barからatmへの変換 (bar → atm)

1 bar = 0.986923atm. 測定カテゴリ間をスムーズに切り替え、リアルタイムで全単位マトリックスを計算し、瞬時に結果をコピーできます。

⇄

圧力・応力 Converter

Decimals:

From

Formula: --

∑

Step-by-Step Mathematical Derivation

Verified SI Standard

➡️ Convert bar to atm

Value in atm = Value in bar × 0.9869233

To convert any quantity from bar to atm, multiply the quantity by the constant conversion factor 0.9869233.

⬅️ Convert atm to bar (Inverse)

Value in bar = Value in atm × 1.01325

To reverse the operation, multiply your atm figure by 1.01325 (or divide by 0.9869233).

🔢 Step-by-Step Calculation Procedure:

Identify the starting value in bar (bar).
Apply the exact linear conversion factor: 1 bar = 0.9869233 atm.
Multiply the input value by 0.9869233 to obtain the exact measurement in atm (atm).
Verify precision against standard BIPM / NIST SP 811 statutory guidelines.

⚡

All-Units Instant Matrix

Live Computed

pa --

kpa --

kPa

bar --

bar

psi --

psi

atm --

atm

torr --

Torr

inhg --

inHg

🖨️

Printable Reference Cheat Sheet

Generate clean offline reference PDF tables for Pressure

Pressure Reference Sheet

Standard SI Base Unit: 1 pa

aiunitconverters.com

10/14/2026

Unit Name	Symbol	System	Equivalent in pa
Pascal	Pa	Standard	1 Pa = 1 pa
Kilopascal	kPa	Standard	1 kPa = 1000 pa
Bar	bar	Standard	1 bar = 100000 pa
Pound per Sq Inch	psi	Standard	1 psi = 6894.75729 pa
Standard Atmosphere	atm	Standard	1 atm = 1.0133e+5 pa
Torr (mmHg)	Torr	Standard	1 Torr = 133.322368 pa
Inch of Mercury	inHg	Standard	1 inHg = 3386.38864 pa

📦 Embed this Converter Widget on Your Website Free Web Component

Copy and paste this snippet directly into your HTML, WordPress, or documentation site:

🎓

Academic & Research Citation Exporter

Cite this mathematical formula and conversion factor in research papers and wikis

BibTeX / APA / IEEE

@misc{ai_unit_converter_bar_to_atm,
  author       = {AI Unit Converters Standards Board},
  title        = {Exact bar to atm Conversion Factor and Mathematical Derivation},
  year         = {2026},
  howpublished = {\url{https://aiunitconverters.com/ja/pressure/bar-to-atm}},
  note         = {Derived from NIST Special Publication 811 and BIPM SI Brochure}
}

AI Unit Converters. (2026). bar to atm conversion formula & metric standard. Retrieved from https://aiunitconverters.com/ja/pressure/bar-to-atm

[1] AI Unit Converters Standards Board, "bar to atm conversion factor," 2026. [Online]. Available: https://aiunitconverters.com/ja/pressure/bar-to-atm. [Accessed: Oct 14, 2026].

\[ 1\text{ bar} = \text{factor} \times 1\text{ atm} \]

📊基準換算表

bar (bar)atm (atm)

1bar	0.9869atm
2bar	1.9738atm
5bar	4.9346atm
10bar	9.8692atm
15bar	14.8038atm
20bar	19.7385atm
25bar	24.6731atm
50bar	49.3462atm
75bar	74.0192atm
100bar	98.6923atm
250bar	246.7308atm
500bar	493.4616atm
1000bar	986.9233atm
5000bar	4,934.6163atm
10000bar	9,869.2327atm

atm (atm)bar (bar)

1atm	1.0132bar
2atm	2.0265bar
5atm	5.0663bar
10atm	10.1325bar
15atm	15.1988bar
20atm	20.265bar
25atm	25.3313bar
50atm	50.6625bar
75atm	75.9938bar
100atm	101.325bar
250atm	253.3125bar
500atm	506.625bar
1000atm	1,013.25bar
5000atm	5,066.25bar
10000atm	10,132.5bar