Hours to Planck Times Converter
Enter the time in hours below to convert it to planck times.
Convert Hours to Planck Times
Enter a value in hours (hr) to convert to planck times (tₚ).
Hour to Planck Time Conversion Table
Table showing various hour measurements converted to planck times. Click any preset value or arrow to load it into the converter.
| Hours (hr) | Planck Times (tₚ) |
|---|---|
| 0.0000001 hr | 6.67749e+39 tₚ |
| 0.0000002 hr | 1.335498e+40 tₚ |
| 0.0000003 hr | 2.003247e+40 tₚ |
| 0.0000004 hr | 2.670996e+40 tₚ |
| 0.0000005 hr | 3.338745e+40 tₚ |
| 0.0000006 hr | 4.006494e+40 tₚ |
| 0.0000007 hr | 4.674243e+40 tₚ |
| 0.0000008 hr | 5.341992e+40 tₚ |
| 0.0000009 hr | 6.009741e+40 tₚ |
| 0.00000001 hr | 6.67749e+38 tₚ |
How to Convert Hours to Planck Times
To convert hours to planck times, multiply the time by the following conversion ratio: 6.67749e+46 planck times/hour.
Since one hour is equal to 6.67749e+46 planck times, you can use this simple formula to convert:
The time in planck times is equal to the time in hours multiplied by 6.67749e+46.
For example, here's how to convert 5 hours to planck times using the formula above.
How Many Planck Times Are in an Hour?
There are 6.67749e+46 planck times in an hour, which is why we use this value in the formula above.
Our hour to planck time calculator automatically converts your time measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
Hours and planck times are both units used to measure time. Keep reading to learn more about each unit.
What Is an Hour?
An hour is a unit of time equal to 3,600 seconds (s), the base unit for time. Equal to 60 minutes or 3,600 seconds. [1]
The hour is classified as a standard unit of time. Hours can be abbreviated as hr; for example, 1 hour can be written as 1 hr.
When working with hours (hr) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, hours (hr) are widely used across large-scale industrial, bulk, and macro-level time specifications within international standard workflows, engineering documentation, and technical data sheets.
What Is a Planck Time?
A planck time is a unit of time equal to 1/18,548,584,399,861,480,000,000,000,000,000,000,000,000,000 of a second (5.391247e-44 s). Time required for light to travel 1 Planck length in vacuum (~5.39×10⁻⁴⁴ s). [2]
The planck time is classified as a standard unit of time. Planck Times can be abbreviated as tₚ; for example, 1 planck time can be written as 1 tₚ.
When working with planck times (tₚ) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, planck times (tₚ) are widely used across fine-tolerance laboratory, analytical, and micro-scale time measurements within international standard workflows, engineering documentation, and technical data sheets.
When converting time between hours (hr) and planck times (tₚ), keep full floating-point precision (1 hr = 6.67749e+46 tₚ; 1 tₚ = 1.497569e-47 hr) during intermediate calculations and round only the final planck time figure to match your instrument tolerance.
More Hour & Planck Time Conversions
Need to calculate in the opposite direction? Use our planck times to hours calculator to switch your starting unit immediately. You can also explore related tools such as converting planck times to hours, converting hours to days, or converting hours to minutes.
Convert from Hours
Frequently Asked Questions
References
- [1]NIST OWM StandardNIST OWM (SI Units — Time)·Time Metrology Standard — Hours (hr) to Planck Times (tₚ)
- [2]BIPM SpecificationBIPM (SI Base Unit: Second (s))·Unit Specifications: Hour (hr) & Planck Time (tₚ)
- [3]NIST CUU ReferenceNIST CUU (Non-SI Units Accepted for Use (min, h, d))·Conversion Factors & Mathematical Basis (hr to tₚ)