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Surface Tension Converter

Convert surface tension: N/m, dyne/cm, mN/m.

5 units
6 decimals

1 N/m = 1000 dyn/cm

About the surface tension converter

Convert surface tension between N/m (SI), mN/m, dyne/cm (CGS), and pound-based units. Surface tension is the force per unit length acting at a liquid’s surface — it lets water bead on wax and supports floating insects. Water is about 72 mN/m at room temperature; mercury is around 485 mN/m.

Frequently asked questions

  • Is mN/m the same as dyne/cm?

    Yes — both equal 0.001 N/m. They are interchangeable in tables.

  • What is the surface tension of water?

    Approximately 72.8 mN/m at 20 °C.

  • What is the SI unit of surface tension?

    The newton per meter (N/m), equivalent to J/m².

More fluids converters

Flow → Flow — Mass → Flow — Molar → Mass Flux Density → Concentration — Molar → Concentration — Solution → Viscosity — Dynamic → Viscosity — Kinematic →

Complete list of surface tension units