Pressure Converter – Free Online Unit Converter | SmartCrafterAI

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Pressure Converter – Free Online Unit Converter

Convert between Pascal, kilopascal, megapascal, bar, millibar, PSI, atmosphere, mmHg, torr, inHg and more. Instant, accurate and 100% private.

✅ Free 🔵 12 Units ⚡ Live ⇄ Bidirectional 🔒 Private

⭐⭐⭐⭐⭐4.9 / 5(7,441 ratings)

🔵Pressure Converter — Convert Now

From

Enter a value above to convert

Quick Pairs

≡All Units — Click any value to copy it

Unit	Symbol	Converted Value

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Live Conversion

Values update instantly as you type — in either the From or To field. Bidirectional with no button needed.

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All Units at Once

The table shows your value in every unit simultaneously. Click any row to copy it instantly.

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Swap Units

Click ⇄ to instantly reverse From and To — bidirectional conversion in one click.

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100% Private

All conversion runs in JavaScript in your browser. Nothing is sent to any server.

⭐ User Reviews

4.9

⭐⭐⭐⭐⭐

Based on 7,441 verified reviews · 99% recommend this tool

Alex P.

Yesterday

⭐⭐⭐⭐⭐

bar to PSI is what I use constantly for tyre pressure and hydraulic systems. The quick pairs make it one click. Accurate factors throughout.

Pressure Converter

Dana F.

3 days ago

⭐⭐⭐⭐⭐

The mmHg converter is essential for blood pressure conversions. The all-units table is a huge time saver — I can see every pressure unit at once.

Pressure Converter

Ivan K.

1 week ago

⭐⭐⭐⭐⭐

I work in meteorology and need mbar to hPa and atm constantly. This is the cleanest pressure converter I have used. Live bidirectional input is perfect.

Pressure Converter

Zoe R.

2 weeks ago

⭐⭐⭐⭐⭐

The inHg and torr units are essential for my vacuum work. Having them alongside bar and kPa in the same tool is a real time saver for lab use.

Pressure Converter

📖 How to Use the Pressure Converter

Enter a Value

Type the number you want to convert in either input field. Conversion runs live as you type.

Select Your Units

Use the dropdowns to choose From and To units. Use Quick Pair buttons for the most common conversions.

See All Units at Once

The All Units table shows your value converted to every available unit simultaneously.

Copy the Result

Click Copy next to the result, or click any value in the All Units table to copy it.

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❓ Frequently Asked Questions

How many PSI in a bar?+

1 bar = 14.5038 PSI. 1 PSI = 0.0689476 bar. Bar is preferred in European engineering; PSI is standard in the US. Both are widely used for tyre pressure, industrial pressure and hydraulics.

What is standard atmospheric pressure in different units?+

1 standard atmosphere = 101,325 Pa = 101.325 kPa = 1.01325 bar = 14.6959 PSI = 760 mmHg = 760 Torr = 29.9213 inHg.

What is the difference between Torr and mmHg?+

Torr and mmHg are very close but not identical. 1 mmHg = 133.3224 Pa (exact density-based definition); 1 Torr = 101325/760 Pa ≈ 133.3224 Pa. For practical purposes they are used interchangeably in medicine and vacuum work.

When is MPa used?+

Megapascal (MPa) is used in engineering for high-pressure systems — hydraulics, materials testing, tyre specifications for heavy vehicles. 1 MPa = 10 bar ≈ 145 PSI.

What is a millibar?+

1 millibar (mbar) = 100 Pa = 0.001 bar. Millibar is widely used in meteorology for atmospheric pressure. Standard sea-level pressure ≈ 1013.25 mbar. Hectopascal (hPa) = millibar numerically.

💡 Why Use Our Pressure Converter?

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Both-Way Live

Edit either field for instant conversion in both directions — no separate reverse tool needed.

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All Units Table

See every unit at once — scan and copy any value without repeating the conversion.

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One-Click Swap

Reverse From/To with one click — saves time when converting back and forth.

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Quick Pairs

Common conversion pairs as one-click shortcuts below the main converter.

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Zero-Upload Privacy

Runs entirely in your browser — nothing sent to any server.

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Free, No Account

All units, unlimited use — completely free. No sign-up, no watermarks.

📚 Reference — Pressure Conversion Factors

Common Conversions

Popular queries: bar to psi psi to bar kpa to psi pressure converter

From	To	Factor / Formula	Note
1 bar	14.5038 psi	× 14.5038	Engineering pressure
1 psi	6894.76 Pa	× 6894.76	US standard
1 atm	101,325 Pa	× 101325	Standard atmosphere
1 kPa	0.145038 psi	× 0.145038	kPa to psi
1 MPa	10 bar	× 10	High pressure
1 mmHg	133.322 Pa	× 133.322	Blood pressure / vacuum
1 inHg	3,386.39 Pa	× 3386.39	Weather/aviation