Convert 1 British Thermal Unit (Iso) to nutrition Calorie

1 BTU (ISO) (British thermal unit (ISO)) is equal to 0.2519967516958105 Cal (nutrition Calorie). To convert from British thermal unit (ISO) to nutrition Calorie, multiply by 0.25199675169581043 or divide by 3.968305120087885.

• 1 BTU (ISO) × 0.25199675169581 = 0.25199675169581 Cal
• 1 BTU (ISO) ÷ 3.9683051200879 = 0.25199675169581 Cal