Calculadora de Tamanho de Calça Jeans
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
W = cintura_cm / 2.54; L = entreperna_cm / 2.54
About this calculator
The Jeans Size Calculator converts waist and inseam measurements (in centimeters) to the American sizing system, expressed in inches. The result is displayed in W x L format, where W is waist width and L is inseam length. Simply enter your measurements in the fields and click calculate.
The calculation is straightforward: divide the waist measurement in centimeters by 2.54 to get inches (W). Do the same for the inseam (L). For example, an 80 cm waist gives about 31.5 inches, which can be rounded to 32. The calculator performs this rounding to the nearest whole number.
This tool is useful for buying jeans online or in stores that use inch sizing. It helps avoid size errors when comparing different brands. It also helps you understand your body measurements to choose more fitted styles like skinny, straight, or bootcut.
Care: measure the waist at the narrowest point, usually above the belly button. The inseam should be measured from the crotch to the ankle, with the leg straight. Remember that each brand may have fit variations; always check the specific brand's size chart when possible.
Frequently asked questions
How should I measure my waist for the calculator?
Measure your waist at the narrowest point, usually a few centimeters above the belly button. Use a flexible tape measure, keeping it snug but not tight.
What do the W and L numbers mean?
W stands for waist and L for length (inseam). For example, 32x34 means a 32-inch waist and 34-inch inseam.
Does the calculator consider the fit or style of the jeans?
No. The calculator only provides basic measurements. Styles like skinny, straight, or bootcut may have different cuts, so the ideal size may vary. Check the brand's size chart for more accuracy.
Is rounding always to the nearest whole number?
Yes. The calculator rounds the inch value to the nearest whole number. For example, 31.5 inches becomes 32. If the value is exactly .5, it rounds up.
Can I use measurements in inches directly?
No. The calculator only accepts centimeters. If you already have measurements in inches, multiply by 2.54 to convert to centimeters before entering.