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Supported formats

Input: number, select
Output: number, text

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1 bar equals 100000 pascal (Pa).

How it works

Expressed the source unit in pascal using its exact factor.
Divided by the target unit expressed in pascal.
Rounded the result to 12 significant digits.

1 bar = 100000 pa

Both units measure pressure, so the conversion is a single exact multiplication.

Methodology

Express every unit as an exact factor to the pascal base.
Multiply the input by the source factor and divide by the target factor.
Round the result to 12 significant digits so a convert-then-convert-back operation stays within floating-point tolerance.

Usage

Enter the value to convert.
Choose the source and target units.
Read the converted value and the conversion formula.

Examples

These are examples, not current values: they use fixed inputs, while the interactive tool computes live results in your browser.

Bar to pascal

{
  "value": 1,
  "from": "bar",
  "to": "pa"
}

Atmosphere to psi

{
  "value": 1,
  "from": "atm",
  "to": "psi"
}

mmHg to torr

{
  "value": 760,
  "from": "mmhg",
  "to": "torr"
}

Limitations

Exact pressure factors

Every pressure unit is defined as an exact multiple of the pascal, so the conversion is a single multiplication with no approximation beyond floating-point representation.

Frequently asked questions

Which pressure units does this converter support?: It supports every unit listed in the From and To menus, each expressed as an exact factor to the pascal.
Why does the result show a formula?: The formula shows the exact multiplication so you can verify the pressure conversion by hand.

Sources

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