
| 2 | 203.943242596 |
| 3 | 305.914863893 |
| 4 | 407.886485191 |
| 5 | 509.858106489 |
| 6 | 611.829727787 |
| 7 | 713.801349085 |
| 8 | 815.772970382 |
| 9 | 917.74459168 |
| Kilopascal (kpa) | mmH2O (mmh2o) |
|---|---|
| 10 | 1,019.71621298 |
| 20 | 2,039.43242596 |
| 30 | 3,059.14863893 |
| 40 | 4,078.86485191 |
| 50 | 5,098.58106489 |
| 60 | 6,118.29727787 |
| 70 | 7,138.01349085 |
| 80 | 8,157.72970382 |
| 90 | 9,177.4459168 |
| 100 | 10,197.1621298 |