Atomic units of pressure to Inches of water Converter

1 atomic unit of pressure (Eh/a₀³) equals 118,114,514,600 inches of water (inH₂O).

Quick answer

  • 1 atomic unit of pressure = 118,114,514,600 inches of water
  • 1 inch of water = 8.46636 × 10-12 atomic units of pressure
  • Formula: inH₂O = Eh/a₀³ × 118,114,514,600

1 atomic unit of pressure = 118,114,514,600 inches of water

How to convert atomic units of pressure to inches of water

inH₂O = Eh/a₀³ × 118,114,514,600

To convert atomic units of pressure to inches of water, multiply the number of atomic units of pressure by 118,114,514,600.

Example: 1 Eh/a₀³ to inH₂O

  1. Start with the value in atomic units of pressure: 1 Eh/a₀³.
  2. Multiply by 118,114,514,600: 1 × 118,114,514,600 = 118,114,514,600.
  3. Result: 1 atomic unit of pressure = 118,114,514,600 inches of water.

Going the other way, 1 inch of water = 8.46636 × 10-12 atomic units of pressure, so to convert inches of water back to atomic units of pressure you divide by the same number. See inches of water to atomic units of pressure.

Atomic units of pressure to inches of water conversion table

Atomic units of pressure (Eh/a₀³)Inches of water (inH₂O)
1 Eh/a₀³ 118,114,514,600 inH₂O
2 Eh/a₀³ 236,229,029,200 inH₂O
3 Eh/a₀³ 354,343,543,800 inH₂O
4 Eh/a₀³ 472,458,058,400 inH₂O
5 Eh/a₀³ 590,572,573,000 inH₂O
6 Eh/a₀³ 708,687,087,600 inH₂O
7 Eh/a₀³ 826,801,602,200 inH₂O
8 Eh/a₀³ 944,916,116,800 inH₂O
9 Eh/a₀³ 1,063,030,631,000 inH₂O
10 Eh/a₀³ 1,181,145,146,000 inH₂O
100 Eh/a₀³ 11,811,451,460,000 inH₂O

What is an atomic unit of pressure?

The atomic unit of pressure, about 29.4 terapascals, arises in quantum chemistry.

More about atomic units of pressure →

What is an inch of water?

The inch of water column is the standard unit for low pressures in US gas and HVAC work: natural gas appliances run at about 3.5–7 inches of water, and duct static pressures are measured the same way.

More about inches of water →

Frequently asked questions

How many inches of water are in an atomic unit of pressure?

One atomic unit of pressure is 118,114,514,600 inches of water.

How many atomic units of pressure are in an inch of water?

One inch of water is 8.46636e-12 atomic units of pressure.

What is the formula to convert atomic units of pressure to inches of water?

inH₂O = Eh/a₀³ × 118,114,514,600.