Daily Carb Intake Calculator

June 8, 2026

This Daily Carbohydrate Intake Calculator helps you estimate how much carbohydrate you need each day based on your body weight and activity level.

Daily Carb Intake Calculator

Carbohydrate Intake Formula

Daily carbohydrates (g) = body weight (kg) × carbohydrate factor

Carbohydrate Factors

Low activity: 3–5 g per kg of body weight
Moderate activity: 5–7 g per kg of body weight
High activity / endurance training: 7–10 g per kg of body weight

How It Works

The calculator multiplies your body weight by a recommended carbohydrate factor
based on your activity level to estimate your daily carbohydrate needs.

Ethan Caldwell

Ethan builds the interactive health calculators on Height Growth Blog. Based in Denver, Colorado, he combines a software engineering background with a focus on evidence-based health tech, turning dense clinical guidelines — from CDC growth charts to NIH/IOM dietary references — into tools parents and teens can use in under a minute. Every calculator on the site, from BMI Percentile to Body Fat and Calcium Intake, is built directly from primary sources (NIH, AAP, CDC, Mayo Clinic) and cross-checked against peer-reviewed studies before launch.