Convert Kilograms-force per Square Centimetre to N/mm²

Formula

N/mm² = kgf/cm² × 0.0980665

or N/mm² = kgf/cm² ÷ 10.19716212978

Derivation from SI units:

• 1 kgf/cm² = 9.80665 N ÷ 10⁻⁴ m² = 98 066.5 Pa (exact), also called the technical atmosphere (at)
• 1 N/mm² = 1 N ÷ 10⁻⁶ m² = 10⁶ Pa = 1 MPa
• 1 kgf/cm² = 98066.5 Pa ÷ 1000000 Pa per N/mm² = 0.0980665 N/mm²

Both units are defined exactly, so the factor is exact. Kilogram-force per Square Centimetre definition: kilogram-force per square centimetre; Newton per Square Millimetre definition: newton per square millimetre.

Worked examples

1. A reading of 7 kgf/cm² converts to 0.6864655 N/mm².
   7 kgf/cm² × 0.0980665 = 0.6864655 N/mm²
2. A value of 100 kgf/cm² is 9.80665 N/mm².
   100 kgf/cm² × 0.0980665 = 9.80665 N/mm²

Where it's used

Kilograms-force per Square Centimetre are used for pressure gauges in India, Japan and Latin America, while newtons per square millimetre appear in steel yield and tensile strength (S355: 355 N/mm²). Both measure pressure, stress and differential pressure (force per unit area), so the conversion is a fixed factor.

Kilogram-force per Square Centimetre to other pressure units

Frequently asked questions

Sources

• Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "kilogram-force per square centimeter".
• The International System of Units (SI), 9th edition (SI Brochure), Bureau International des Poids et Mesures , Table 4, coherent derived units with special names.

Last reviewed: 2026-10-15. Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.