Convert Grams-force per centimetre to Millinewtons per metre
Convert Grams-force per centimetre (gf/cm) to Millinewtons per metre (mN/m) instantly and accurately.
Conversion Formula
mN/m = gf/cm × 980.665
About Grams-force per centimetre
The gram-force per centimetre (gf/cm) equals g_n × 10⁻³ / 10⁻² = 0.980665 N/m - a gravitational metric unit that appeared in early tensiometry where ring and plate instruments were calibrated in grams. 1 gf/cm ≈ 0.9807 N/m ≈ 980.7 mN/m, close to but slightly less than 1 N/m. Rarely used after SI adoption. 1 gf/cm = 0.980665 N/m.
About Millinewtons per metre
The millinewton per metre (mN/m) equals 10⁻³ N/m, the most widely used practical unit for liquid surface tension worldwide. Water at 20 °C: 72.8 mN/m; ethanol: 22.1 mN/m; mercury: 485 mN/m; olive oil: ~32 mN/m. Numerically identical to dyn/cm, erg/cm² and mJ/m². 1 mN/m = 10⁻³ N/m.
Quick Reference Table
| Grams-force per centimetre (gf/cm) | Millinewtons per metre (mN/m) |
|---|---|
| 1 gf/cm | 980.665 mN/m |
| 2 gf/cm | 1961.33 mN/m |
| 5 gf/cm | 4903.32 mN/m |
| 10 gf/cm | 9806.65 mN/m |
| 25 gf/cm | 24516.6 mN/m |
| 50 gf/cm | 49033.3 mN/m |
| 100 gf/cm | 98066.5 mN/m |