Degrees Fahrenheit per 100 feet to kelvins per kilometer
Type a value in °F/100 ft to get it in K/km instantly.
178.6K/km
That's 7.1× as steep as the geothermal gradient — nothing on our list beats it. Climbing the 3,800 m from Chamonix to the top of Mont Blanc, that is 678.8 °C colder.
What it means
How fast does it cool?
Real lapse rates change with humidity, time of day and weather; inversions make them negative.
The math
How to convert °F/100 ft to K/km
To convert degrees Fahrenheit per 100 feet to kelvins per kilometer, multiply by 18.2269.
Example: 9.8 °F/100 ft × 18.2269 = 178.624 K/km.
In the other direction, 1 K/km = 0.054864 °F/100 ft.
Every unit
Your lapse rate in every unit
Tables
°F/100 ft to K/km conversion table
| °F/100 ft | K/km |
|---|---|
| 1 °F/100 ft | 18.2269 K/km |
| 2 °F/100 ft | 36.4538 K/km |
| 3 °F/100 ft | 54.6807 K/km |
| 4 °F/100 ft | 72.9076 K/km |
| 5 °F/100 ft | 91.1344 K/km |
| 6 °F/100 ft | 109.361 K/km |
| 6.5 °F/100 ft | 118.475 K/km |
| 7 °F/100 ft | 127.588 K/km |
| 8 °F/100 ft | 145.815 K/km |
| 9 °F/100 ft | 164.042 K/km |
| 9.8 °F/100 ft | 178.624 K/km |
| 10 °F/100 ft | 182.269 K/km |
| 15 °F/100 ft | 273.403 K/km |
| 20 °F/100 ft | 364.538 K/km |
| 25 °F/100 ft | 455.672 K/km |
| 30 °F/100 ft | 546.807 K/km |
K/km to °F/100 ft conversion table
| K/km | °F/100 ft |
|---|---|
| 1 K/km | 0.054864 °F/100 ft |
| 2 K/km | 0.109728 °F/100 ft |
| 3 K/km | 0.164592 °F/100 ft |
| 4 K/km | 0.219456 °F/100 ft |
| 5 K/km | 0.27432 °F/100 ft |
| 6 K/km | 0.329184 °F/100 ft |
| 6.5 K/km | 0.356616 °F/100 ft |
| 7 K/km | 0.384048 °F/100 ft |
| 8 K/km | 0.438912 °F/100 ft |
| 9 K/km | 0.493776 °F/100 ft |
| 9.8 K/km | 0.537667 °F/100 ft |
| 10 K/km | 0.54864 °F/100 ft |
| 15 K/km | 0.82296 °F/100 ft |
| 20 K/km | 1.09728 °F/100 ft |
| 25 K/km | 1.3716 °F/100 ft |
| 30 K/km | 1.64592 °F/100 ft |
Quick answers
Quick answers
- How many K/km is 1 °F/100 ft?
- 1 °F/100 ft is 18.2269 K/km.
- How many K/km is 10 °F/100 ft?
- 10 °F/100 ft is 182.269 K/km.
- How many K/km is 9.8 °F/100 ft?
- 9.8 °F/100 ft is 178.624 K/km.
The units
About these units
Degrees Fahrenheit per 100 feet (°F/100 ft)
US drilling and well logs.
Kelvins per kilometer (K/km)
The meteorology and geology unit.
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