Neck Circumference to Shirt Collar Size Calculator
Convert neck measurement to collar size in inches and centimetres.
Compare Your Options And Get Clear Answers
Convert neck measurement to collar size in inches and centimetres.
Neck Circumference to Shirt Collar Size Estimator
Enter your numbers below for an instant estimate.
How It Works
Key concepts behind this calculator
Enter Values
Fill in each field with your own numbers.
Calculate
Results update as you change the inputs.
Review
Read the breakdown and the explanation.
Adjust
Change values to compare scenarios.
Neck Quick Guide
Typical values for reference.
| Neck circumference (cm) | Ease (cm) | Spare | Collar size |
|---|---|---|---|
| 39 | 1.5 | 1 | 15.9 in |
| 36 | 1.5 | 1 | 14.8 in |
| 42 | 1.5 | 1 | 17.1 in |
| 45 | 2 | 1 | 18.5 in |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Neck Circumference to Calculator FAQ
Answers to common questions about this calculator.
It uses the formula shown with your inputs. Real conditions vary, so treat it as a guide.
Round to the nearest half inch.
It is an estimate based on the inputs you enter. Check real quotes, labels or official guidance for important decisions.
Yes. Replace each input with your own figures and the result updates instantly.