BTU per Hour (IT) to Ton of Refrigeration (TR) Converter
Power · unit-converter
Convert BTU per Hour (IT) to Ton of Refrigeration (TR) 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: BTU per Hour (IT) (btu_hr)
To: Ton of Refrigeration (TR) (tr)
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.
About Ton of Refrigeration (TR)
One ton of refrigeration (TR) equals 12,000 BTU/h (IT), approximately 3,516.85 W. It is widely used in HVAC and refrigeration sizing.
How to convert btu per hour (it) to tons of refrigeration (tr)
1 btu per hour (it) is equal to 0.00008333333333 ton of refrigeration (tr) when both are expressed in watt-equivalents:
1 btu_hr = (0.2930710701722222 W ÷ 3,516.8528420666667 W) tr = 0.00008333333333 tr
Each btu per hour (it) is defined as 0.2930710701722222 W and each ton of refrigeration (tr) as 3,516.8528420666667 W in this tool, so one btu_hr equals 0.2930710701722222 ÷ 3,516.8528420666667 tr = 0.00008333333333 tr.
Let d(btu_hr) be the numeric value in BTU per Hour (IT) (btu_hr), and d(tr) the value in Ton of Refrigeration (TR) (tr). Then:
d(tr) = d(btu_hr) × (0.2930710701722222 / 3,516.8528420666667)
Equivalently, divide by how many btu_hr fit into one tr (watts per tr divided by watts per btu_hr):
d(tr) = d(btu_hr) ÷ 12000
Or: ton of refrigeration (tr) = btu per hour (it) ÷ 12000
Examples
Example #1: Convert 1 btu_hr to ton of refrigeration (tr)
1 btu_hr = 1 btu_hr × (0.2930710701722222/3,516.8528420666667) tr = 0.0000833333 tr
1 btu_hr = 1 btu_hr ÷ 12000 = 0.0000833333 tr
Intermediate watts: 0.2930710702 W
Example #2: Convert 10 btu_hr to ton of refrigeration (tr)
10 btu_hr = 10 btu_hr × (0.2930710701722222/3,516.8528420666667) tr = 0.0008333333 tr
10 btu_hr = 10 btu_hr ÷ 12000 = 0.0008333333 tr
Intermediate watts: 2.9307107017 W
Summary
To convert BTU per Hour (IT) to Ton of Refrigeration (TR), multiply the value in btu_hr by the ratio of watts per btu_hr divided by watts per tr. Equivalently: value_tr = value_btu_hr × (0.2930710701722222 / 3516.8528420666667). Numerically, 1 btu_hr equals 0.00008333333333333333 tr.
Relationship context
You are converting between thermal engineering rates (BTU/h, kcal/h) (BTU per Hour (IT)) and apparent power at unity PF (VA) (Tons of Refrigeration (TR)). All linear values are mapped through watts first. The numeric factor is 8.333333e-5.
Conversion tables
| BTU per Hour (IT) (btu_hr) | Ton of Refrigeration (TR) (tr) |
|---|---|
| 0.1 | 0.0000083333 |
| 1 | 0.0000833333 |
| 2 | 0.0001666667 |
| 3 | 0.00025 |
| 4 | 0.0003333333 |
| 5 | 0.0004166667 |
| 6 | 0.0005 |
| 7 | 0.0005833333 |
| 8 | 0.0006666667 |
| 9 | 0.00075 |
| BTU per Hour (IT) (btu_hr) | Ton of Refrigeration (TR) (tr) |
|---|---|
| 10 | 0.0008333333 |
| 20 | 0.0016666667 |
| 30 | 0.0025 |
| 40 | 0.0033333333 |
| 50 | 0.0041666667 |
| 60 | 0.005 |
| 70 | 0.0058333333 |
| 80 | 0.0066666667 |
| 90 | 0.0075 |
| 100 | 0.0083333333 |