Is N/mm2 equal to MPa?

Yes. 1 N/mm^2 is exactly 1 MPa.

How do I convert ksi to MPa?

Multiply ksi by approximately 6.894757293 to get MPa.

Is stress the same as pressure?

They share dimensions, but stress and pressure have different engineering meanings and sign conventions.

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Stress Converter

Convert stress units such as MPa, N/mm^2, psi, ksi, kgf/cm^2, and kgf/mm^2 with compression/tension sign support.

Stress Converter interface

Stress value

Enter a signed stress value. Negative stress may represent compression depending on convention.

Number format

Controls display only. Raw conversion values remain unrounded.

Negative stress can represent compression in many sign conventions; confirm the convention used by your workflow.

From unit

To unit

Stress conversions are performed locally in your browser and are not submitted to a third-party calculation API.

Result section

okFixed decimal, 4 places

Primary converted value

1 MPa = 145.0377 psi

Pound-force per square inch from Megapascal.

Secondary results

Original input: 1 MPa
Base-unit normalization: 1,000,000.0000 Pa
Conversion method: 1 MPa = 145.0377377 psi

Unit conversion summary

1 MPa = 145.0377 psi

Reverse conversion: 145.0377 psi converts back to 1 MPa.

Assumptions

Pascal is the internal stress base unit.
Stress signs depend on tensile/compressive or solver-specific conventions.

Calculation steps

Validate input and unitsMegapascal to Pound-force per square inch
Normalize input to pascal1,000,000.0000 Pa
Convert base value to target unit145.0377 psi
Generate all-unit comparison tableEach row is converted from the same normalized base value.

Stress unit conversion

\sigma_{base}=\sigma_{input}\times F_{from};\quad \sigma_{output}=\sigma_{base}/F_{to}

sigma_base = sigma_input x factor_from; sigma_output = sigma_base / factor_to.

1 MPa x 1,000,000 Pa/MPa = 1,000,000.0000 Pa

1,000,000.0000 Pa / 6,894.757293 Pa/psi = 145.0377 psi

All-unit comparison table

Every row is converted from the same normalized base value, not from a rounded display result.

Input stress converted to all supported units
Unit name	Symbol	Converted value	Group	Status
Pascal	Pa	1,000,000.0000 Pa	SI	comparison
Kilopascal	kPa	1,000.0000 kPa	Metric	comparison
Megapascal	MPa	1.0000 MPa	Metric	source
Gigapascal	GPa	0.0010 GPa	Metric	comparison
Newton per square meter	N/m^2	1,000,000.0000 N/m^2	SI equivalent	comparison
Newton per square millimeter	N/mm^2	1.0000 N/mm^2	Metric equivalent	comparison
Newton per square centimeter	N/cm^2	100.0000 N/cm^2	Metric equivalent	comparison
Pound-force per square inch	psi	145.0377 psi	US customary	target
Kilopound-force per square inch	ksi	0.1450 ksi	US customary	comparison
Kilogram-force per square centimeter	kgf/cm^2	10.1972 kgf/cm^2	Gravity stress	comparison
Kilogram-force per square millimeter	kgf/mm^2	0.1020 kgf/mm^2	Gravity stress	comparison

Technical visual

Axial stress relates applied force to a cross-sectional area.

Engineering interpretation

Stress is force divided by area.
Normal and shear stresses can use different sign conventions depending on context.

What is a stress converter?

Convert stress units for mechanics, FEA, material data sheets, and structural calculations without treating stress as an independent company or safety assessment.

How to use the stress converter

Enter the stress value. Scientific notation such as 1e6 is supported.
Choose the source unit and target unit.
Select automatic, fixed-decimal, significant-figure, or scientific display formatting.
Review the primary result, base-unit normalization, formula substitution, and all-unit comparison table.
Copy the result, copy a share link with safe URL state, or print the calculation summary when needed.

