How do I convert Kilocalorie (kcal) to BTU (IT)?

1 kcal equals 3.965667 btu using SI-based conversion and precise factors.

What is the formula to convert Kilocalorie (kcal) to BTU (IT)?

This is a linear unit conversion using a constant factor between units.

Yes, it uses exact definitions or standardized constants (e.g., 1 in = 25.4 mm).

Use the shareable URL pattern: /convert/kcal-to-btu/1

Category: Energy

Value From To Precision

3.965667 btu

1 kcal = 3.965667 btu

High-precision rounding: 6 decimals

We convert by pivoting through the SI base unit for Energy and applying exact factors where applicable.

Share this conversion: /convert/kcal-to-btu/1

Energy is capacity to do work; joules, calories, Wh and BTU are common.

Kilocalorie (kcal)

Food ‘Calorie’ (capital C) ≈ 4,184 J.

History: Nutrition labeling standard.

British thermal unit (BTU)

≈ 1,055.06 J (IT).

History: Steam age heat unit; HVAC standard.