Convert length, weight and temperature between metric and imperial in one place — enter a value in any unit and read every other unit in its group at once. The factors are exact international definitions, not estimates; results are rounded only for display, so this is a straight conversion tool, not a fabric-weight or costing estimate.
⚠️ Conversions are exact; only the display is rounded. The length, weight and temperature factors are fixed international definitions — 1 in = 2.54 cm, 1 yd = 0.9144 m, 1 lb = 0.453592 kg, °F = °C × 9/5 + 32 — so the numbers are not estimates. This is a straight unit converter: it does not calculate fabric GSM, garment weight or cost. For those, use the dedicated calculators linked below.
Length, weight or temperature. Type a single number in whichever unit you have, and every other unit in that group is filled in for you at once.
Length converts via metres, weight via grams, temperature via Celsius. Your input becomes the base, then reads back out to each unit — so a clean inch↔yard or gram↔ounce jump always lines up.
These are defined ratios, not averages: 1 in is exactly 2.54 cm, 1 lb is exactly 0.453592 kg. There is no error margin in the maths — only the final display is rounded to a readable length.
Grams-to-ounces restates a mass; it is not fabric weight. Use it to keep a tech pack's measurements and shipment weights aligned, then confirm construction figures with the right calculator.
No hidden constants. Every conversion uses these fixed definitions:
1 in = 2.54 cm 1 ft = 0.3048 m 1 yd = 0.9144 m 1 m = 100 cm 1 oz = 28.3495 g 1 lb = 0.453592 kg 1 kg = 1000 g °F = °C × 9/5 + 32 °C = (°F − 32) × 5/9 K = °C + 273.15 Common metric-to-imperial values, derived straight from the factors above:
| Metric | Imperial equivalent | Group |
|---|---|---|
| 1 cm | 0.3937 in | Length |
| 1 m | 1.0936 yd (3.2808 ft) | Length |
| 100 cm | 39.37 in | Length |
| 100 g | 3.5274 oz | Weight |
| 1 kg | 2.2046 lb | Weight |
| 20 °C | 68 °F | Temperature |
Costing a program rather than just converting units? Pair this with the knitwear cost calculator, translate yarn systems with the yarn count converter, and work out cloth weight with the GSM fabric weight calculator. New to sourcing? See our knitwear manufacturer overview.
Every factor is an exact, internationally defined value — 1 inch = 2.54 cm, 1 yard = 0.9144 m, 1 pound = 0.453592 kg, and °F = °C × 9/5 + 32. Nothing here is an estimate or an average, so the conversion itself carries no error margin; the only rounding happens when the result is displayed to a readable number of digits.
Three groups. Length converts between millimetre, centimetre, metre, inch, foot and yard. Weight converts between gram, kilogram, ounce and pound. Temperature converts between Celsius, Fahrenheit and Kelvin. Pick a group, type one value in any unit, and every other unit in that group updates instantly.
Tech packs and supplier specs routinely mix systems: a US or UK brand often thinks in inches, yards and pounds, while a Gaziantep knitwear factory works in centimetres, metres and kilograms. Converting cleanly keeps measurements, fabric widths and shipment weights aligned so a spec doesn't get built to the wrong number. Kiwi Giyim is a Turkey-based OEM and private-label knitwear manufacturer with a 250-pieces-per-colour minimum, and we quote in whichever system your tech pack uses.
No — this is a pure unit converter, not a fabric-weight tool. Grams-to-ounces just restates the same mass in another unit; it says nothing about GSM, which depends on fabric construction and area. If you need fabric weight, use our GSM fabric weight calculator instead, and treat this tool only for straight unit conversion.
Send your tech pack in whatever units it lives in — inches, cm, yards or metres — and we'll reply within one business day with pricing, a sample timeline and an honest feasibility read. Minimum 250 pieces per colour.