Your All-in-One Calculator Hub
Over 200 free, accurate calculators for finance, health, math, and everyday decisions. No sign-up. No ads. Just answers.
Browse by Category
Choose a category to explore all calculators.
Financial
Mortgages, loans, investments, taxes, and all things money.
Fitness & Health
BMI, calories, macros, pregnancy, and body measurements.
Math
Scientific, algebra, statistics, geometry, and more.
Other
Age, date, time, conversions, and everyday tools.
Most Popular Calculators
The calculators people use most — all free, no account needed.
Mortgage Calculator
Find the full monthly mortgage payment: principal and interest plus property tax, homeowners insurance, PMI and HOA dues, and when PMI ends.
BMI Calculator
Calculate your Body Mass Index and see which weight category you fall into.
Percentage Calculator
Find X% of Y, what percent X is of Y, the whole when X is P% of it, or the percent change between two values.
Compound Interest Calculator
See how compounding grows your money over time.
Salary Calculator
Convert between hourly, weekly, biweekly, semi-monthly, monthly and annual salary amounts.
Age Calculator
Calculate your exact age in years, months, days, and hours.
Tip Calculator
Calculate tip amount and split the bill among any number of people.
Calorie Calculator
Find your daily calorie needs for maintenance, weight loss, or gain.
TDEE Calculator
Calculate your Total Daily Energy Expenditure, all the calories you burn per day.
Loan Calculator
Monthly payment, total interest and a month-by-month amortization schedule for a fixed-rate loan.
Scientific Calculator
Scientific calculator with sin, cos, tan, ln, log, square root, powers, factorial and memory keys, in degrees or radians, plus e to the x and an EE key.
Date Calculator
Add or subtract years, months, weeks and days from a date, or find the time between two dates in years, months and days.
GPA Calculator
Work out a term or cumulative GPA on a 4.0 scale, or a weighted GPA with Honors and AP/IB bonuses, from each course's letter grade and credits.
Simple Interest Calculator
Calculate non-compounded interest on a principal amount.
Body Fat Calculator
Estimate your body fat percentage using the US Navy method.
Financial Calculators
Mortgage Calculator
Find the full monthly mortgage payment: principal and interest plus property tax, homeowners insurance, PMI and HOA dues, and when PMI ends.
Loan Calculator
Monthly payment, total interest and a month-by-month amortization schedule for a fixed-rate loan.
Auto Loan Calculator
Monthly car loan payment with sales tax, fees, down payment and trade-in value, plus the amount financed and the total interest.
Interest Calculator
Calculate accrued interest over days or months, or growth over years with compounding and contributions.
Payment Calculator
Find the monthly payment on a fixed-rate or 0% loan, or how long a fixed monthly payment takes to pay it off, with the total payment and total interest.
Retirement Calculator
Project your savings balance at retirement, or find the monthly saving that reaches a target balance.
Fitness & Health Calculators
BMI Calculator
Calculate your Body Mass Index and see which weight category you fall into.
Calorie Calculator
Find your daily calorie needs for maintenance, weight loss, or gain.
Body Fat Calculator
Estimate your body fat percentage using the US Navy method.
BMR Calculator
Calculate your Basal Metabolic Rate, the calories you burn at rest.
Macro Calculator
Get daily calories and grams of protein, carbs and fat for maintaining, losing or gaining weight, or the standard adult ranges and keto macros for your calories.
Ideal Weight Calculator
Find your ideal body weight by four medical formulas, side by side for men and women, with the healthy BMI range for your height.
Math Calculators
Scientific Calculator
Scientific calculator with sin, cos, tan, ln, log, square root, powers, factorial and memory keys, in degrees or radians, plus e to the x and an EE key.
Fraction Calculator
Add, subtract, multiply or divide two fractions or mixed numbers and get the answer in lowest terms, with the steps.
Percentage Calculator
Find X% of Y, what percent X is of Y, the whole when X is P% of it, or the percent change between two values.
Triangle Calculator
Solve any triangle from sides and angles using the law of sines and cosines.
Volume Calculator
Calculate the volume of spheres, ellipsoids, cones, cylinders, cubes, rectangular prisms and pyramids.
Standard Deviation Calculator
Calculate population or sample standard deviation for any dataset.
Other Calculators
Age Calculator
Calculate your exact age in years, months, days, and hours.
Date Calculator
Add or subtract years, months, weeks and days from a date, or find the time between two dates in years, months and days.
Time Calculator
Convert a time value between seconds, minutes, hours, days, weeks, months and years.
Hours Calculator
Calculate total hours between two clock times, minus breaks.
GPA Calculator
Work out a term or cumulative GPA on a 4.0 scale, or a weighted GPA with Honors and AP/IB bonuses, from each course's letter grade and credits.
Grade Calculator
Calculate your weighted course grade and letter grade, or the score you need on the final exam.
Fast, Free & Accurate
Every calculator on calc-hub.net uses industry-standard formulas. Results appear as soon as you press the calculator's button, and a few update while you type. All calculators are free, with no registration and no ads. Calculations run in your browser, and nothing you type is stored. Use them on any device.