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BTU to Calories Converter

Free instant BTU → cal converter. No signup, no uploads — everything is calculated privately in your browser.

1 BTU = 252.164 calories

Free and instant — every calculation runs in your browser. Nothing is uploaded.

Quick Answer

1 British thermal unit equals 252.164 calories. To convert btu to calories, multiply the value by this factor.

Key Facts

  • Reverse: 1 calorie = 0.00396567 btu.

BTU to Calories Formula

Formula: value × 252.164

Prefer to skip the math? Type any value in the converter above and it converts instantly.

BTU to Calories Conversion Table

BTU (BTU)Calories (cal)
1 BTU252.164 cal
2 BTU504.329 cal
5 BTU1,260.82 cal
10 BTU2,521.64 cal
25 BTU6,304.11 cal
50 BTU12,608.2 cal
100 BTU25,216.4 cal
250 BTU63,041.1 cal
500 BTU126,082 cal
1,000 BTU252,164 cal

Frequently Asked Questions

How do I convert btu to calories?

Enter the value above and the result appears instantly — the calculation runs entirely in your browser. Formula: value × 252.164.

What is the exact btu to calories conversion factor?

1 British thermal unit = 252.164 calories (shown to 6 significant figures — the converter itself computes at full precision). The reverse factor is 1 calorie = 0.00396567 btu.

What are some common btu to calories conversions?

1 BTU = 252.164 cal; 10 BTU = 2,521.64 cal; 100 BTU = 25,216.4 cal. Use the full conversion table below for more reference values.

Is a calorie the same as a food Calorie?

No — and the capital letter matters. A food Calorie (with a capital C) is a kilocalorie: 1,000 small calories. This converter treats them correctly: 1 kcal = 4.184 kJ = 1,000 cal. Energy labels on food almost always mean kilocalories, even where the label just says "calories".

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