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Megapascals to Pounds per square inch

1 megapascal = 145.04 pounds per square inch · 1 psi = 0.0068948 MPa

1 megapascal = 145.04 pounds per square inch

How it’s calculated

psi = MPa × 145.0377377

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

  1. Find the conversion factor

    By definition 1 MPa = 1000000 Pa and 1 psi = 6894.75729316836 Pa, so 1 MPa = 145.037737730209 psi. Source: BIPM SI Brochure (9th ed.) (SI prefixes and accepted units); NIST SP 811 / Handbook 44.

  2. Multiply by the factor written as a fraction

    Put MPa in the denominator so it cancels, leaving psi.

  3. Calculate (unrounded)

  4. Round the answer

    Rounded to 5 significant figures.

Answer: 145.04 psi

1 MPa in other units

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

Permanent link to this conversion

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Quick examples

  • 1 megapascal = 145.04 pounds per square inch
  • 5 megapascals = 725.19 pounds per square inch
  • 10 megapascals = 1,450.4 pounds per square inch
  • 25 megapascals = 3,625.9 pounds per square inch
  • 100 megapascals = 14,504 pounds per square inch

About these units

Megapascal (MPa)

SI (metric)

1 MPa = 1000000 Pa

Source: BIPM SI Brochure (9th ed.) (SI prefixes and accepted units)

Pound per square inch (psi)

US & imperial (identical)

1 lbf/in² ≈ 6 894.757 Pa (derived from exact lbf and inch).

1 psi = 6894.757293 Pa

Source: NIST SP 811 / Handbook 44

Megapascals to pounds per square inch conversion table

megapascal (MPa) to pound per square inch (psi)
Megapascals (MPa)Pounds per square inch (psi)
1 MPa145.04 psi
5 MPa725.19 psi
10 MPa1,450.4 psi
20 MPa2,900.8 psi
25 MPa3,625.9 psi
30 MPa4,351.1 psi
36 MPa5,221.4 psi
40 MPa5,801.5 psi
50 MPa7,251.9 psi
60 MPa8,702.3 psi
75 MPa10,878 psi
100 MPa14,504 psi
150 MPa21,756 psi
200 MPa29,008 psi
250 MPa36,259 psi
300 MPa43,511 psi
355 MPa51,488 psi
400 MPa58,015 psi
500 MPa72,519 psi
1,000 MPa145,040 psi

Related conversions

Frequently asked questions

How do I convert megapascals to pounds per square inch?

Use psi = MPa × 145.0377377. Multiply the value in megapascals by 145.0377377.

How many pounds per square inch are in 1 megapascal?

1 megapascal (MPa) equals 145.04 pounds per square inch (psi); more precisely 145.0377377.

How many megapascals are in 1 pound per square inch?

1 pound per square inch (psi) equals 0.0068948 megapascals (MPa); more precisely 0.006894757293.

What is 10 MPa in psi?

10 megapascals = 1,450.4 pounds per square inch.

What is a pound per square inch?

1 lbf/in² ≈ 6 894.757 Pa (derived from exact lbf and inch).

Formula: psi = MPa × 145.0377377. Factors last reviewed 2026-10-27.