BTU Calculator
Calculate the BTU (British Thermal Units) needed for heating or cooling a room based on area, ceiling height, insulation quality, and temperature difference.
How to Use the BTU Calculator
- Enter the known physical values in the corresponding fields.
- Select the appropriate units if multiple options are available.
- The unknown value is computed instantly from the formula.
- Review the result and the formula explanation below.
快速参考
| 从 | 到 |
|---|---|
| Speed of light | 299,792,458 m/s |
| Gravity (g) | 9.807 m/s² |
| Avogadro's number | 6.022 × 10²³ |
| Boltzmann const. | 1.38 × 10⁻²³ J/K |
| Elementary charge | 1.602 × 10⁻¹⁹ C |
| Planck's const. | 6.626 × 10⁻³⁴ J·s |
使用场景
- •Solving physics homework or exam problems with the correct formula.
- •Verifying experimental measurements and calculations in the lab.
- •Understanding physical relationships between quantities.
- •Quick engineering calculations for design or estimation.
公式
BTU = Area × Ceiling Height × Temperature Difference × Insulation Factor / 60. Tons of AC = BTU / 12000. Watts = BTU × 0.293.
常见问题
How to use?
Enter the data and click the calculate button.
What is a BTU?
A BTU (British Thermal Unit) measures the amount of heat required to raise the temperature of one pound of water by one degree Fahrenheit.
How does insulation affect BTU?
Poor insulation requires more BTU because heat escapes faster. Good insulation reduces the BTU needed by up to 40%.
Is it free?
Yes, all calculators are completely free.