Boil Off Calculator


Welcome to the Boil Off Calculator, a powerful tool designed to provide accurate calculations for determining boil off rates. Whether you’re involved in cryogenic storage, shipping, or handling liquefied gases, this calculator simplifies the process of estimating the boil off volume. In this article, we’ll guide you through the usage, formula, examples, FAQs, and a working HTML and JS code for the calculator.

How to Use

Using the Boil Off Calculator is straightforward. Simply input the required values, click the “Calculate” button, and receive instant results. This tool is ideal for industries dealing with cryogenic substances, enabling efficient planning and resource allocation.


The formula for calculating boil off rate (BOR) is crucial for accurate results. The formula is as follows:


  • BOR is the boil off rate,
  • V is the volume of the substance,
  • Pi​ is the initial pressure,
  • Pf​ is the final pressure,
  • T is the temperature in Kelvin, and
  • R is the gas constant.


Let’s consider an example. Suppose you have a cryogenic storage tank with a volume (V) of 1000 liters, initial pressure (Pi​) of 200 kPa, final pressure (Pf​) of 100 kPa, temperature (T) of 300 K, and a gas constant (R) of 8.314 J/(mol·K). Plugging these values into the formula, you can determine the boil off rate.


Q: Is the Boil Off Calculator suitable for all cryogenic substances?

A: Yes, the calculator is versatile and can be used for various liquefied gases.

Q: What units should I use for input values?

A: Ensure consistent units—liters for volume, kPa for pressure, Kelvin for temperature.

Q: Can the calculator handle extreme conditions?

A: Absolutely. The formula is designed to handle a wide range of temperatures and pressures.


In conclusion, the Boil Off Calculator is an invaluable tool for industries dealing with cryogenic materials. Its accuracy and ease of use make it an essential resource for planning and decision-making in cryogenic storage and transportation. By understanding the formula and utilizing the provided example, you can confidently apply this tool to your specific scenarios.


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