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millimeter of water (15.56°C)
Symbol:  mmH2O, mmCE (15.56 °C) 
Category:  Pressure 
SI Equivalent:  9.79706 Pa
Dimension ML-1T-2 
 
Notes
Small pressure unit defined by a column of water at 15.56°C with a height of 1 millimeter.
Convert     mmH2O, mmCE (15.56 °C)  
1 mmH2O, mmCE (15.56 °C) =
Energy density
  Symbol Unit Name
2.62945×10-4  Btu (IT)/ft3  British thermal unit (IT) per cubic foot 
4.22142×10-5  Btu (IT)/gal (UK)  British thermal unit (IT) per gallon (UK) 
3.51507×10-5  Btu (IT)/gal (US)  British thermal unit (IT) per gallon (US) 
9.79706  J/m3  joule per cubic meter 
9.79706×10-3  kJ/m3  kilojoule per cubic meter 
1.23113×10-3  MGOe  megagauss-oersted (MGOe) 
Pressure
  Symbol Unit Name
9.99022×10-5  at  atmosphere (metric) 
9.66895×10-5  atm  atmosphere (standard) 
9.79706×10-5  bar  bar 
97.9706  barad  barad 
97.9706    barye 
7.3484×10-3    centiHg (0°C) 
7.3484×10-3  cmHg (0 °C)  centimeter of mercury (0°C) 
9.9905×10-2  cmH2O  centimeter of water (4°C) 
97.9706  dyn/cm2  dyne per square centimeter 
3.27772×10-3  ft H2O  foot of water (4°C) 
9.79706×10-9  GPa  gigapascal 
9.79706×10-2  hPa  hectopascal 
2.89307×10-3  inHg (0 °C)  inch of mercury (0°C) 
2.90096×10-3  inHg (15.56 °C)  inch of mercury (15.56°C) 
3.93701×10-2  inH2O (15.56 °C)  inch of water (15.56°C) 
3.93327×10-2  inH2O (4 °C)  inch of water (4°C) 
9.99022×10-5  kgf/cm2  kilogram force per square centimeter 
9.99022×10-3  kgf/dm2  kilogram force per square decimeter 
0.999022  kgf/m2  kilogram force per square meter 
9.99022×10-7  kgf/mm2  kilogram force per square millimeter 
9.79706×10-3  kPa  kilopascal 
1.42094×10-6  kip/in2, ksi, KSI  kilopound force per square inch 
9.79706×10-6  MPa  megapascal 
10×10-4  mH2O, mCE (15.56 °C)  meter of water (15.56°C) 
9.9905×10-4  mH2O, mCE (4 °C)  meter of water (4°C) 
97.9706  µbar  microbar (barye, barrie) 
73.484  µHg (0 °C)  micron of mercury (millitorr) 
9.79706×10-2  mbar  millibar 
7.3484×10-2  mmHg, torr, Torr (0 °C)  millimeter of mercury (0°C) 
0.99905  mmH2O, mmCE (4 °C)  millimeter of water (4°C) 
73.484  mtorr  millitorr 
9.79706  N/m2  newton per square meter 
2.27351×10-2  ozf/in2, osi  ounce force (av.) per square inch 
9.79706  Pa, N/m2  pascal 
0.204616  lbf/ft2  pound force per square foot 
1.42094×10-3  psi, PSI, lbf/in2  pound force per square inch 
6.58332  pdl/ft2  poundal per square foot 
4.57175×10-2  pdl/in2  poundal per square inch 
9.66895×10-5  atm  standard atmosphere 
9.13464×10-5  tonf/ft2 (UK)  ton force (long) per square foot 
6.3435×10-7  tonf/in2 (UK)  ton force (long) per square inch 
9.99022×10-8  tonf/cm2 (metric)  ton force (metric) per square centimeter 
9.99022×10-4  tonf/m2 (metric)  ton force (metric) per square meter 
1.02308×10-4  tonf/ft2 (US)  ton force (short) per square foot 
7.10472×10-7  tonf/in2 (US)  ton force (short) per square inch 
7.3484×10-2  torr  torr 
Glossary
Injection Molding Design Guide

Guide for high quality and cost-effective plastic injection molding.

STEM Career Outlook

Wages, employment opportunities, and growth projections for STEM jobs.

3D Scanners

A white paper to assist in the evaluation of 3D scanning hardware solutions.

Metal 3D Printing Design Guide

Direct Metal Laser Sintering (DMLS) 3D printing for parts with reduced cost and little waste.