Dynamic ↔ Kinematic Viscosity Converter
Convert between dynamic (cP, Pa·s) and kinematic (cSt, m²/s) viscosity through fluid density.
Pump curves and ISO VG grades use kinematic viscosity; CFD and shear-stress formulas use dynamic. Density links the two.
Formula
Dynamic ↔ Kinematic Viscosity Converter is a free viscosity converter for process, mechanical and water engineers — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Dynamic ↔ Kinematic Viscosity Converter
Convert between dynamic (cP, Pa·s) and kinematic (cSt, m²/s) viscosity through fluid density. The calculation implements ν = μ / ρ (1 cSt = 10⁻⁶ m²/s, 1 cP = 10⁻³ Pa·s) (ISO 3104 — Petroleum products, kinematic viscosity). Pump curves and ISO VG grades use kinematic viscosity; CFD and shear-stress formulas use dynamic. Density links the two.
How to use Dynamic ↔ Kinematic Viscosity Converter
- 1Enter Dynamic viscosity μ in mPa·s (cP) (SAE 30 oil at 40 °C ≈ 290 cP).
- 2Enter Density ρ in kg/m³.
- 3Read Kinematic viscosity ν, ν, μ instantly — no submit button needed.
- 4Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Dynamic ↔ Kinematic Viscosity Converter?
- ✓Implements the standard formula — ν = μ / ρ (1 cSt = 10⁻⁶ m²/s, 1 cP = 10⁻³ Pa·s)
- ✓Reference cited on-page: ISO 3104 — Petroleum products, kinematic viscosity
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Dynamic ↔ Kinematic Viscosity Converter use?+
It computes ν = μ / ρ (1 cSt = 10⁻⁶ m²/s, 1 cP = 10⁻³ Pa·s), per ISO 3104 — Petroleum products, kinematic viscosity. The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
Pump curves and ISO VG grades use kinematic viscosity; CFD and shear-stress formulas use dynamic. Density links the two.
Does this work for any fluid?+
Yes — density and viscosity are inputs (with common fluids suggested in the field hints), so the same physics applies to water, oils, gases and process fluids. Compute always runs in SI internally, so unit mix-ups can't corrupt the result.
Is the Dynamic ↔ Kinematic Viscosity Converter free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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