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ATM to kPa

ATM to kPa

Convert atm to kPa (atmospheres) to kilopascals) and back using the precise factor 1 atm = 101.325 kPa. Mobile-first, no-refresh, professional UI.

Decimals:
8

Type a value or use quick buttons. Negative values are allowed for differential/relative pressure.

Values sync automatically using the exact factor 101.325.

Conversion factor: 1 atm = 101.325 kPa
Current atm
1
Converted kPa
101.325
Approx. bar
1.01325

Uses 1 bar = 100 kPa.

How the ATM to kPa Works

This converter uses the internationally accepted standard: 1 atm = 101.325 kPa. To convert:

  • kPa = atm × 101.325
  • atm = kPa ÷ 101.325

Enter a value in either field. The other side updates instantly based on the current decimal precision. All calculations run in-browser for speed and privacy.

How do you convert atm to kPa?
Multiply atm by 101.325. Example: 2 atm × 101.325 = 202.65 kPa.
How do you convert kPa to atm?
Divide kPa by 101.325. Example: 250 kPa ÷ 101.325 ≈ 2.467 atm.
Is 1 atm equal to 1 kPa?
No. 1 atm = 101.325 kPa. kPa is much smaller.
Is 100 kPa the same as 1 atm?
Not exactly. 100 kPa ≈ 0.986923 atm, slightly less than 1 atm.
Why do some sources say 101.3 kPa?
The exact value is 101.325 kPa. For simplicity, many tables round to 101.3 kPa; this tool uses the precise constant.

This calculator is for informational and educational purposes only. Always follow engineering, lab, or manufacturer guidelines where exact pressure standards are required.