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Gay-Lussac’s Law Calculator

Find the new pressure of a gas at constant volume.

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How it works

Fill in the 3 fields above and Gay-Lussac’s Law Calculator calculates the result instantly, recalculating as you change any value. It applies the formula P₁/T₁ = P₂/T₂. The math runs locally in your browser — nothing is sent to a server.

Formula

P₁/T₁ = P₂/T₂

Examples

  • Initial pressure 100 kPa, Initial temp 300 K, Final temp 350 K → Final pressure: 116.67 kPa

Frequently asked questions

How do I use the Gay-Lussac’s Law Calculator?

Enter your values in the 3 input fields and the result is calculated automatically as you type. Change any value to see the numbers update instantly.

What formula does the Gay-Lussac’s Law Calculator use?

It uses P₁/T₁ = P₂/T₂. The calculation is performed in your browser using standard, well-established math for accurate results.

Is my data private?

Yes. The Gay-Lussac’s Law Calculator runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.

Is the Gay-Lussac’s Law Calculator free?

Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on science and the rest of the platform, you can use it as often as you like.

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