Metric Conversion

Metric Conversion

Slide ruleThis page contains information useful to perform units conversion between English (Imperial) and Metric (SI) units.

Metric Conversion Table:

UNIT ENGLISH METRIC
Length 1 inch 25.4 mm 0.0254 m
1 foot 304.8 mm 0.3048 m
1 yard 914.4 mm 0.9144 m
Area 1 in2 645.2 mm2 6.452E-4 m2
1 ft2 92900 mm2 0.09290 m2
1 yd2 836100 mm2 0.8361 m2
Volume 1 in3 16390 mm3 1.639E-5 m3
1 ft3 28320000 mm3 0.02832 m3
1 yd3 764600000 mm3 0.7646 m3
Moment of Inertia 1 in4 416200 mm4 4.162E-7 m4
1 ft4 8631000000 mm4 0.008631 m4
Weight/Force 1 lb 0.4536 kg 4.448 N
1 kip 453.6 kg 4.448 kN
1 lb/in 0.01786 kg/mm 175.1 N/m
1 lb/ft 0.001488 kg/mm 14.59 N/m
Pressure 1 lb/in2 7.031 E-4 kg/mm2 6895 Pa
1 lb/ft2 4.883E-6 kg/mm2 47.88 Pa
Density 1 lb/in3 2.768E-5 kg/mm3 271400 N/m3
1 lb/ft3 1.602E-8 kg/mm3 157.1 N/m3
1 lb/yd3 5.933E-10 kg/mm3 5.818 N/m3
Moment 1 in-lb 11.52 kg-mm 0.1130 N-m
1 ft-lb 138.3 kg-mm 1.356 N-m
1 ft-kip 138300 kg-mm 1356 N-m
Gravity 32.2 ft/s2 9.807 m/s2

Other resources:

  1. "Guide for the Use of the International System of Units (SI), Appendix B - Conversion Factors", NIST Special Publication 811
  2. Metric Conversion Utility (Windows Program)