ConvertNavi

British thermal unit (IT) to Calorie (small) (BTU → cal)

Convert british thermal unit (it) to calorie (small) instantly. The conversion factor below is exact by international definition.

Realtime·energy·imperial
Exact
BTU
× 252.1644
cal
252.1644
Precision [auto]
6

📐BTU to cal formulaExact

cal = BTU × 252.164400721797
Inverse: BTU = cal × 0.003965666831

Worked example: 1 BTU = 252.164400721797 cal

ℹ️About these units

British thermal unit (IT) (BTU)
Source: International Table BTU.
Calorie (small) (cal)
Source: Thermochemical calorie (NIST).

📊Reference table: BTU → cal

British thermal unit (IT) (BTU)Calorie (small) (cal)
1252.1644
2504.3288
51,260.82
102,521.64
153,782.47
205,043.29
256,304.11
5012,608.22
10025,216.44
25063,041.1
500126,082.2
750189,123.3
1,000252,164.4

Want a downloadable CSV? Append ?format=csv to the API /api/v1/table endpoint.

🔁Reverse & related

Reverse: cal → BTUBTU → kJBTU → JBTU → MJBTU → GJBTU → kcalBTU → WhBTU → kWhBTU → MWh

🔌API & widget

GET https://convertnavi.com/api/v1/convert?value=10&from=btu&to=calorie
Embed this converter
<div data-convertnavi="btu->calorie"></div>
<script async src="https://convertnavi.com/embed.js"></script>