Health & Fitness Calculators

BMI, calories, fitness tracking, body estimates, pace, steps, and wellness tools.

Calculators in this category

20 calculators available in this section.

Popular calculator clusters

Jump straight to common tasks in this category.

BMI Calories Body estimates Running pace Sleep

BCBMI CalculatorCalculate body mass index from weight and height.BCBMR CalculatorEstimate basal metabolic rate using the Mifflin-St Jeor equation.CCCalorie CalculatorEstimate daily calories from BMR and activity level.MCMacro CalculatorSplit daily calories into protein, carbs, and fat targets.IWCIdeal Weight CalculatorEstimate ideal body weight using a simple height-based formula.BFCBody Fat CalculatorEstimate body fat percentage using circumference inputs.WICWater Intake CalculatorEstimate daily water intake from body weight and activity.PDDPregnancy Due Date CalculatorEstimate pregnancy due date from the first day of the last menstrual period.DDBDue Date by Last Period CalculatorEstimate due date using last period date and cycle length.HRZHeart Rate Zone CalculatorEstimate training heart rate zones from age and resting heart rate.RPCRunning Pace CalculatorCalculate running pace from distance and time.WPCWalking Pace CalculatorCalculate walking pace from distance and time.CBCCalories Burned CalculatorEstimate calories burned from MET, weight, and duration.STMSteps to Miles CalculatorConvert steps to miles using step length.MTSMiles to Steps CalculatorEstimate steps from miles and step length.PICProtein Intake CalculatorEstimate daily protein target from body weight and goal.WRCWaist-to-Hip Ratio CalculatorCalculate waist-to-hip ratio from waist and hip measurements.SCSleep CalculatorFind bedtime options based on wake time and 90-minute sleep cycles.WLCWeight Loss CalculatorEstimate time to reach a target weight from weekly loss rate.BSABody Surface Area CalculatorEstimate body surface area using the Mosteller formula.

Simple

Clean calculators for everyday tasks.

Formula-based

Tools include formulas and examples where useful.

Mobile-ready

Use the calculators on any device.

Frequently Asked Questions

Are these calculators free?

Yes. Calcroutine calculators are free to use.

Will more calculators be added?

Yes. This category will expand with more practical tools over time.

Can I use these calculators on mobile?

Yes. The layout is responsive for phones, tablets, and desktop screens.