1500 Btu to Joules

1500 Btu ≈ 1.5826e+6 J

Calculation: J = 1500 Btu × 1055.06 ≈ 1.5826e+6 J

Btu to Joule Converter

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How to Convert Btu to Joule

1 Btu = 1055.06 Joules

Joule = Btu × 1055.06

Example: 1500 Btu × 1055.06 = 1582600 J

Reverse Conversion

To convert Joules back to Btu:

  • Remember, 1 joule equals 0.000947817 Btu.
  • To convert 1582600 J to Btu, multiply 1582600 x 0.000947817, resulting in 1500 Btu.

1500 Btu is also equal to:

  • 1582.6 kilojoule
  • 0.43961 kilowatt hour
  • 378.25 calorie (nutritional)
  • 439.61 watt hour
About these units

Btu: British thermal unit (IT) — legacy heat unit based on heating water.

Joule: SI unit of energy: 1 J = 1 N·m = 1 kg·m²·s⁻².

Frequently Asked Questions

How much is 1500 Btu in Joules?

1500 Btu equals 1582600 Joules. This is calculated by multiplying 1500 by the conversion factor 1055.06.

What does 1500 Btu look like in Joules?

1500 Btu (1582600 Joules) is a small space heater output per hour.

How do you calculate 1500 Btu to Joules?

Multiply 1500 by the conversion factor 1055.06. The calculation is 1500 × 1055.06 = 1582600 Joules. This factor is defined by international measurement standards.

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1500 Btu = 1582580 Joules
1500 Btu = 1582580 Joules — conversion chart

For general conversions between Btu and Joules, see the Btu to Joules converter.

Also convert Btu to:

Conversion factors verified against NIST, BIPM, ISO 80000-4 1 cal_IT = 4.1868 J by definition (BIPM/ITS-90). Last reviewed: April 2026
Adilson Fernandes By Adilson Fernandes
Tiago Fernandes Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.