Convert Kilopascals to Megapascals - Pressure Converter
This converter transforms a single pressure value from kilopascals (kPa) to megapascals (MPa) using the exact SI relationship: 1 kPa = 0.001 MPa. It is intended for quick unit conversion for engineering, lab records, documentation, and calculations that use SI pressure units.
Use the tool when you need a reliable numeric conversion between these two SI units. For measurement-critical work, confirm that your pressure instrument is calibrated and that the conversion precision aligns with measurement uncertainty and regulatory requirements.
Interactive Converter
Convert between kilopascal and megapascal with precision rounding.
Quick reference table
| Kilopascal | Megapascal |
|---|---|
| 1 kPa | 0 MPa |
| 5 kPa | 0.01 MPa |
| 10 kPa | 0.01 MPa |
| 25 kPa | 0.03 MPa |
| 50 kPa | 0.05 MPa |
| 100 kPa | 0.1 MPa |
Methodology
The conversion uses the fixed SI scale factor between the two units: 1 kilopascal equals 0.001 megapascals. No temperature, material, or additional physical properties affect the unit conversion because both units measure the same physical dimension (pressure).
Recommendations for high-trust results: keep track of instrument calibration certificates (traceable to national standards), round results according to significant-figure rules appropriate for your measurement uncertainty, and document any conversion in reports to comply with audit or regulatory traceability.
Worked examples
1000 kPa → 1.0 MPa
250 kPa → 0.25 MPa
101.325 kPa (standard atmospheric pressure) → 0.101325 MPa
Further resources
Expert Q&A
Is any temperature or gas type needed for this conversion?
No. This is a pure units conversion between two SI pressure units. Temperature, gas composition, and other physical conditions do not change the mathematical relationship between kPa and MPa.
How many significant figures should I keep?
Keep significant figures consistent with your measurement uncertainty and instrument specification. For display, use the same number of significant digits as the input or round according to the uncertainty interval; avoid presenting more precision than your measurement supports.
Does the converter account for instrument calibration or traceability?
No. The converter performs only the unit conversion. For calibrated measurements and regulatory compliance, ensure instruments are calibrated to national standards and retain calibration records as required by your procedures or applicable regulations.
What level of accuracy can I expect from this mathematical conversion?
The numerical relationship is exact (1 kPa = 0.001 MPa). Any loss of accuracy arises from numeric rounding in displays or from the precision of the input value. When reporting, include measurement uncertainty separately.
Sources & citations
- NIST Special Publication 811, Guide for the Use of the International System of Units (SI) — https://www.nist.gov/pml/special-publication-811
- ISO 80000-1 Quantities and units — Part 1: General — https://www.iso.org/standard/30669.html
- OSHA — U.S. Occupational Safety and Health Administration (regulatory guidance and standards) — https://www.osha.gov
- IEEE Standards Association — standards and publications — https://standards.ieee.org