Kilocalorie per Hour (thermochemical) to dBW Converter
Power · unit-converter
Convert Kilocalorie per Hour (thermochemical) to dBW 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: dBW (dbw)
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 dBW
dBW is a logarithmic power level relative to 1 W: P(W) = 10^(dBW/10). RF, microwave, and antenna work often use dBW with dBm.
How to convert kilocalories per hour (thermochemical) to decibels relative to 1 w (dbw)
dBm/dBW are logarithmic power levels. P_W = 10^((dBm − 30) / 10), P_W = 10^(dBW / 10), and inverse mappings use 10 × log₁₀(·) with P_W > 0.
From Kilocalorie per Hour (thermochemical), multiply by 1.1622222222222223 W per kcal_h to get watts, then apply the dBm formula (watts must be positive).
Examples
Example #1: Convert 10 kcal_h to dbw
10 kcal_h → 10.652892 dbw
Example #2: Convert 30 kcal_h to dbw
30 kcal_h → 15.424104 dbw
Summary
To convert Kilocalorie per Hour (thermochemical) to dBW, multiply by watts per kcal_h, then apply dBW: dBW = 10 × log₁₀(P_W), where P_W = value_kcal_h × 1.1622222222222223. Watts must be positive.
Relationship context
You are converting between thermal engineering rates (BTU/h, kcal/h) (Kilocalories per Hour (thermochemical)) and logarithmic RF levels (dBm) (Decibels relative to 1 W (dBW)). Log units (dBm/dBW) use base-10 definitions relative to 1 mW or 1 W; linear units map through watts first, then to or from the selected log unit. Only strictly positive power in watts maps to a real dB power value.
Conversion tables
| Kilocalorie per Hour (thermochemical) (kcal_h) | dBW (dbw) |
|---|---|
| 0.1 | -9.347108 |
| 1 | 0.652892 |
| 2 | 3.663192 |
| 3 | 5.424104 |
| 4 | 6.673492 |
| 5 | 7.642592 |
| 6 | 8.434404 |
| 7 | 9.103872 |
| 8 | 9.683792 |
| 9 | 10.195317 |
| Kilocalorie per Hour (thermochemical) (kcal_h) | dBW (dbw) |
|---|---|
| 10 | 10.652892 |
| 20 | 13.663192 |
| 30 | 15.424104 |
| 40 | 16.673492 |
| 50 | 17.642592 |
| 60 | 18.434404 |
| 70 | 19.103872 |
| 80 | 19.683792 |
| 90 | 20.195317 |
| 100 | 20.652892 |