Pound per square inch to Megapascal Converter (and vice versa)

Created by: tinycalcs.com/en
Number of supported units: 2
Last update: 2026

This converter allows you to convert pounds per square inch [lb/in²] to megapascals [MPa] or megapascals [MPa] to pounds per square inch [lb/in²]. Calculations are performed in both directions. The calculation result and the entered value are displayed with up to 20 decimal places for maximum accuracy.

1 pound per square inch [lb/in²] ≈ 0.0069 megapascals [MPa]1 megapascal [MPa] ≈ 145.0377 pounds per square inch [lb/in²]

Convert pounds per square inch to megapascals

There are two simple ways to convert pounds per square inch [lb/in²] to megapascals [MPa]. In the first calculation method, the value in pounds per square inch [lb/in²] is divided by the rounded conversion factor of 145.0377. The second method multiplies the value in pounds per square inch [lb/in²] by the rounded conversion factor of 0.0069.

  • Megapascals [MPa] ≈ pounds per square inch [lb/in²] ÷ 145.0377
  • Megapascals [MPa] ≈ pounds per square inch [lb/in²] * 0.0069

However, rounded conversion values are only suitable for rough conversions, as rounding errors can occur in the calculation result. The most accurate conversion of pounds per square inch [lb/in²] to megapascals [MPa] can be achieved using the following calculation method.

  • Megapascals [MPa] = pounds per square inch [lb/in²] * 45.359237 * 9.80665 ÷ 64,516

Convert megapascals to pounds per square inch

Converting megapascals [MPa] to pounds per square inch [lb/in²] is easy and can be done in two ways. The first method involves multiplication, in which the value in megapascals [MPa] is multiplied by the rounded conversion factor of 145.0377. The second variant is a division. Here, the value in megapascals [MPa] is divided by the rounded conversion factor of 0.0069.

  • Pounds per square inch [lb/in²] ≈ megapascals [MPa] * 145.0377
  • Pounds per square inch [lb/in²] ≈ megapascals [MPa] ÷ 0.0069

However, rounded conversion values do not allow for exact calculations because rounding errors can occur in the calculation result. The most accurate conversion of megapascals [MPa] to pounds per square inch [lb/in²] can be achieved using the following calculation method.

  • Pounds per square inch [lb/in²] = megapascals [MPa] ÷ 45.359237 ÷ 9.80665 * 64,516

Converter

Decimal places

How it's calculated

Factor: 
≈ 145.038
Megapascals = Pounds per square inch * 45.359237 * 9.80665 ÷ 64,516
Pounds per square inch = Megapascals ÷ 45.359237 ÷ 9.80665 * 64,516

To all available units

Pounds per square inch

Meters of water

Pounds per square inch

Metric tons per square centimeter

Pounds per square inch

Metric tons per square meter

Pounds per square inch

Microbar

Pounds per square inch

Micropascals

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