Crochet Row and Round Calculator
In crochet the stitch itself sets the height. At 16 stitches per 10 cm one stitch is 0.625 cm wide, and a double crochet stands about twice that, so a row is 1.25 cm and 60 cm takes 48 rows. Switch the same yarn to single crochet (ratio 1.1) and a row drops to 0.69 cm — 87 rows, close to double the time and yarn.
Your numbers
Rounds
48rnds
Rows per 10 cm
8rows/10 cm
Row height
1.25cm
Formula
Row height = 10 ÷ Stitches per 10 cm × Stitch height in stitch widths, Rounds = Finished length ÷ Row height
The ratios are approximate: single crochet 1.0–1.2, half double 1.4–1.6, double 1.9–2.1, treble 2.6–3.0, drifting with your tension. For a garment that has to fit, work ten rows, measure the height and divide by ten. Textured patterns — V-stitches, motifs, bobbles — do not follow the ratio at all, so measure one full repeat instead.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| Stitches per 10 cm (sts/10 cm)Stitches in 10 cm. If you measured over 5 cm, double it before entering. | 16 | 1 and up |
| Stitch height in stitch widths (×)Stitch height as a multiple of its width — about 1.1 for single, 2 for double crochet. | 2 | 0.5 ~ 3 |
| Finished length (cm)The length when finished. | 60 | 1 and up |
Step by step
Quick reference table
Results when only Stitches per 10 cm (sts/10 cm) changes and everything else stays put.
| Stitches per 10 cm (sts/10 cm) | Rounds (rnds) | Rows per 10 cm (rows/10 cm) | Row height (cm) |
|---|---|---|---|
| 8 | 24 | 4 | 2.5 |
| 12 | 36 | 6 | 1.67 |
| 16 | 48 | 8 | 1.25 |
| 24 | 72 | 12 | 0.83 |
| 32 | 96 | 16 | 0.63 |
What each result means
| Result | At default values |
|---|---|
| Rounds (rnds)Rounds worked outwards from the centre, as opposed to rows worked back and forth. | 48 |
| Rows per 10 cm (rows/10 cm)Rows in 10 cm. This sets length, not width. | 8 |
| Row height (cm)How much height one row adds, which the stitch type decides. | 1.25 |
Common mistakes
The ratios are approximate: single crochet 1.0–1.2, half double 1.4–1.6, double 1.9–2.1, treble 2.6–3.0, drifting with your tension. For a garment that has to fit, work ten rows, measure the height and divide by ten. Textured patterns — V-stitches, motifs, bobbles — do not follow the ratio at all, so measure one full repeat instead.
Glossary
- Stitches per 10 cm
- Stitches in 10 cm. If you measured over 5 cm, double it before entering.
- Stitch height in stitch widths
- Stitch height as a multiple of its width — about 1.1 for single, 2 for double crochet.
- Finished length
- The length when finished.
- Rounds
- Rounds worked outwards from the centre, as opposed to rows worked back and forth.
- Rows per 10 cm
- Rows in 10 cm. This sets length, not width.
- Row height
- How much height one row adds, which the stitch type decides.
Frequently asked questions
Q. How is Crochet Row and Round Calculator calculated?
Row height = 10 ÷ Stitches per 10 cm × Stitch height in stitch widths, Rounds = Finished length ÷ Row height — In crochet the stitch itself sets the height. At 16 stitches per 10 cm one stitch is 0.625 cm wide, and a double crochet stands about twice that, so a row is 1.25 cm and 60 cm takes 48 rows. Switch the same yarn to single crochet (ratio 1.1) and a row drops to 0.69 cm — 87 rows, close to double the time and yarn.
Q. Can you walk through an example?
With Stitches per 10 cm 16sts/10 cm, Stitch height in stitch widths 2×, Finished length 60cm, the answer is Rounds 48rnds.
Q. What do I need to enter?
Enter Stitches per 10 cm, Stitch height in stitch widths, Finished length. The result recalculates as you type, and an empty box counts as zero.
Q. How much does the answer move if I change a number?
Changing only Stitches per 10 cm (sts/10 cm) moves the answer to Stitches per 10 cm (sts/10 cm) 8 → Rounds (rnds) 24 and Stitches per 10 cm (sts/10 cm) 32 → Rounds (rnds) 96. The table below lays out five steps.
Q. How are the numbers rounded?
Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.
Q. Anything to watch out for?
The ratios are approximate: single crochet 1.0–1.2, half double 1.4–1.6, double 1.9–2.1, treble 2.6–3.0, drifting with your tension. For a garment that has to fit, work ten rows, measure the height and divide by ten. Textured patterns — V-stitches, motifs, bobbles — do not follow the ratio at all, so measure one full repeat instead.
Related calculators
Materials differ in density and absorption. If your label states a figure, use it — the defaults here are only common values.