Convert Pascals to Megapascals - Pressure Converter

This converter performs a direct SI unit conversion from kilopascals (kPa) to megapascals (MPa). The relationship is fixed and exact within the arithmetic of real numbers: 1 kPa equals 0.001 MPa.

The tool is intended for quick numeric conversion and documentation. For measurements used in engineering designs, calibration records, or regulatory reports, verify instrument calibration, range limits, and measurement uncertainty before reporting converted values.

Updated Nov 15, 2025QA PASS — golden 25 / edge 120Run golden-edge-2026-01-23

Governance

Record c51a4541f3df • Reviewed by Fidamen Standards Committee

Interactive Converter

Convert between kilopascal and megapascal with precision rounding.

Kilopascal (kPa)Megapascal (MPa)

Quick reference table

Kilopascal	Megapascal
KPA 1.00 kPa	MPA 0.00 MPa
KPA 5.00 kPa	MPA 0.01 MPa
KPA 10.00 kPa	MPA 0.01 MPa
KPA 25.00 kPa	MPA 0.03 MPa
KPA 50.00 kPa	MPA 0.05 MPa
KPA 100.00 kPa	MPA 0.10 MPa

Methodology

The conversion uses the International System of Units (SI) base Pascal (Pa) where 1 MPa = 1,000,000 Pa and 1 kPa = 1,000 Pa, yielding the precise ratio 1 kPa = 0.001 MPa.

When converting measured pressures, treat the numerical conversion separately from measurement uncertainty. Calibration and traceability to national standards are recommended for measurements cited in technical or regulatory contexts; refer to NIST guidance and ISO/IEC 17025 for calibration and laboratory competence.

For safety-critical applications, confirm sensor operating range and safety margins defined by applicable standards and regulations before applying converted values to design or compliance checks.

Worked examples

101.325 kPa → 101.325 × 0.001 = 0.101325 MPa (standard atmospheric pressure at sea level).

1000 kPa → 1000 × 0.001 = 1 MPa.

2500 kPa → 2500 × 0.001 = 2.5 MPa.

0 kPa → 0 MPa.

F.A.Q.

Is the conversion exact or approximate?

The mathematical conversion factor 0.001 is exact for converting kPa to MPa. Any approximation arises only from numeric rounding when displaying results.

How many decimal places should I report for engineering documents?

Report decimals consistent with the measurement uncertainty and the significant figures of the instrument. Do not imply greater precision than the calibrated instrument provides. For example, if sensor uncertainty is ±0.1 kPa, convert and round so reported significant figures reflect that uncertainty.

Do I need to calibrate instruments before converting?

Calibration is not required to perform a numeric unit conversion, but it is required to ensure the accuracy of measured values used in safety, compliance, or design work. Follow traceable calibration procedures per ISO/IEC 17025 and national guidance such as NIST publications.

Can I convert MPa back to kPa with the same tool?

Yes. The inverse conversion is kPa = MPa × 1000. Use the reverse numeric operation for converting measurement values reported in MPa to kPa.

Are there regulatory limits or safety rules I should check when working with pressure values?

Yes. Pressure equipment, vessel design, and workplace safety may be governed by regional and industry standards and regulations. Consult applicable OSHA guidance and the relevant engineering standards for minimum safety requirements and allowable working pressures.

Sources & citations

NIST - The International System of Units (SI) — https://www.nist.gov/pml/si-units
ISO/IEC 17025 — General requirements for the competence of testing and calibration laboratories — https://www.iso.org/standard/66912.html
IEEE Standards and Engineering Resources — https://standards.ieee.org
OSHA — Occupational Safety and Health Administration — https://www.osha.gov
ISO 80000-4:2019 — Mechanics — https://www.iso.org/standard/64975.html
NIST SP 811 — Guide for the Use of the International System of Units — https://www.nist.gov/pml/special-publication-811

Further resources

Related tools

External guidance

Versioning & Change Control

Audit record (versions, QA runs, reviewer sign-off, and evidence).

Record ID: c51a4541f3df

What changed (latest)

v1.0.0 • 2025-11-15 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Public QA status

PASS — golden 25 + edge 120

Last run: 2026-01-23 • Run: golden-edge-2026-01-23

Engine

v1.0.0

Data

Baseline (no external datasets)

Content

v1.0.0

Governance

Last updated: Nov 15, 2025

Reviewed by: Fidamen Standards Committee (Review board)

Credentials: Internal QA

Risk level: low

Reviewer profile (entity)

Fidamen Standards Committee

Review board

Internal QA

Entity ID: https://fidamen.com/reviewers/fidamen-standards-committee#person

Semantic versioning

MAJOR: Calculation outputs can change for the same inputs (formula, rounding policy, assumptions).
MINOR: New features or fields that do not change existing outputs for the same inputs.
PATCH: Bug fixes, copy edits, or accessibility changes that do not change intended outputs except for previously incorrect cases.

Review protocol

Verify formulas and unit definitions against primary standards or datasets.
Run golden-case regression suite and edge-case suite.
Record reviewer sign-off with credentials and scope.
Document assumptions, limitations, and jurisdiction applicability.

Assumptions & limitations

Uses exact unit definitions from the Fidamen conversion library.
Internal calculations use double precision; display rounding follows the unit's configured decimal places.
Not a substitute for calibrated instruments in regulated contexts.
Jurisdiction-specific rules may require official guidance.

Change log

v1.0.0 • 2025-11-15 • MINOR

Initial publication and governance baseline.

Why: Published with reviewed formulas, unit definitions, and UX controls.

Areas: engine, content, ui • Reviewer: Fidamen Standards Committee • Entry ID: c852de9e27da