Sewing Thread Consumption Calculator

Calculate thread consumption based on stitch type, seam dimensions, and material thickness.

- inch/inch
- meter
-
Variables
  • C = Consumption per inch
  • W = Width of seam (input in mm, converted to inch)
  • T = Thickness of materials (input in mm, converted to inch)
  • S = Stitch per inch
  • N = Seam Length (inch or cm)
  • (*) = 2W+N assumes for cover thread
Thread Consumption Equations
Stitch Type Stitch Name Equation
101Single-thread Chain StitchC = 3 + 2TS
301Lock StitchC = 2 + 2TS
401Two-thread Chain StitchC = 4 + 2TS
406Cover-seaming StitchC = 7 + 2S(T+W)
407Cover-seaming Stitch for Attaching ElasticC = 9 + 2S(3T+W)
5043 Thread Over lockC = 4S(W+T) + 5
5144 Thread Mock SafetyC = 5 + 2S(3T+2W)
5165 Thread Safety StitchC = 2S(2W+3T) + 9
*602Cover StitchC = 8 + S(5W+4T)
*605Cover StitchC = 10 + 2S(2W+3T)
*607Flat Seaming StitchC = 12 + 4S(W+2T)

* 2W+N assumes for cover thread