Gigapascal is 1000000000 pascal units.
Gigapascals to Terapascals Converter — GPa to TPa
Convert Gigapascal (GPa) to Terapascal (TPa) using the exact conversion factor (1 gigapascal = 0.001 terapascal). See the formula, worked examples, and conversion table.
Gigapascals to Terapascals converter
Converter
Pressure Converter
Convert pascals, bars, PSI, atmospheres, mercury columns, water columns, and engineering pressure units.
Context values
Some unit families need one extra value for a physically accurate result.
Terapascal is 1000000000000 pascal units.
Result = input x 1e+9 / 1e+12.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Gigapascals to Terapascals
Gigapascal and Terapascal both show up on pressure gauges — psi is standard on US tire and tool specifications, while bar is the everyday pressure unit across most of the rest of the world. Specifically: Gigapascal is 1000000000 pascal units, and terapascal is 1000000000000 pascal units.
Formula
terapascals = gigapascals × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 gigapascal equals 1000000000 base units, and 1 terapascal equals 1e+12 base units, so dividing one by the other gives the direct gigapascal-to-terapascal factor of 0.001.
Simple example
1 GPa × 0.001 = 0.001 TPa
1 gigapascal = 0.001 terapascals.
Real-world example
35 GPa × 0.001 = 0.035 TPa
35 gigapascals = 0.035 terapascals.
Conversion table
| Gigapascal (GPa) | Terapascal (TPa) |
|---|---|
| 1 GPa | 0.001 TPa |
| 5 GPa | 0.005 TPa |
| 10 GPa | 0.01 TPa |
| 25 GPa | 0.025 TPa |
| 50 GPa | 0.05 TPa |
| 100 GPa | 0.1 TPa |
Reverse conversion: Terapascal to Gigapascal
0.001 TPa × 1000 = 1 GPa
0.001 terapascals = 1 gigapascal.
gigapascals = terapascals × 1000
For a page dedicated to this direction, see Terapascal to Gigapascal.
Understanding the Gigapascal (GPa)
Gigapascal is 1000000000 pascal units.
Understanding the Terapascal (TPa)
Terapascal is 1000000000000 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many terapascals are in 1 gigapascal?
1 gigapascal equals 0.001 terapascals, using the exact defined conversion factor rather than an estimate.
How do I convert gigapascal to terapascal?
Multiply the gigapascal value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert terapascal back to gigapascal?
Use the reverse factor: 1 terapascal equals 1,000 gigapascals. You can also use the swap control in the converter above to flip the direction instantly.
What is a gigapascal?
Gigapascal (GPa) is a unit of pressure.
What is a terapascal?
Terapascal (TPa) is a unit of pressure.
Is the gigapascal to terapascal conversion exact?
Yes. Both gigapascal and terapascal are defined by fixed standards rather than physical artifacts, so the factor of 0.001 used above is exact to as many digits as you choose to display.