Reverse yarn calculator (grams to yards)

Metric (g · m · cm) Imperial (oz · yd · in)

1 Your yarn

Choose from our yarn database Enter the ball label

Yarn weight (CYC) Full ball weight (oz) Full ball length (yd)

2 Weigh your leftover

Remaining yarn weight on kitchen scale (oz)

Weigh the ball without the paper band or cardboard core. For leftovers under 10 g, a 0.1 g precision scale gives a much more accurate result.

3 Stitch you will use

Stitch you will use

Exact remaining length

65 yd (59 m)

35 % of a full ball left · 170 m per 100 g

What you can crochet right now

Granny squares 10 × 10 cm (4 × 4 in) You can make 5 squares · 13 yd per square
✅ Enough yarn
Amigurumi sphere (single crochet) Maximum diameter: 4.4 in
✅ Enough yarn
Scarf 18 cm (7 in) wide You can crochet up to 8.5 in (full scarf: 70.9 in)
⚠️ Short by 9.05 oz · Need +3 balls
Adult beanie Needs ≈ 171 yd (3.24 oz)
⚠️ Short by 2.01 oz · Need +1 ball
Round coaster ⌀ 10 cm (4 in) Needs ≈ 13 yd (0.25 oz) · enough for 4
✅ Enough yarn
Headband / ear warmer (52 × 8 cm) Needs ≈ 70 yd (1.32 oz)
⚠️ Short by 0.09 oz · Need +1 ball
Pair of adult mittens Needs ≈ 181 yd (3.44 oz)
⚠️ Short by 2.21 oz · Need +1 ball

Estimates: calibrated model of our yarn calculator with a 10 % safety margin. Sizes used: granny square 10 × 10 cm in granny stitch; sphere in single crochet (smallest useful 5 cm); scarf 18 × 180 cm; adult beanie 54 × 21 cm; coaster ⌀ 10 cm; headband 52 × 8 cm; mittens 2 × (20 × 25 cm + thumb 7 × 6 cm). Your tension can change real use by ±15 %.