Terapascal is 1000000000000 pascal units.
Terapascals to Quettapascals Converter — TPa to QPa
Convert Terapascal (TPa) to Quettapascal (QPa) using the exact conversion factor (1 terapascal = 1e-18 quettapascal). See the formula, worked examples, and conversion table.
Terapascals to Quettapascals 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.
Quettapascal is 1e+30 pascal units.
Result = input x 1e+12 / 1e+30.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Terapascals to Quettapascals
Terapascal and Quettapascal 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: Terapascal is 1000000000000 pascal units, and quettapascal is 1e+30 pascal units.
Formula
quettapascals = terapascals × 1e-18
This factor comes from each unit's defined relationship to the category's base unit: 1 terapascal equals 1e+12 base units, and 1 quettapascal equals 1e+30 base units, so dividing one by the other gives the direct terapascal-to-quettapascal factor of 1e-18.
Simple example
1 TPa × 1e-18 = 1e-18 QPa
1 terapascal = 1e-18 quettapascals.
Real-world example
35 TPa × 1e-18 = 3.5e-17 QPa
35 terapascals = 3.5e-17 quettapascals.
Conversion table
| Terapascal (TPa) | Quettapascal (QPa) |
|---|---|
| 1 TPa | 1e-18 QPa |
| 5 TPa | 5e-18 QPa |
| 10 TPa | 1e-17 QPa |
| 25 TPa | 2.5e-17 QPa |
| 50 TPa | 5e-17 QPa |
| 100 TPa | 1e-16 QPa |
Reverse conversion: Quettapascal to Terapascal
1e-18 QPa × 1e+18 = 1 TPa
1e-18 quettapascals = 1 terapascals.
terapascals = quettapascals × 1e+18
For a page dedicated to this direction, see Quettapascal to Terapascal.
Understanding the Terapascal (TPa)
Terapascal is 1000000000000 pascal units.
Understanding the Quettapascal (QPa)
Quettapascal is 1e+30 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many quettapascals are in 1 terapascal?
1 terapascal equals 1e-18 quettapascals, using the exact defined conversion factor rather than an estimate.
How do I convert terapascal to quettapascal?
Multiply the terapascal value by 1e-18. The converter above does this instantly to whatever precision you set.
How do I convert quettapascal back to terapascal?
Use the reverse factor: 1 quettapascal equals 1e+18 terapascals. You can also use the swap control in the converter above to flip the direction instantly.
What is a terapascal?
Terapascal (TPa) is a unit of pressure.
What is a quettapascal?
Quettapascal (QPa) is a unit of pressure.
Is the terapascal to quettapascal conversion exact?
Yes. Both terapascal and quettapascal are defined by fixed standards rather than physical artifacts, so the factor of 1e-18 used above is exact to as many digits as you choose to display.