How many Atmosphere are in one Inch of water?

One Inch of water equals 0.002458316309 atm. Enter any amount above to get an exact figure for your own value.

Is this converter accurate?

Yes. It uses the exact international definition of each unit and computes on your device, so the only rounding is for display.

Do you upload the numbers I enter?

No. The Inch of water to Atmosphere conversion runs entirely in your browser tab, and nothing you type is sent to a server.

Does it work on my phone?

Yes. It runs in any modern mobile browser and keeps working offline once the page has loaded.

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Inch of water to Atmosphere

Convert Inch of water to Atmosphere and get the exact value instantly.

Inch of water (inH₂O)Atmosphere (atm)0.002458316309

1 inH₂O = 0.002458316309 atm

Related conversions

Inch of water → Pascal Inch of water → Kilopascal Inch of water → Hectopascal Inch of water → Megapascal Inch of water → Bar Inch of water → Pound per square inch Inch of water → Kip per square inch Inch of water → Millimeter of mercury

About this conversion

To convert Inch of water to Atmosphere, multiply the number of Inch of water by 0.002458316309.

Pressure is reported in pascals, bars, PSI, atmospheres or millimeters of mercury depending on whether you are looking at tires, the weather, diving or medicine.

Conversion table

Inch of water (inH₂O)	Atmosphere (atm)
1 inH₂O	0.002458316309 atm
2 inH₂O	0.004916632618 atm
5 inH₂O	0.01229158154 atm
10 inH₂O	0.02458316309 atm
100 inH₂O	0.2458316309 atm

How to use this converter

Enter your Inch of water value
Type any number into the Inch of water field. It starts at 1 so you can read the rate straight away.
Read the Atmosphere result
The amount in Atmosphere updates as you type, so there is no button to press and nothing to wait for.
Swap or keep exploring
Use the swap control to flip the direction, or pick a related conversion from the list below.

Frequently asked

How many Atmosphere are in one Inch of water?: One Inch of water equals 0.002458316309 atm. Enter any amount above to get an exact figure for your own value.
Is this converter accurate?: Yes. It uses the exact international definition of each unit and computes on your device, so the only rounding is for display.
Do you upload the numbers I enter?: No. The Inch of water to Atmosphere conversion runs entirely in your browser tab, and nothing you type is sent to a server.
Does it work on my phone?: Yes. It runs in any modern mobile browser and keeps working offline once the page has loaded.

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