megapascal to pound/sq inch Converter
Convert MPa to psi and back with a live reference table.
1 MPa = 145.038 psi\n5 MPa = 725.189 psi\n10 MPa = 1450.38 psi\n25 MPa = 3625.94 psi\n50 MPa = 7251.89 psi\n100 MPa = 14503.8 psi
Why this conversion matters
Megapascals are common for materials and hydraulics, while psi is still widely used in US product documentation. The widget keeps the direction explicit so you can enter either side of the pair without doing the reciprocal by hand. It is built for quick checks where a calculator, specification sheet, recipe, map, or lab note uses the other unit.
For the default example, 1 MPa converts to 145.038 psi. Switching the direction shows the inverse relationship, so 145.038 psi converts back to 1 MPa with the same factor.
Formula and privacy note
The calculation uses 1 MPa = 145.038 psi. Forward conversion multiplies by that factor, and reverse conversion divides by it. Results are rounded to six significant figures for readable estimates, so very small scientific units and large planning units stay scannable. Check the unit labels before copying a result, especially when similar abbreviations appear in the same project. The reference table is generated from the same constant, and everything runs locally in your browser.
Frequently Asked Questions
What factor does this converter use?
It uses the standard factor 1 MPa = 145.038 psi, then applies the reciprocal for the reverse direction.
Why are results rounded?
The main result is rounded to six significant figures so very large and very small values stay readable while preserving the useful precision for quick checks.
Can I convert both directions?
Yes. Choose MPa to psi or psi to MPa from the direction menu and the output updates immediately.
Is this converter private?
Yes. The conversion runs entirely in your browser, and the value you enter is not uploaded or stored.
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