Best Free CalculatorsMenu

The Suite · 84 Calculators

All free online calculators, presented for selection.

Filter by discipline or search by name. Every calculator on Best Free Calculators computes live in your browser, copies in one tap, and shares as easily — completely free with no signup.

Showing 17 of 84Clear Filter ×
No. 01Health
⊙

BMI Calculator

Calculate your Body Mass Index

Open
No. 02Health
🔥

Calorie Calculator

Calculate daily calorie needs

Open
No. 03Health
🔥

BMR Calculator

Calculate Basal Metabolic Rate

Open
No. 04Health
💧

Water Intake Calculator

Calculate daily water intake

Open
No. 05Health
💪

Workout Calculator

Calculate calories burned during workout

Open
No. 06Health
🔥

TDEE Calculator

Calculate total daily energy expenditure

Open
No. 07Health
🩺

Blood Pressure Calculator

Evaluate blood pressure readings

Open
No. 08Health
💪

Body Fat Calculator

Estimate body fat percentage

Open
No. 09Health
🥗

Macro Calculator

Calculate macronutrient breakdown

Open
No. 10Health
🤰

Pregnancy Calculator

Calculate gestational age, due date, and trimester information

Open
No. 11Health
❤️

Heart Rate Zone Calculator

Calculate target heart rate zones for different exercise intensities

Open
No. 12Health
⚖️

Ideal Body Weight

Calculate ideal body weight based on height and gender

Open
No. 13Health
📏

Waist-to-Hip Ratio

Calculate waist-to-hip ratio and health risk category

Open
No. 14Health
❤️

LDL Cholesterol Calculator

Calculate LDL cholesterol using the Friedewald formula

Open
No. 15Health
💊

Drug Dosage Calculator

Calculate medication dosage based on patient weight

Open
No. 16Health
🫘

eGFR Calculator

Calculate estimated Glomerular Filtration Rate using the CKDEPI equation

Open
No. 17Health
🏃

TDEE Calculator (Mifflin-St Jeor)

Calculate Total Daily Energy Expenditure using the Mifflin-St Jeor formula

Open