Thermochemical kilocalories to British thermal units (IT)
1 kcal ≈ 3.966 BTU. Edit either value to convert instantly.
Conversion formula
BTU = kcal × (4,184) × (50,000,000 / 5.2752792631 × 10¹⁰)1 kcal ≈ 3.96567 BTU
thermochemical kilocalorie (kcal)
Thermochemical kilocalorie is a unit of energy: 1 kcal = 4,184 J. A food Calorie means 1 kcal, equal to 1,000 thermochemical calories.
Source: NIST SP 811, Appendix B.9: conversion factors by quantity
British thermal unit (IT) (BTU)
British thermal unit (IT) is a unit of energy: 1 BTU = 1,055.05585262 J. Uses the International Table definition (IT), not the thermochemical BTU.
Source: NBSIR 81-2401, Appendix A3.2: International Table British thermal unit
Conversion table
| kcal | BTU |
|---|---|
| ≈ 3.96567 | |
| ≈ 7.93133 | |
| ≈ 19.8283 | |
| ≈ 39.6567 | |
| ≈ 59.485 | |
| ≈ 79.3133 | |
| ≈ 99.1417 | |
| ≈ 118.97 | |
| ≈ 158.627 | |
| ≈ 178.455 |
| kcal | BTU |
|---|---|
| ≈ 198.283 | |
| ≈ 237.94 | |
| ≈ 277.597 | |
| ≈ 317.253 | |
| ≈ 356.91 | |
| ≈ 396.567 | |
| ≈ 594.85 | |
| ≈ 634.507 | |
| ≈ 674.163 | |
| ≈ 713.82 |
Frequently asked questions
How many British thermal units (IT) are in 1 thermochemical kilocalorie?
1 kcal ≈ 3.966 BTU. BTU = kcal × (4,184) × (50,000,000 / 5.2752792631 × 10¹⁰)
How do I convert kcal to BTU?
BTU = kcal × (4,184) × (50,000,000 / 5.2752792631 × 10¹⁰)
Is 1 thermochemical kilocalorie bigger than 1 British thermal unit (IT)?
1 kcal ≈ 3.966 BTU.
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