Sewing calculator
Bias Binding Calculator: Strip Length, Width, and Yardage
Estimate bias or straight-grain strip length, cut width, joins, and the fabric needed for continuous binding.
Your measurements
Binding result
- Cut strip width
- 4.00 in
- Strip count
- 3
- Fabric to buy
- 0.375 yd
Formula
Fold type sets cut-strip width; strip joins or estimated continuous-bias area determine material.
Assumptions
- Join allowance is lost from usable strip length.
- Continuous-bias area and equal-area square side are planning estimates, not cutting templates.
When a tested commercial pattern gives different cutting dimensions or layout instructions, follow that pattern.
Worked example
- 2,000 mm finished length
- 10 mm finished double-fold binding
- 300 mm usable fabric width
The 40 mm cut strip needs an estimated 80,000 mm² of area. Its equal-area square side is 282.843 mm, which fits within 300 mm of usable width.
Verification note
Do not order 282.843 mm as if it were a complete cutting plan. Test the seam offset and cutting path with a paper model before cutting the full binding supply.
Learn and verify
Questions from search
How wide do I cut bias binding strips?
For double-fold binding, cut strips about four times the finished width. For single-fold, cut about twice the finished width, then add any joining loss.
How much fabric does continuous bias binding need?
Enter the finished length, finished width, and fabric width. The calculator estimates strip count, join loss, and the square or yardage for a continuous-bias cut.