Textile Calculators

From yarn to cutting: which calculation, when

In a bulk order the same measurements are worked out again at each stage of production. The five textile calculators follow that order:

1. Buying yarn. When a supplier quotes a count in a system you do not use, the yarn count converter shows Ne, Nm, tex, dtex, denier, NeK and NeL at once. A Ne 30/1 cotton yarn is 19.68 tex and Nm 50.8.
2. Checking incoming fabric. The fabric GSM calculator checks the weight of a delivered fabric from a sample: a 3 g sample cut with a 100 cm² circular cutter is 300 g/m², or 8.85 oz/yd².
3. Buying and stock. When fabric is bought by the kilogram and planned in meters, the meter to kg calculator converts between the two with the width and GSM. A fabric 180 cm wide at 240 g/m² gives about 2.31 m per kilogram.
4. Planning the order. The fabric consumption calculator turns pieces, consumption per piece, waste and a test allowance into an order quantity. 1,000 pieces at 1.2 m each, 10 extra pieces, 5% waste and a 3 m test allowance mean an order of 1,276 m.
5. Cutting. After a wash test, the fabric shrinkage calculator gives the shrinkage percentage and the cutting size. With 5% shrinkage, a part that must finish at 100 cm is cut at 105.26 cm; adding 5% to the target gives 105 cm and leaves the part short.

Units and constants

The calculators use the exact defined values of the yard, the pound and the ounce (NIST Handbook 44, Appendix C). Every other constant is derived from them, never rounded by hand:

• 1 yard = 0.9144 m; 1 inch = 2.54 cm
• 1 pound = 453.59237 g; 1 ounce = 1 pound ÷ 16 = 28.349523125 g
• Cotton count: tex = 590.54 ÷ Ne (from the 840-yard hank)
• Fabric weight: 1 oz/yd² ≈ 33.906 g/m²

Results are rounded for display only; the calculation keeps full precision. If you calculate by hand with a rounded factor (590.5 or 33.91), the last digit may differ slightly.

Reading the results

• Exact formula, your inputs. The calculators only do calculations whose result is exact by definition. GSM can vary from roll to roll, the consumption per piece comes from the marker plan, and shrinkage depends on the wash test method. These inputs decide the result.
• Read it as a range. Enter a GSM tolerance in the meter to kg calculator and the result comes out as a range. A ±5% tolerance on 240 g/m² means 228–252 g/m².
• Mind the decimal separator. On the English pages, use a period for decimals (1.5). A comma followed by exactly three digits is read as a thousands separator: "1,500" is 1500. The calculation steps show how your number was read.
• Share or print. When you change a value, the link in the address bar carries the calculation. The Copy, Share and Print buttons pass the result to your supplier or team.

Checked against published examples

Each calculator's result is compared in automated tests with worked examples published in its sources. A few of them:

• GSM: a 100 cm² sample weighing 3 g is 300 g/m² (TekstilBilgi).
• Kilograms to meters: 50 kg of knitted fabric at 250 g/m² and 46 in open width is 171.17 m (Online Clothing Study).
• Meters per kilogram: 180 cm width at 240 g/m² gives 2.3148 m/kg (Erkan Tekstil).
• Yarn count factor: Cotton Incorporated TRI 1014 rounds the Ne to tex factor to 590.5; the calculator uses the exact value (590.54…).

If you are sourcing, browse fabric manufacturers in Turkey in the directory or describe what you need and request quotes.