Thread length calculator
Stitch type: Saddle stitch (two needles)
Enter the seam length, leather thickness and hole spacing — we'll compute how much thread you actually use and how much to cut for one seam.
Real thread used
70.6 cm
in the finished seam
Recommended length to cut
94 cm
with allowance for backstitching and tails
51
Holes
50
Stitches
×4.7
Ratio
Usage breakdown
Surface thread (front + back)40 cm
In-hole thread (needle passes)30.6 cm
Real thread used70.6 cm
Estimate for two-needle saddle stitch. Real usage depends on tension, thread thickness and technique — always cut with a small margin (see the recommended cut length).
