Stitches per inch to stitches per centimeter
Type a value in SPI to get it in st/cm instantly.
4.724st/cm
That's 1.41× as long as fine fabric, while a standard seam is 1.18× longer.
Convert the other way: st/cm to SPI
What it means
How long is that stitch?
For straight stitch. Thread tension and fabric thickness change the stitch you actually get by a little.
The math
How to convert SPI to st/cm
mm per stitch = 25.4 ÷ SPI; SPI = 25.4 ÷ mm.
Example: 12 SPI = 4.72441 st/cm.
Every unit
That stitch in every unit
Tables
SPI to st/cm conversion table
| SPI | st/cm |
|---|---|
| 5 SPI | 1.9685 st/cm |
| 6 SPI | 2.3622 st/cm |
| 7 SPI | 2.75591 st/cm |
| 8 SPI | 3.14961 st/cm |
| 9 SPI | 3.54331 st/cm |
| 10 SPI | 3.93701 st/cm |
| 11 SPI | 4.33071 st/cm |
| 12 SPI | 4.72441 st/cm |
| 14 SPI | 5.51181 st/cm |
| 16 SPI | 6.29921 st/cm |
| 18 SPI | 7.08661 st/cm |
| 20 SPI | 7.87402 st/cm |
st/cm to SPI conversion table
| st/cm | SPI |
|---|---|
| 1.97 st/cm | 5.0038 SPI |
| 2.36 st/cm | 5.9944 SPI |
| 2.76 st/cm | 7.0104 SPI |
| 3.15 st/cm | 8.001 SPI |
| 3.54 st/cm | 8.9916 SPI |
| 3.94 st/cm | 10.0076 SPI |
| 4.33 st/cm | 10.9982 SPI |
| 4.72 st/cm | 11.9888 SPI |
| 5.51 st/cm | 13.9954 SPI |
| 6.3 st/cm | 16.002 SPI |
| 7.09 st/cm | 18.0086 SPI |
| 7.87 st/cm | 19.9898 SPI |
Quick answers
Quick answers
- How many st/cm is 1 SPI?
- 1 SPI is 0.393701 st/cm.
- How many st/cm is 10 SPI?
- 10 SPI is 3.93701 st/cm.
- How many st/cm is 12 SPI?
- 12 SPI is 4.72441 st/cm.
The units
About these units
Stitches per inch (SPI)
How many stitches fit in an inch.
Stitches per centimeter (st/cm)
How many stitches fit in a centimeter.
Keep going