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Gigapascals to Kips per square inch

1 gigapascal = 145.04 kips per square inch · 1 ksi = 0.0068948 GPa

1 gigapascal = 145.04 kips per square inch

How it’s calculated

ksi = GPa × 145.0377377

  • Multiply the value in gigapascals by 145.0377377.
  • To go back, divide by 145.0377377 (or multiply by 0.006894757293).
  • 1 GPa = 145.0377377 ksi · 1 ksi = 0.006894757293 GPa
Show worked solutionFactor, unit cancellation and rounding, step by step

  1. Find the conversion factor

    By definition 1 GPa = 1000000000 Pa and 1 ksi = 6894757.29316836 Pa, so 1 GPa = 145.037737730209 ksi. Source: BIPM SI Brochure (9th ed.); NIST SP 811 / Handbook 44.

  2. Multiply by the factor written as a fraction

    Put GPa in the denominator so it cancels, leaving ksi.

  3. Calculate (unrounded)

  4. Round the answer

    Rounded to 5 significant figures.

Answer: 145.04 ksi

1 GPa in other units

Batch convert GPa → ksi
Results
  1. 1 GPa = 145.04 ksi
  2. 5 GPa = 725.19 ksi
  3. 10 GPa = 1450.4 ksi
  4. 25 GPa = 3625.9 ksi

Permanent link to this conversion

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Quick examples

  • 1 gigapascal = 145.04 kips per square inch
  • 5 gigapascals = 725.19 kips per square inch
  • 10 gigapascals = 1,450.4 kips per square inch
  • 25 gigapascals = 3,625.9 kips per square inch
  • 100 gigapascals = 14,504 kips per square inch

About these units

Gigapascal (GPa)

SI (metric)

Exactly 10⁹ Pa. Used for elastic moduli (steel ≈ 200 GPa).

1 GPa = 1000000000 Pa

Source: BIPM SI Brochure (9th ed.)

Kip per square inch (ksi)

US customary

Exactly 1 000 psi ≈ 6.894 757 MPa. Used for material strength in US practice.

1 ksi = 6894757.293 Pa

Source: NIST SP 811 / Handbook 44

Gigapascals to kips per square inch conversion table

gigapascal (GPa) to kip per square inch (ksi)
Gigapascals (GPa)Kips per square inch (ksi)
1 GPa145.04 ksi
5 GPa725.19 ksi
10 GPa1,450.4 ksi
20 GPa2,900.8 ksi
25 GPa3,625.9 ksi
30 GPa4,351.1 ksi
36 GPa5,221.4 ksi
40 GPa5,801.5 ksi
50 GPa7,251.9 ksi
60 GPa8,702.3 ksi
75 GPa10,878 ksi
100 GPa14,504 ksi
150 GPa21,756 ksi
200 GPa29,008 ksi
250 GPa36,259 ksi
300 GPa43,511 ksi
355 GPa51,488 ksi
400 GPa58,015 ksi
500 GPa72,519 ksi
1,000 GPa145,040 ksi

Related conversions

Frequently asked questions

How do I convert gigapascals to kips per square inch?

Use ksi = GPa × 145.0377377. Multiply the value in gigapascals by 145.0377377.

How many kips per square inch are in 1 gigapascal?

1 gigapascal (GPa) equals 145.04 kips per square inch (ksi); more precisely 145.0377377.

How many gigapascals are in 1 kip per square inch?

1 kip per square inch (ksi) equals 0.0068948 gigapascals (GPa); more precisely 0.006894757293.

What is 10 GPa in ksi?

10 gigapascals = 1,450.4 kips per square inch.

Is the kip per square inch a US or a UK unit?

This converter uses the US customary kip per square inch. Exactly 1 000 psi ≈ 6.894 757 MPa. Used for material strength in US practice. US and UK units with the same name can differ, so check which one your source uses.

What is a gigapascal?

Exactly 10⁹ Pa. Used for elastic moduli (steel ≈ 200 GPa).

What is a kip per square inch?

Exactly 1 000 psi ≈ 6.894 757 MPa. Used for material strength in US practice.

Formula: ksi = GPa × 145.0377377. Factors last reviewed 2026-10-27.