Kilocalorie per Hour (thermochemical) to BTU per Hour (IT) Converter
Power · unit-converter
Convert Kilocalorie per Hour (thermochemical) to BTU per Hour (IT) with a fixed input and output unit, step-by-step formula line, and reference tables. Linear units use SI watt definitions; mechanical hp uses 550 ft·lbf/s; BTU/h uses the IT BTU; dBm/dBW are logarithmic relative to 1 mW and 1 W. The full Power Converter also includes PS/CV, TR, kVA/MVA, and ft·lb/s.
Calculator
From: Kilocalorie per Hour (thermochemical) (kcal_h)
To: BTU per Hour (IT) (btu_hr)
About Kilocalorie per Hour (thermochemical)
Kilocalories per hour is a thermal power rate using the thermochemical kilocalorie (4,184 J per kcal) spread over one hour.
About BTU per Hour (IT)
BTU per hour expresses thermal power using the IT British thermal unit (≈ 1,055.056 J per BTU), divided by one hour. Common in HVAC equipment ratings.
How to convert kilocalories per hour (thermochemical) to btu per hour (it)
1 kilocalorie per hour (thermochemical) is equal to 3.96566683139092 btu per hour (it) when both are expressed in watt-equivalents:
1 kcal_h = (1.1622222222222223 W ÷ 0.2930710701722222 W) btu_hr = 3.96566683139092 btu_hr
Each kilocalorie per hour (thermochemical) is defined as 1.1622222222222223 W and each btu per hour (it) as 0.2930710701722222 W in this tool, so one kcal_h equals 1.1622222222222223 ÷ 0.2930710701722222 btu_hr = 3.96566683139092 btu_hr.
Let d(kcal_h) be the numeric value in Kilocalorie per Hour (thermochemical) (kcal_h), and d(btu_hr) the value in BTU per Hour (IT) (btu_hr). Then:
d(btu_hr) = d(kcal_h) × (1.1622222222222223 / 0.2930710701722222)
Equivalently, divide by how many kcal_h fit into one btu_hr (watts per btu_hr divided by watts per kcal_h):
d(btu_hr) = d(kcal_h) ÷ 0.2521644007218
Or: btu per hour (it) = kilocalorie per hour (thermochemical) ÷ 0.2521644007218
Examples
Example #1: Convert 1 kcal_h to btu per hour (it)
1 kcal_h = 1 kcal_h × (1.1622222222222223/0.2930710701722222) btu_hr = 3.9656668314 btu_hr
1 kcal_h = 1 kcal_h ÷ 0.2521644007218 = 3.9656668314 btu_hr
Intermediate watts: 1.1622222222 W
Example #2: Convert 10 kcal_h to btu per hour (it)
10 kcal_h = 10 kcal_h × (1.1622222222222223/0.2930710701722222) btu_hr = 39.6566683139 btu_hr
10 kcal_h = 10 kcal_h ÷ 0.2521644007218 = 39.6566683139 btu_hr
Intermediate watts: 11.6222222222 W
Summary
To convert Kilocalorie per Hour (thermochemical) to BTU per Hour (IT), multiply the value in kcal_h by the ratio of watts per kcal_h divided by watts per btu_hr. Equivalently: value_btu_hr = value_kcal_h × (1.1622222222222223 / 0.2930710701722222). Numerically, 1 kcal_h equals 3.9656668313909194 btu_hr.
Relationship context
Both units are thermal engineering rates (BTU/h, kcal/h). Conversions use fixed watt factors, so results stay consistent with the definitions in this converter. The factor from Kilocalorie per Hour (thermochemical) to BTU per Hour (IT) is 3.965667e+0 (1 kcal_h = 3.9656668313909194 btu_hr).
Conversion tables
| Kilocalorie per Hour (thermochemical) (kcal_h) | BTU per Hour (IT) (btu_hr) |
|---|---|
| 0.1 | 0.3965666831 |
| 1 | 3.9656668314 |
| 2 | 7.9313336628 |
| 3 | 11.8970004942 |
| 4 | 15.8626673256 |
| 5 | 19.828334157 |
| 6 | 23.7940009883 |
| 7 | 27.7596678197 |
| 8 | 31.7253346511 |
| 9 | 35.6910014825 |
| Kilocalorie per Hour (thermochemical) (kcal_h) | BTU per Hour (IT) (btu_hr) |
|---|---|
| 10 | 39.6566683139 |
| 20 | 79.3133366278 |
| 30 | 118.970004942 |
| 40 | 158.626673256 |
| 50 | 198.28334157 |
| 60 | 237.940009883 |
| 70 | 277.596678197 |
| 80 | 317.253346511 |
| 90 | 356.910014825 |
| 100 | 396.566683139 |