Convert Pascals to Kilopascals - Pressure Converter
This tool converts pressure values measured in pascals (Pa) to kilopascals (kPa). The relationship is a fixed SI scaling: 1 kilopascal equals 1000 pascals.
The calculator performs an exact mathematical scaling and is intended for unit conversion only. For operational or safety decisions, consider the measurement uncertainty of your instruments and applicable regulations or standards.
Governance
Record 21c18b716c6c • Reviewed by Fidamen Standards Committee
Interactive Converter
Convert between pascal and kilopascal with precision rounding.
Quick reference table
| Pascal | Kilopascal |
|---|---|
| 1 Pa | KPA 0.00 kPa |
| 5 Pa | KPA 0.01 kPa |
| 10 Pa | KPA 0.01 kPa |
| 25 Pa | KPA 0.03 kPa |
| 50 Pa | KPA 0.05 kPa |
| 100 Pa | KPA 0.10 kPa |
Methodology
The conversion uses the International System of Units (SI) definition: 1 kPa = 1000 Pa. The calculator applies that exact ratio without introducing empirical corrections.
For engineering, testing, or regulatory use verify instrument calibration and uncertainty per national and international guidance. Follow NIST guidance on units and measurement, and consult ISO standards for measurement processes and uncertainty treatment. Refer to workplace safety rules from the appropriate authority when converting readings that inform hazard controls.
Worked examples
1000 Pa → 1 kPa
2500 Pa → 2.5 kPa
0 Pa → 0 kPa
-500 Pa → -0.5 kPa (negative values are valid numerically; interpret as gauge or absolute per measurement context)
F.A.Q.
What is the exact conversion factor between pascals and kilopascals?
Exactly 1 kilopascal equals 1000 pascals. Mathematically, divide pascals by 1000 to obtain kilopascals.
Is the calculator's result subject to measurement error?
The numerical conversion is exact. Real-world measurement error comes from sensors, transducers, data acquisition, and rounding. Apply instrument calibration records and uncertainty analysis for decisions that require traceable accuracy.
How many decimal places should I use?
Choose precision based on the uncertainty of your input measurement. For a sensor accurate to ±1 Pa, three decimal places in kPa (0.001 kPa) is reasonable. For less precise instruments, reduce displayed decimals accordingly.
Can I convert gauge pressure and absolute pressure the same way?
Yes, the unit conversion is identical. Gauge and absolute denote reference points; ensure you keep the correct reference (gauge vs absolute) when interpreting converted values.
Where should I look for standards and calibration guidance?
Consult national metrology guidance for unit definitions and uncertainty procedures, and relevant ISO standards for measurement management. For workplace safety, consult the applicable occupational safety authority and industry codes for pressure equipment.
Sources & citations
- NIST Reference on Constants, Units, and Uncertainty (units pages) — https://physics.nist.gov/cuu/Units/units.html
- ISO standards overview (quantities and units guidance) — https://www.iso.org/standard/30669.html
- IEEE Standards Association (standards and engineering best practices) — https://standards.ieee.org
- Occupational Safety and Health Administration (safety standards and guidance) — 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
Versioning & Change Control
Audit record (versions, QA runs, reviewer sign-off, and evidence).
Record ID: 21c18b716c6cWhat changed (latest)
v1.0.0 • 2025-11-26 • 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
Versioning & Change Control
Audit record (versions, QA runs, reviewer sign-off, and evidence).
What changed (latest)
v1.0.0 • 2025-11-26 • 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
UI
v1.0.0
Governance
Last updated: Nov 26, 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 • 2025-11-26 • 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: bc4833b3bc79