Crochet Gauge Calculator
Turn your measured swatch into stitches and rows for a target size, or calculate the finished size of a chart. Use centimeters or inches and reuse a saved swatch.
What would you like to calculate?
Suggested starting sizes. Adjust to suit the person and how the blanket will be used.
Target measurements
Pattern repeat & edge stitches
Your measured swatch
Measure the fabric you made with your yarn, hook and stitch. Choose the area you actually measured, then count the stitches and rows.
Save for next time · optional yarn use
The yarn amount must cover this many stitches. If you weighed the full swatch but measured gauge only in the middle, use the full stitch count here. Weight and length cannot be interchanged.
A crochet stitch calculator based on your own swatch
Crochet gauge describes how many stitches and rows fit a measured area of your fabric. This calculator works in both directions: find the size of an existing stitch grid, or find the stitches and rows needed for a target width and height.
Use the same yarn, hook and stitch as your project. Standard 10 cm and 4 in measurement choices need only stitch and row counts; Custom area lets you enter a different measured width and height. Reuse a saved swatch instead of typing it again.
How to calculate crochet gauge and stitch counts
- Choose Stitches → finished size or Finished size → stitches, then select centimeters or inches.
- Apply a saved swatch, or count stitches and rows in the selected measured area. For another area, choose Custom and enter its actual dimensions.
- Enter the chart counts or target measurements. Set a repeat multiple and extra edge stitches if needed, review the rounded result and create a chart when it fits the editor limits.
Gauge calculations you can check
- Finished width = chart stitches × measured swatch width ÷ swatch stitches; height uses rows and measured swatch height.
- Target stitch counts are rounded to whole repeats plus your chosen extra edge stitches; the actual resulting size remains visible.
- Centimeter and inch measurements, saved swatches and custom measurement areas.
- No invented finished size before a valid swatch is supplied; calculated grids over 300 × 300 cannot be opened as editor charts.
Crochet gauge calculator questions
What measurements does the crochet gauge calculator need?
Count stitches across and rows high within one measured area. Select 10 × 10 cm or 4 × 4 in if that is the area you measured. Otherwise choose Custom area and enter the actual width and height. Counts and dimensions must describe the same part of the swatch.
How many crochet stitches do I need for a width?
Multiply your target width by the number of stitches in your measured swatch, then divide by the swatch width in the same unit. For example, 20 stitches in 10 cm gives 80 stitches for 40 cm before repeat adjustments. Row counts use the same calculation with measured height.
Are a 10 cm swatch and a 4 inch swatch the same?
No. Four inches is 10.16 cm. Choose the measurement area you actually used; do not relabel a 10 cm count as a 4 inch count. The unit controls preserve the meaning of the measurements rather than treating those areas as identical.
Does this crochet stitch calculator include pattern repeats?
You can set a repeat multiple and extra edge stitches when converting a target size to counts. The calculator rounds to a compatible whole count and shows the resulting dimensions. Starting chains and turning chains still come from the instructions for your actual stitch pattern.
Should I measure my swatch before or after blocking?
Measure the fabric in the condition you expect for the finished project. If you will wash and block the item, treat the swatch the same way and measure again without stretching. Save a note about the yarn, hook and treatment so you can choose the right swatch later.
Does entering gauge resize my existing crochet chart?
Adding a swatch estimates physical dimensions and stitch proportions; it does not automatically change the stitch grid. A calculated new chart is a separate creation step. Review any deliberate resize or resampling because it can change small details in a motif.