Costing • 25 May 2026 • 12 min read
Warp And Weft Formula Handbook: Weight, GSM And Cost Per Meter
A formula reference for fabric costing: yarn conversion, warp weight, weft weight, shortage, GSM and per-meter cost.
// Interactive Formula Lab
Warp + Weft Weight and Cost Simulator
Adjust construction and yarn inputs to see how weight and cost change instantly. This follows the same logic used in the AERA TEX calculator.
Warp Inputs
Weft Inputs
Warp Weight / m
66.000 g
Weft Weight / m
55.440 g
Warp Cost / m
₹15.58
Weft Cost / m
₹12.86
Formula Snapshot
tex(warp) = 100.00 / 9 = 11.1111
warp weight (g/m) = ends × tex / 1000 = 5400 × 11.1111 / 1000 = 60.0000 (before shortage)
weft length (m/m fabric) = ppi × 39.37 × width(m) = 72.00 × 39.37 × 1.6002 = 4,536.0000
total yarn cost / m = warp cost + weft cost = ₹15.58 + ₹12.86 = ₹28.44
Convert Yarn To Tex
Use tex as the common base. Tex is grams per 1000 meters, which makes it practical for weight calculations.
The core conversions are tex = denier / 9 and tex = 590.5 / Ne.
- Denier to tex: denier / 9
- Ne to tex: 590.5 / Ne
- Tex to Ne: 590.5 / tex
Warp Weight
If total ends are known, warp weight per meter before shortage is total ends multiplied by warp tex, divided by 1000.
Then apply warp shortage. Keep the shortage visible so the assumption can be checked.
Weft Weight And GSM
Weft length per meter depends on PPI and width. Calculate picks per meter, multiply by width in meters, then multiply by weft tex.
GSM should be reviewed as an approximate fabric weight result, both before and after shortage, so buyers understand practical weight range.
// Buyer FAQ
Common Questions
Can GSM be calculated from yarn formulas?
Yes, approximately. Warp and weft weight can be converted into GSM using fabric width, but finishing can still affect final weight.
Why use tex in formulas?
Tex gives one common weight base for denier and count yarns, reducing unit mistakes.
// Next Buying Step
Turn This Into A Fabric Inquiry
Use the guide above to shortlist fabric type, width, GSM, finish stage, quantity, country, and sample requirement before contacting AERA TEX.