Yarn Remaining Calculator
Weigh your leftover yarn and find out how much length is left before you run out.
About 88 yd/m left
This is an estimate based on weight, not an exact measurement — yarn can wind unevenly onto a skein, so weigh your leftover yarn on a kitchen scale for the best result.
How to use
- Weigh your leftover yarn on a kitchen scale (grams work best) and enter that figure as the leftover yarn weight.
- Enter the full skein weight and full skein length from the yarn label — for example a label reading "100g / 220yd" gives you both numbers.
- Read the result: an estimate of how many yards (or metres, matching whatever unit you entered for skein length) remain in your leftover yarn.
- Compare that estimate against how much length your pattern still needs before deciding whether to buy another skein.
Good to know
- This is a weight-based estimate, not a direct length measurement — yarn wound unevenly, felted, or with a fuzzy halo can weigh slightly differently than a smooth strand of the same length, so treat the result as an approximation.
- A kitchen or postage scale accurate to 1g is enough for this calculation; you do not need a precision lab scale.
- The skein length can be entered in yards or metres — whichever unit is printed on your yarn label — and the result comes back in that same unit, since this tool only uses the ratio between weight and length, not a unit conversion.
FAQ
- How do I estimate leftover yarn length without unwinding the whole ball?
- Weigh the leftover yarn on a kitchen scale, then use the full skein's weight and length (printed on the label) to scale down proportionally — this calculator does that ratio for you instantly.
- Where do I find the full skein weight and length?
- Both numbers are printed on the yarn label, usually together as something like "100g / 220yd (201m)." Use the same skein your leftover yarn came from, since weight-to-length ratio varies between yarn weights and fibres.
- Why is the result only an estimate and not exact?
- The calculation assumes yarn thickness is perfectly uniform along its length, which is close to true for machine-spun yarn but can vary slightly with hand-dyed, textured, or novelty yarns.
- What if my leftover yarn weighs more than the full skein?
- That usually means you have leftovers from more than one skein combined, or weighed the yarn with its ball band still attached — double-check on the scale, though the calculator will still compute a proportional estimate either way.