Knit It Once workspace
Plan it. Chart it. Make it.
Free knitting and crochet calculators for the numbers, editable Pixel Charts for the colourwork, and projects that keep the whole make together.
Free account includes a Pixel Chart trial. Calculators never need one.

- Six free calculators
- No account to calculate
- Every result shows the formula
- Private by default — stored on your device
Sec 02Free tools
Calculate with confidence
Six calculators, no account, and every result shows its formula and rounding.
Start a calculation
Every result includes the formula and its rounding.
Plan the numbers
- What does my swatch measure?Gauge calculator22 sts over 4 in = 5.5 sts/in
- My gauge does not match the patternPattern resizePattern says 100 sts. At your gauge: 110.
- Do I have enough yarn?Yarn estimatorAbout 1,240 yd. That's 6 skeins.
- How many stitches and rows?Blanket sizeQueen, 90 × 100 in = CO 495 sts
- How many squares do I need?Granny squares9 × 12 = 108 squares
Sec 03Pixel Charts
From picture to a chart you can make from
Upload an image, pixelate it, edit the grid, and keep your place with work mode. Conversion happens in your browser — the picture never leaves your device.
- 01Upload a picture
- 02Pixelate and edit the grid
- 03Work from the chart

Sec 04How it works
One workspace, cast-on to cast-off
01
Calculate
Gauge, resize, and yarn math with the formula shown.
02
Save your project
Keep the numbers, yarn, and notes together.
03
Create a Pixel Chart
Turn an image into an editable chart grid.
04
Make from the chart
Work mode tracks your row as you go.
Sec 05Your workspace
Pick up exactly where you left off
Projects keep gauge, yarn, calculations, charts, and row progress together on this device — no account, nothing uploaded.
Keep your whole make together
A free account syncs projects to the cloud and unlocks the Pixel Chart workspace. The row counter and projects work without one.
Pricing
Free value, project value, Pixel value.
Calculators stay free without an account. Premium adds bigger charts and production exports when billing opens.
