Geothermal Gradient Calculator
Calculate temperature at depth from the geothermal gradient.
Inputs
°C
°C/km
km
mW/m²
W/(m·K)
Results
Temperature at Depth
105 °C
Depth for 150°C
4.5 km
Gradient from Heat Flow26 °C/km
Depth for 200°C6.2 km
Resource Grade (1=High)2
Temp From Heat Flow93
How to Use This Calculator
- Enter the surface temperature at your location in °C.
- Set the depth of interest in meters.
- Input the local geothermal gradient in °C/km (global average ~25–30 °C/km).
- Review the estimated temperature at depth.
- Deep direct-use and EGS projects require temperatures above 150 °C — check regional gradient maps.
Ad Placeholder
Related Calculators
Ground Temperature Calculator
Estimate undisturbed ground temperature at any depth and time of year.
Geothermal Well Design Calculator
Estimate well depth, casing, flow rate, and cost for a geothermal well.
Enhanced Geothermal Output Calculator
Calculate power output from an enhanced geothermal system (EGS).
Ad Placeholder