Supported stress units

Supported units include Pa, kPa, MPa, GPa, N/m^2, N/mm^2, N/cm^2, psi, ksi, kgf/cm^2, and kgf/mm^2.

Stress conversion formula

Stress values normalize to pascal before conversion. MPa and N/mm^2 are equivalent magnitudes.

Notation

Formula notation
Symbol	Meaning	Unit
x_input	Entered value	selected source unit
F_from	Source-unit factor or formula to base unit	base Pa
x_base	Normalized base-unit value	Pa
F_to	Target-unit factor or formula from base unit	base Pa
x_output	Converted output value	selected target unit

Worked examples

1 MPa to N/mm^2

Method: sigma_base = sigma_input x factor_from; sigma_output = sigma_base / factor_to.

Result: 1 MPa = 1.0000 N/mm^2

1 ksi to MPa

Method: sigma_base = sigma_input x factor_from; sigma_output = sigma_base / factor_to.

Result: 1 ksi = 6.894757 MPa

-100 MPa to psi

Method: sigma_base = sigma_input x factor_from; sigma_output = sigma_base / factor_to.

Result: -100 MPa = -14,503.7738 psi

For engineering, simulation, and research work

The Stress Converter uses the centralized stress quantity while keeping stress content, examples, and interpretation separate from pressure.

Common mistakes

Treating a converted stress as a factor of safety.
Confusing stress with pressure semantics.
Forgetting that N/mm^2 equals MPa.

Limitations

This converter does not compute stress from geometry or load.
It does not assess yielding, buckling, fatigue, or safety.

Technical notes

Negative stress can represent compression in many sign conventions; confirm the convention used by your workflow.
This converter does not compute stress from geometry or load.
It does not assess yielding, buckling, fatigue, or safety.

References

NIST SP 811: NIST Special Publication 811, Guide for the Use of the International System of Units (SI).
BIPM SI Brochure: Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition.
ISO 80000: ISO 80000 quantities and units series.

Professional support from ScholarEase Consultancy Services LLP

Professional support is available for engineering calculations, CFD and FEA projects, data analysis, MATLAB/Python work, technical documentation, and research support. The converter remains free to use without purchasing services.

Visit ScholarEase

Engineering disclaimer

This tool is intended for educational, estimation, and preliminary engineering use. Always verify critical engineering calculations with applicable standards, validated software, and qualified professional judgment before using results in real design, manufacturing, construction, safety, or compliance decisions.

Need Professional Support?

ScholarTool is powered by ScholarEase Consultancy Services LLP. Professional engineering, simulation, research, and technical documentation support is available through the connected services website.

Visit ScholarEase

Last reviewed: 2026-06-19

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Stress Converter interface

Stress value

Enter a signed stress value. Negative stress may represent compression depending on convention.

Number format

Controls display only. Raw conversion values remain unrounded.

Negative stress can represent compression in many sign conventions; confirm the convention used by your workflow.

From unit

To unit

Stress conversions are performed locally in your browser and are not submitted to a third-party calculation API.

Result section

okFixed decimal, 4 places

Primary converted value

1 MPa = 145.0377 psi

Pound-force per square inch from Megapascal.

Secondary results

Original input: 1 MPa
Base-unit normalization: 1,000,000.0000 Pa
Conversion method: 1 MPa = 145.0377377 psi

Unit conversion summary

1 MPa = 145.0377 psi

Reverse conversion: 145.0377 psi converts back to 1 MPa.

Assumptions

Pascal is the internal stress base unit.
Stress signs depend on tensile/compressive or solver-specific conventions.

Calculation steps

Validate input and unitsMegapascal to Pound-force per square inch
Normalize input to pascal1,000,000.0000 Pa
Convert base value to target unit145.0377 psi
Generate all-unit comparison tableEach row is converted from the same normalized base value.

