USING YARNPRO’S 3 CALCULATORS
Note: When you tap in the spaces provided in these three calculators in the mobile app, the keyboard appears at the bottom. If you tap the screen once more, the keyboard disappears. You can also use your finger or a stylus to move the screens up or down.
YARN SUBSTITUTION CALCULATOR
The Yarn The Pattern Calls For
- Insert the weight of the skein, hank, ball or cone called for in the pattern, then select grams or ounces
- Insert the length of the yarn contained in each skein, hank, ball or cone called for in the pattern, then select meters or yards
- Insert the number of hanks, balls, skeins or cones the pattern calls for. (You can also leave it blank.)
The Yarn You Want to Substitute
Repeat steps 1 and 2 above.
Press the Calculate button. The next screen provides recommendations about: How the substitution yarn compares with the first yarn; whether the substitution yarn should be used; if it can be used, how many hanks, balls, skeins or cones of the new yarn would be needed; and suggestions for a gauge swatch.
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GAUGE SWATCH CALCULATOR – INCHES
- Insert the number of stitches over 4 inches called for in the pattern’s recommended gauge. When you tap in the fraction area (which defaults to 0), you will be able to select 0, 1/4, 1/2 or 3/4.
- Insert the number of rows over 4 inches, as recommended by the pattern. When you tap in the fraction area (which defaults to 0), you will be able to select 0, 1/4, 1/2 or 3/4.
- Insert the pattern’s finished measurement. When you tap in the fraction area (which defaults to 0), you will be able to select 0, 1/4, 1/2 or 3/4. (Generally, you want to use a key measurement, such as bust, chest or hip.)
Your Gauge
- Insert your stitch gauge measured over 4 inches. When you tap in the fraction area (which defaults to 0), you will be able to select 0, 1/4, 1/2 or 3/4.
- Insert your row gauge measured over 4 inches. When you tap in the fraction area (which defaults to 0), you will be able to select 0, 1/4, 1/2 or 3/4.
Press the Calculate button. The next screen provides recommendations about: Your stitch gauge, the finished measurement based on your gauge (compared to the pattern’s finished measurement), recommendations for adult sizing, and your row gauge.
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GAUGE SWATCH CALCULATOR – METRIC
Original Pattern Gauge
- Insert the number of stitches over 10 centimeters called for in the pattern’s recommended gauge. Use a decimal point when you need a fraction (such as 8.5).
- Insert the number of rows over 10 centimeters, as recommended by the pattern. Use a decimal point when you need a fraction (such as 8.5).
- Insert the pattern’s finished measurement. Use a decimal point when you need a fraction (such as 8.5). (Generally, you want to use a key measurement, such as bust, chest or hip.)
Your Gauge
- Insert your stitch gauge measured over 10 centimeters. Use a decimal point when you need a fraction (such as 8.5).
- Insert your row gauge measured over 10 centimeters. Use a decimal point when you need a fraction (such as 8.5).
Press the Calculate button. The next screen provides recommendations about: Your stitch gauge; the finished measurement based on your gauge (compared to the pattern’s finished measurement); recommendations for adult sizing; and your row gauge.
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I hope you find YarnPro as useful as I do. Please feel free to contact me at sweatyknitter@gmail.com with any comments, questions or concerns.









This looks great! I’m following your blog (more like stalking) so I’ll know when the android version comes out…then it will be off to market for me!
I will post another entry once the Android version is out.
I’ll be watching for it…er…lurking…stalking…it looks like an amazing app, something to tap into at Michael’s!
Please let us Droid users know when the Droid version is available. This would replace 3 apps that I presently have on my phone and would do so quite elegantly.
This looks really useful – I buy my wool often a charity shops and then just fiddle to get something right!
I hope you find it useful. (I use my app regularly!)