ftH2O (4°C) to Atmosphere (std) Converter
Convert ftH2O (4°C) (ftH2O) to Atmosphere (std) (atm) instantly. 1 ftH2O = 0.0295 atm.
Pressure Converter
29 units available
1 ftH2O = 0.0295 atm
Formula:
atm = ftH2O × 0.0294997967With your value: 1 ftH2O = 0.0294998 atm
Other ftH2O (4°C) to Atmosphere (std) conversions
ftH2O (4°C) to Atmosphere (std) Conversion Table
| ftH2O (4°C) (ftH2O) | Atmosphere (std) (atm) |
|---|---|
| 0.5 | 0.01475 |
| 1 | 0.0295 |
| 2 | 0.059 |
| 5 | 0.147499 |
| 10 | 0.294998 |
| 15 | 0.442497 |
| 20 | 0.589996 |
| 25 | 0.737495 |
| 50 | 1.47499 |
| 100 | 2.94998 |
| 250 | 7.374949 |
| 500 | 14.749898 |
| 1000 | 29.499797 |
Atmosphere (std) to ftH2O (4°C) Conversion Table
| Atmosphere (std) (atm) | ftH2O (4°C) (ftH2O) |
|---|---|
| 0.5 | 16.949269 |
| 1 | 33.898539 |
| 2 | 67.797077 |
| 5 | 169.492694 |
| 10 | 338.985387 |
| 15 | 508.478081 |
| 20 | 677.970774 |
| 25 | 847.463468 |
| 50 | 1,694.926935 |
| 100 | 3,389.85387 |
| 250 | 8,474.634676 |
| 500 | 16,949.269352 |
| 1000 | 33,898.538705 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
ftH2O (4°C) (ftH2O)
Pressure
Derived from the pascal (1 Pa = 1 N/m²). The standard atmosphere is exactly 101 325 Pa.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Atmosphere (std) (atm)
Pressure
The standard atmosphere is exactly 101 325 Pa.
Source: Units accepted for use with the SI, SI Brochure Table 8
Bureau International des Poids et Mesures · Reviewed 2026-07-01
How to Convert ftH2O (4°C) to Atmosphere (std)
To convert from ftH2O (4°C) (ftH2O) to Atmosphere (std) (atm), multiply the value by 0.0294997967.
Formula: atm = ftH2O × 0.0294997967
Reverse: ftH2O = atm × 33.8985387045
Step-by-Step Example
- Start with your value in ftH2O (4°C). For example: 5 ftH2O
- Multiply by the conversion factor: 5 x 0.0294997967
- The result is: 0.147499 atm
About ftH2O (4°C)
The fth2o (4°c) (ftH2O) is a unit of pressure and stress. One fth2o (4°c) equals 2989.0669 pascals. UnitConvertLab converts it against every other pressure unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
Common uses: pressure calculations, engineering and science, education.
About Atmosphere (std)
One standard atmosphere equals 101,325 Pascals and represents the average air pressure at sea level.
Common uses: diving, weather, chemistry.
Frequently Asked Questions
How many Atmosphere (std) are in 1 ftH2O (4°C)?
There are exactly 0.0294997967 Atmosphere (std) in 1 ftH2O (4°C). This means the conversion factor from ftH2O (4°C) to Atmosphere (std) is 0.0294997967.
What is the formula to convert ftH2O (4°C) to Atmosphere (std)?
The formula to convert ftH2O (4°C) to Atmosphere (std) is: atm = ftH2O × 0.0294997967. For example, to convert 10 ftH2O (4°C) to Atmosphere (std), you would multiply 10 by 0.0294997967.
What is a ftH2O (4°C)?
The fth2o (4°c) (ftH2O) is a unit of pressure and stress. One fth2o (4°c) equals 2989.0669 pascals. UnitConvertLab converts it against every other pressure unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.
What is a Atmosphere (std)?
One standard atmosphere equals 101,325 Pascals and represents the average air pressure at sea level.
What are the common uses of ftH2O (4°C)?
The ftH2O (4°C) is commonly used in pressure calculations, engineering and science, education.
Related Pressure Conversions
Cite this page
UnitConvertLab. (2026). ftH2O (4°C) to Atmosphere (std) converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/fth2o-to-atmosphere