Measure twice, make once
Held-together yarn planner
Plan label-based quantities for one or two yarns held together. Enter the working length needed by each strand, not an already combined total.
Start with the calculator. Formula, assumptions, and limits are available when you need them.
Before you use this tool
Enter the working length needed by one strand, not the combined length of every strand. Select how many strands of A and B run throughout.
Each strand consumes the full working length; B can be zero. This estimates separate packages, not the combined yarn weight category or gauge.
Method and limits
Formula and assumptions
Each working strand needs the entered length plus allowance. For each yarn, multiply that length by its strand count, divide by label length, and round up to whole balls. Total purchased mass is the sum of each ball count × label mass. It assumes all strands run together throughout; estimate separate sections separately.
Worked example
Example: 400 m per strand with 10% extra needs 440 m of A and 440 m of B. At 100 m / 50 g for A and 200 m / 25 g for B, plan 5 balls of A and 3 of B: 325 g purchased.
Limits and rounding
Results are planning estimates from the values entered. Displayed decimals are rounded for craft use; whole materials and repeats round up where the method says so. Confirm gauge, material behavior, construction, and finished measurements before committing supplies.