What Is This Tool?
This unit converter transforms power values measured in picojoule per second into calorie (IT) per hour, facilitating interpretation of very low power levels in electronic, photonic, and thermal contexts.
How to Use This Tool?
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Enter the value in picojoule per second (pJ/s) you want to convert.
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Select the from-unit as picojoule/second [pJ/s].
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Choose the to-unit as calorie (IT)/hour [cal/h].
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Click convert to see the equivalent power in calorie (IT)/hour.
Key Features
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Converts picojoule/second (pJ/s), a unit for extremely small power values, to calorie (IT)/hour (cal/h), which measures tiny heat flow rates.
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Supports applications in microelectronics, photonics, thermal testing, and calorimetry.
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Uses a precise conversion factor based on defined international units.
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Browser-based and easy to use without additional software.
Examples
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1 picojoule/second equals approximately 8.5984522785898 × 10⁻¹⁰ calorie (IT)/hour.
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1,000 picojoule/second converts to about 8.5984522785898 × 10⁻⁷ calorie (IT)/hour.
Common Use Cases
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Determining continuous power draw in ultra-low-power microcontrollers and sensors.
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Reporting optical power in sensitive photonic detectors equivalent to picowatts.
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Expressing energy consumption rates for low-energy digital circuits as power.
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Translating low-level power measurements into heat flow rates for thermal analysis.
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Interpreting historical data or technical literature that uses calories instead of SI units.
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Estimating minor heat losses or gains in small laboratory or experimental setups.
Tips & Best Practices
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Ensure correct unit selection to avoid conversion errors.
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Handle very small numeric values carefully to maintain significant figures.
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Use this conversion primarily for tiny power and heat flow rates where these units are relevant.
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Cross-check results when precision is critical due to the very small magnitudes involved.
Limitations
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Conversion involves extremely small numerical values which may lead to rounding issues.
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The calorie (IT)/hour unit is less common in modern applications compared to SI units.
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Accuracy depends on careful handling of significant digits for very low power measurements.
Frequently Asked Questions
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Why convert picojoule/second to calorie (IT)/hour?
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This conversion allows comparing ultra-low continuous power measurements with heat flow rates typically used in calorimetry and thermal studies.
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Is calorie (IT)/hour commonly used today?
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Calorie (IT)/hour is now rarely used, with many preferring SI units, but it remains important for interpreting older technical literature or specific thermal applications.
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Can I use this converter for large power values?
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No, this converter is designed for very small power and heat flow rates; larger values are better expressed in other standard units.
Key Terminology
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Picojoule/second [pJ/s]
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A unit of power equal to 10⁻¹² joules per second, representing extremely low continuous power levels in microelectronics and photonics.
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Calorie (IT)/hour [cal/h]
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A power unit indicating the rate of energy transfer of one International Table calorie per hour, used for small heat flow rates in thermal contexts.