Convert Joule (J) (j) to BTU (IT) (btu)
Category: Energy
1 j = 0.000948 btu
High-precision rounding: 6 decimals
How to convert joule (j) to btu (it)
We convert by pivoting through the SI base unit for Energy and applying exact factors where applicable.
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Quick conversion table
Handy values for Joule (J) → BTU (IT). Click a value to open that exact result.
Conversion formula
Linear unit conversions use standardized factors; many are exact by definition (e.g., 1 in = 25.4 mm, 1 ft = 0.3048 m).
Common mistakes
- Confusing calorie (cal) with kilocalorie (kcal) on nutrition labels.
- Treating BTU definitions interchangeably without noting standard (IT vs other).
Unit facts
- Joule (J): Joule (J) is the SI unit of energy: 1 J = 1 N·m = 1 kg·m²/s².
- BTU (IT): British thermal unit (BTU IT) ≈ 1,055.06 J; common in HVAC ratings.
About Energy
Energy is the capacity to do work. Joules form the SI base; Wh/kWh align with metering and batteries; calories and BTU survive in nutrition and HVAC. Conversions bridge mechanical, thermal, and electrical perspectives.
About Joule (J)
Joule (J)
SI energy unit equal to N·m. Fundamental in physics, electronics (J = W·s), and thermodynamics.
History: Named after James P. Joule. Became universal with SI coherence across mechanical and electrical domains.
About BTU (IT)
British thermal unit (BTU)
≈1,055.06 J (IT). Common in HVAC sizing and fuel energy content (per lb or per ft³).
History: Industrial steam era popularized BTU; persists for practical North American engineering.
Related conversions from j
Related conversions to btu
- cal → btu Calorie (cal)
- kcal → btu Kilocalorie (kcal)
- kwh → btu Kilowatt-hour (kWh)
- wh → btu Watt-hour (Wh)