As we know One g·mm² is equal to 0.01 g·cm² (1 g·mm² = 0.01 g·cm²).

To convert Gram Square Millimeter to Gram Square Centimeter, multiply your g·mm² figure by 0.01.

Example : convert 25 g·mm² to g·cm²:

25 g·mm² = 25 × 0.01 g·cm² = g·cm²

To convert Gram Square Centimeter to Gram Square Millimeter, divide your g·cm² figure by 0.01.

Example : convert 25 g·cm² to g·mm²:

25 g·cm² = 25 ÷ 0.01 g·mm² = g·mm²