Fastener Unit Converter Online (Torque / Length / Force)

Fastener Unit Converter (Torque / Length / Force)

Fastener work mixes unit systems constantly: imported drawings in inches and lb.ft, domestic documents in mm and N.m, and shop-floor habits in kgf - the same tightening torque may appear in three different units across the wrench, the drawing and the process sheet. The online converter on this page covers the three most-used groups - torque, length and force - with instant results as you type.

Conversion uses exact international values: 1 kgf = 9.80665 N, 1 lb.ft = 1.35582 N.m, 1 inch = 25.4 mm. Common inch fractions in the trade: 1/4" = 6.35 mm, 5/16" = 7.94 mm, 3/8" = 9.53 mm, 1/2" = 12.7 mm. We recommend archiving drawings and process sheets in SI units (N.m, mm, N) to keep the conversion chain error-free.

After converting, verify torque settings with our torque calculator. Full tool list at the calculator hub. Zhuhai Jiali Hardware manufactures metric and inch-size precision screws - contact us for quotes.