If you need general sock size, us sock size and us shoe size (4-15.5) and you already have child’s age, woman or man?, uk/au shoe size (3-14.5) and eu (15-32.5), this calculator does the substitution for you. It suits a quick check, a homework answer you want to confirm, or any figure you need to sanity test.
What Is the Sock Size Calculator?
The sock size calculator turns child's age, woman or man?, uk/au shoe size (3-14.5) and eu (15-32.5) into general sock size, us sock size and us shoe size (4-15.5).
It is a quick way to get from the numbers you have to the number you need, without setting up a spreadsheet or reaching for a formula.
How the Sock Size Works
Each result follows from the ones before it, and the calculator shows every step, so a surprising answer can be traced back to the input that caused it.
Round your inputs to the precision you actually know, and keep more precision than that in the intermediate steps.
Getting a Result You Can Trust
Run the calculation twice with slightly different inputs. A sensible calculator moves its output in proportion; a wild change points to a unit or a decimal point problem in what you entered.
Write the inputs down next to the answer. It takes a moment and it is the difference between a number you can explain and one you cannot.
A Worked Example
Working through an example, with child's age set to 10, woman or man? set to 1, uk/au shoe size (3-14.5) set to 5, the calculator returns us sock size of 8, and eu shoe size (35-52) of 37.56, and us shoe size (4-15.5) of 6. Substitute your own figures and the same steps produce the same kind of answer.
Frequently Asked Questions
What do I need to work out general sock size?
Enter child's age, woman or man?, uk/au shoe size (3-14.5) and eu (15-32.5). The calculator then works through the relationship and reports general sock size, us sock size and us shoe size (4-15.5).
What does the sock size actually calculate?
It takes child's age, woman or man?, uk/au shoe size (3-14.5) and eu (15-32.5) and converts them into general sock size, us sock size and us shoe size (4-15.5) using the standard relationship for this problem. Each step is applied in turn, so every output is traceable back to the numbers you typed in.
How should I enter child's age?
Use the value you actually have, in the unit shown next to the field. Enter every value in the same unit system. The calculator assumes the figures you supply are consistent, so it cannot correct a mistake that happens before the calculation starts.
Can I use this for a quick estimate as well as a precise answer?
Yes. The calculator is built for quick checks, so round your inputs to a sensible number of significant figures and the result will be just as useful. If you need more precision, keep the same method and add digits to the inputs rather than adjusting the method itself.
Do I have to fill in every field?
Only the fields a particular result depends on. If you leave one blank, the results that need it simply show a note instead of a number, and everything else still works.