Stress unit conversion

\sigma_{base}=\sigma_{input}\times F_{from};\quad \sigma_{output}=\sigma_{base}/F_{to}

sigma_base = sigma_input x factor_from; sigma_output = sigma_base / factor_to.

1 MPa x 1,000,000 Pa/MPa = 1,000,000.0000 Pa

1,000,000.0000 Pa / 6,894.757293 Pa/psi = 145.0377 psi

All-unit comparison table

Every row is converted from the same normalized base value, not from a rounded display result.

Input stress converted to all supported units
Unit name	Symbol	Converted value	Group	Status
Pascal	Pa	1,000,000.0000 Pa	SI	comparison
Kilopascal	kPa	1,000.0000 kPa	Metric	comparison
Megapascal	MPa	1.0000 MPa	Metric	source
Gigapascal	GPa	0.0010 GPa	Metric	comparison
Newton per square meter	N/m^2	1,000,000.0000 N/m^2	SI equivalent	comparison
Newton per square millimeter	N/mm^2	1.0000 N/mm^2	Metric equivalent	comparison
Newton per square centimeter	N/cm^2	100.0000 N/cm^2	Metric equivalent	comparison
Pound-force per square inch	psi	145.0377 psi	US customary	target
Kilopound-force per square inch	ksi	0.1450 ksi	US customary	comparison
Kilogram-force per square centimeter	kgf/cm^2	10.1972 kgf/cm^2	Gravity stress	comparison
Kilogram-force per square millimeter	kgf/mm^2	0.1020 kgf/mm^2	Gravity stress	comparison

How to use the stress converter

Enter the stress value. Scientific notation such as 1e6 is supported.
Choose the source unit and target unit.
Select automatic, fixed-decimal, significant-figure, or scientific display formatting.
Review the primary result, base-unit normalization, formula substitution, and all-unit comparison table.
Copy the result, copy a share link with safe URL state, or print the calculation summary when needed.

Symbol

Meaning

Unit

x_input

Entered value

selected source unit

F_from

Source-unit factor or formula to base unit

base Pa

x_base

Normalized base-unit value

F_to

Target-unit factor or formula from base unit

base Pa

x_output

Converted output value

selected target unit

Worked examples

1 MPa to N/mm^2

Method: sigma_base = sigma_input x factor_from; sigma_output = sigma_base / factor_to.

Result: 1 MPa = 1.0000 N/mm^2

1 ksi to MPa

Method: sigma_base = sigma_input x factor_from; sigma_output = sigma_base / factor_to.

Result: 1 ksi = 6.894757 MPa

-100 MPa to psi

Method: sigma_base = sigma_input x factor_from; sigma_output = sigma_base / factor_to.

Result: -100 MPa = -14,503.7738 psi

Engineering disclaimer

Stress Converter interface

Result section

Secondary results

Unit conversion summary

Assumptions

Calculation steps

Stress unit conversion

All-unit comparison table

Technical visual

Engineering interpretation

What is a stress converter?

How to use the stress converter

Supported stress units

Stress conversion formula

Notation

Worked examples

1 MPa to N/mm^2

1 ksi to MPa

-100 MPa to psi

For engineering, simulation, and research work

Common mistakes

Limitations

Technical notes

References

Professional support from ScholarEase Consultancy Services LLP

Related tools

Print summary

Engineering disclaimer

Need Professional Support?

Stress Converter interface

Result section

Secondary results

Unit conversion summary

Assumptions

Calculation steps

Stress unit conversion

All-unit comparison table

Technical visual

Engineering interpretation

What is a stress converter?

How to use the stress converter

Supported stress units

Stress conversion formula

Notation

Worked examples

1 MPa to N/mm^2

1 ksi to MPa

-100 MPa to psi

For engineering, simulation, and research work

Common mistakes

Limitations

Technical notes

References

Professional support from ScholarEase Consultancy Services LLP

Related tools

Print summary

Engineering disclaimer

Need Professional Support?