Convert Picowatts to Calories per Hour
Convert Picowatts (pW) to Calories per Hour (cal/h) instantly and accurately.
Conversion Formula
cal/h = pW × 8.598452279e-10
About Picowatts
A picowatt (pW) is 10⁻¹² W - the power scale of the most sensitive radio receivers. GPS satellites transmit 20-50 W; by the time that signal spans 20,000 km, the received power is ~0.1 pW (−130 dBm). Radio telescopes routinely detect cosmic signals in the picowatt range. Qubit control electronics in quantum computers must resolve energy differences at picowatt scales. Photodetectors in single-photon counting mode, hard drive head read-back signals at idle, and deep-shadow solar cells also operate at picowatt levels. 1 pW = 10⁻¹² W.
About Calories per Hour
One calorie per hour (cal/h) equals exactly 0.001163 W - the rate of transferring one thermochemical calorie (4.1868 J) per hour. A resting adult generates ~70-80 W ≈ 60,000-70,000 cal/h of heat. The unit appears in European and Asian HVAC standards for small-appliance heat loads and in laboratory calorimetry reporting metabolic activity of small organisms. Calorimetric enzyme assays also express catalytic heat in cal/h per unit enzyme. 1 cal/h = 0.001163 W.
Quick Reference Table
| Picowatts (pW) | Calories per Hour (cal/h) |
|---|---|
| 1 pW | 8.598 × 10-10 cal/h |
| 2 pW | 1.72 × 10-9 cal/h |
| 5 pW | 4.299 × 10-9 cal/h |
| 10 pW | 8.598 × 10-9 cal/h |
| 25 pW | 2.15 × 10-8 cal/h |
| 50 pW | 4.299 × 10-8 cal/h |
| 100 pW | 8.598 × 10-8 cal/h |