Free Online CalculatorsFinance, health, math, and everyday tools
Calculate mortgage payments, BMI, calories, loans, GPA, and everyday math. Results run in your browser.
Scientific & Universal Calculator
Health & Fitness
Body metrics, nutrition, metabolic limits, and pregnancy tracking.
BMI Calculator
Calculate your Body Mass Index and identify health risk categories based on WHO standards.
Calorie Calculator
Estimate your daily calorie needs for weight loss, gain, or maintenance.
BMR Calculator
Determine your Basal Metabolic Rate — the energy your body needs at rest.
TDEE Calculator
Discover your Total Daily Energy Expenditure for calorie planning.
Body Fat Calculator
Advanced body composition analysis using Navy and BMI methods.
Ideal Weight Calculator
Find your optimal weight range across scientific formulas.
Healthy Weight Calculator
Comprehensive height-to-weight analysis against global standards.
Lean Body Mass Calculator
Estimate your fat-free mass for metabolic health assessment.
Financial
Mortgage rates, investments growth, loans payoffs, and taxation budgets.
Mortgage Calculator
Calculate monthly mortgage payments including PITI and extra payments.
Mortgage Payoff Calculator
See how extra payments save time and money on your mortgage.
House Affordability Calculator
Determine how much house you can afford based on income.
Rent Calculator
Find how much rent you can afford based on financial rules.
Rent vs. Buy Calculator
Compare renting vs buying based on investment opportunity costs.
Refinance Calculator
Calculate lifetime savings and break-even point for refinancing.
Rental Property Calculator
Analyze real estate investments — Cash Flow, Cap Rate, NOI.
FHA Loan Calculator
Estimate FHA payments including Upfront and Annual MIP.
Math & Science
Algebra formulas, advanced geometry, probabilities, and statistical variance.
Area Calculator
Calculate the area of various geometric shapes.
Big Number Calculator
Perform arithmetic operations on very large numbers.
Binary Calculator
Calculate using binary numbers.
Circle Calculator
Calculate area, circumference, and radius of a circle.
Confidence Interval Calculator
Calculate the confidence interval for your data.
Distance Calculator
Calculate the distance between two points.
Exponent Calculator
Calculate exponential values.
Factor Calculator
Find the factors of any number.
Everyday & Utilities
Unit conversions, concrete estimations, age limits, and networking IT tools.
Age Calculator
Calculate exact age in years, months, and days based on Date of Birth.
Time Calculator
Add or subtract hours, minutes, and seconds. Essential for payroll and timesheets.
GPA Calculator
Calculate semester and cumulative GPA with course credits and letter grades.
IP Subnet Calculator
Calculate network address, broadcast address, and host range.
Password Generator
Generate secure, random passwords with custom rules.
Unit Converter
Convert between various units of length, weight, and temperature.
Grade Calculator
Calculate your current class grade or the final exam score needed to pass.
Bandwidth Calculator
Calculate file download/upload times and convert network speeds.