MyFitCalcs
Complete Guide

Fitness Calculator Comparison

Not sure which calculator to use? Compare all our fitness calculators side-by-side to find the perfect tool for your goals.

Calculator Comparison Table

Compare features, accuracy, and use cases at a glance

CalculatorBest ForAccuracyTimeAction
BMI Calculator
General population screeningBasic30 secondsUse
Body Fat Calculator
Athletes, fitness trackingModerate2 minutesUse
Calorie Calculator
Weight management, meal planningGood1 minuteUse
TDEE Calculator
Precise calorie planningGood1 minuteUse
Macro Calculator
Diet planning, bodybuildingGood30 secondsUse
BMR Calculator
Understanding base metabolismGood30 secondsUse

Head-to-Head Comparisons

BMI vs Body Fat Calculator

BMI is quick but doesn't distinguish muscle from fat. Body Fat Calculator is more accurate for athletes.

Recommendation: Use BMI for quick screening, Body Fat for precise body composition.

BMR vs TDEE Calculator

BMR shows calories at rest, TDEE includes activity. TDEE is more practical for daily use.

Recommendation: Use TDEE for weight management, BMR to understand your base metabolism.

Calorie vs Macro Calculator

Calorie Calculator finds how much to eat, Macro Calculator shows what to eat (protein/carbs/fat).

Recommendation: Use Calorie Calculator first, then Macro Calculator to plan your diet.

TDEE vs Calorie Calculator

Very similar - both calculate daily energy needs. TDEE provides more detailed goal breakdowns.

Recommendation: Either works - TDEE offers more comprehensive goal planning.

Recommended Calculator Workflows

Use calculators in the right order to achieve your specific fitness goals:

Weight Loss

1
TDEE Calculator
Find maintenance calories
2
Macro Calculator
Plan protein/carbs/fat for satiety
3
Body Fat Calculator
Track progress beyond the scale

Muscle Gain

1
TDEE Calculator
Calculate surplus needed
2
Macro Calculator
Ensure adequate protein intake
3
Body Fat Calculator
Monitor lean vs fat gain

Health Monitoring

1
BMI Calculator
Quick health screening
2
Body Fat Calculator
Detailed body composition
3
TDEE Calculator
Maintain healthy weight

Detailed Calculator Guide

BMI Calculator

Quick body weight assessment

Best For
General population screening
Accuracy
Basic
Inputs: Height, Weight
Outputs: BMI score, Category
Time: 30 seconds
Limitations: Doesn't measure body composition
Use BMI Calculator

Body Fat Calculator

Measure body composition

Best For
Athletes, fitness tracking
Accuracy
Moderate
Inputs: Height, Weight, Waist, Neck, Hip
Outputs: Body fat %, Fat mass, Lean mass
Time: 2 minutes
Limitations: Requires accurate measurements
Use Body Fat Calculator

Calorie Calculator

Calculate daily calorie needs

Best For
Weight management, meal planning
Accuracy
Good
Inputs: Age, Gender, Height, Weight, Activity
Outputs: BMR, TDEE, Goal calories
Time: 1 minute
Limitations: Based on population averages
Use Calorie Calculator

TDEE Calculator

Total energy expenditure

Best For
Precise calorie planning
Accuracy
Good
Inputs: Age, Gender, Height, Weight, Activity
Outputs: BMR, TDEE, Goal breakdowns
Time: 1 minute
Limitations: Activity levels are estimates
Use TDEE Calculator

Macro Calculator

Macronutrient breakdown

Best For
Diet planning, bodybuilding
Accuracy
Good
Inputs: Daily calories, Diet type
Outputs: Protein, Carbs, Fat (in grams)
Time: 30 seconds
Limitations: Needs calorie goal first
Use Macro Calculator

BMR Calculator

Resting metabolic rate

Best For
Understanding base metabolism
Accuracy
Good
Inputs: Age, Gender, Height, Weight
Outputs: BMR (calories at rest)
Time: 30 seconds
Limitations: Doesn't include activity
Use BMR Calculator

Common Questions

Which calculator is most accurate?

Body Fat Calculator provides the most detailed assessment, but TDEE and Calorie Calculators are most accurate for energy needs. BMI is least precise but fastest for general screening.

Do I need to use multiple calculators?

For best results, yes! Start with TDEE to find your calorie needs, use Macro to plan your diet, and Body Fat to track progress. Each calculator serves a unique purpose.

What's the difference between free and paid calculators?

All our calculators are 100% free with no limitations. We use the same scientific formulas as paid alternatives. The difference is we're ad-supported and don't charge users.

Can I use these calculators if I'm an athlete?

Yes! Body Fat and TDEE calculators are particularly useful for athletes. BMI is less accurate for highly muscular individuals, so focus on body fat percentage instead.