Free Online Calculators for Every Need
258+ free calculators for finance, health, math, conversions, and more. Fast, accurate, and easy to use — no signup required.
Browse by Category
Explore our collection of free calculators organized into 13 categories.
Financial Calculators
77Mortgage, loan, investment, tax, and business calculators for smart financial decisions.
Health & Fitness Calculators
39BMI, calorie, pregnancy, fitness, and nutrition calculators for your wellness journey.
Math Calculators
50Scientific, algebra, geometry, statistics, and number theory tools for every math problem.
Date & Time Calculators
23Age, date difference, countdown, and time zone calculators for all your scheduling needs.
Conversion Calculators
10Unit converters for length, weight, temperature, volume, speed, and more.
Construction & Home Calculators
11Material estimators, area calculators, and home improvement planning tools.
Science Calculators
8Physics and chemistry calculators for students, researchers, and enthusiasts.
Education Calculators
4GPA, grade, study planning, and academic performance calculators.
Everyday Life Calculators
16Tip, discount, fuel cost, and other practical calculators for daily life.
Weather Calculators
3Wind chill, heat index, dew point, and weather-related calculations.
Tech & Networking Calculators
2Bandwidth, subnet, data storage, and networking calculators for IT professionals.
Astrology & Spiritual Calculators
12Birth chart, zodiac compatibility, numerology, and spiritual exploration tools.
Travel Calculators
3Flight time, currency conversion, packing, and travel planning calculators.
Most Popular Calculators
Our most-used calculators trusted by millions of users worldwide.
Mortgage Calculator
Calculate your monthly mortgage payments, total interest, and amortization schedule.
Loan Calculator
Calculate monthly loan payments, total interest, and payoff timeline for any loan type.
Compound Interest Calculator
Calculate how your money grows over time with compound interest and regular contributions.
Salary Calculator
Convert between hourly, weekly, biweekly, monthly, and annual salary amounts.
Currency Calculator
Convert between world currencies using up-to-date exchange rates.
BMI Calculator
Calculate your Body Mass Index to determine if your weight is in a healthy range.
Body Fat Calculator
Estimate your body fat percentage using body measurements and proven formulas.
Calorie Calculator
Calculate your daily calorie needs for weight loss, maintenance, or muscle gain.
TDEE Calculator
Calculate your Total Daily Energy Expenditure to understand your daily calorie burn.
BMR Calculator
Calculate your Basal Metabolic Rate to find how many calories your body burns at rest.
Scientific Calculator
Perform advanced mathematical calculations including trigonometry, logarithms, and exponents.
Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step solutions.
Percentage Calculator
Calculate percentages, percentage changes, and percentage differences between values.
Standard Deviation Calculator
Calculate standard deviation, variance, and mean for a data set with step-by-step solution.
Age Calculator
Calculate your exact age in years, months, days, hours, and minutes from your birthdate.
Date Calculator
Add or subtract days, weeks, months, and years from any date to find a target date.
GPA Calculator
Calculate your grade point average from course grades and credit hours on a 4.0 scale.
Tip Calculator
Calculate the tip amount and split the bill evenly among any number of people.
Mortgage Amortization Calculator
View a detailed amortization schedule showing principal and interest breakdown for each payment.
Mortgage Payoff Calculator
Find out how quickly you can pay off your mortgage with extra payments and save on interest.
Recently Added
The latest calculators added to our growing collection.
Directions Calculator
Calculate compass bearing and direction between two geographic coordinates.
Coordinates Calculator
Convert between coordinate formats (decimal degrees, DMS) and find coordinates on a map.
Distance Between Cities Calculator
Calculate the driving and straight-line distance between any two cities worldwide.
Friday Prayer Time Calculator
Find the Friday Jummah prayer time for your location based on sun position calculations.
Eid Prayer Time Calculator
Find Eid prayer times for your location for both Eid al-Fitr and Eid al-Adha.
Ramadan Day Calculator
Find out which day of Ramadan it is and get suhoor and iftar times for your location.
Hijri Calendar Converter
Convert dates between the Hijri (Islamic) calendar and the Gregorian calendar.
Qibla Finder
Find the Qibla direction from your location using GPS coordinates and compass bearing.
Why CalculatorGlobe?
258+ Free Calculators
Comprehensive tools for every calculation need
No Registration Required
Use any calculator instantly without signing up
Verified Formulas
Industry-standard calculations from authoritative sources
Mobile-Friendly Design
Works perfectly on any device or screen size
Updated for 2026
Current rates, formulas, and data you can trust
Frequently Asked Questions
Yes, every calculator on CalculatorGlobe is 100% free with no registration, subscriptions, or hidden fees. Simply visit the calculator page and start calculating instantly.
Our calculators use industry-standard formulas based on authoritative sources. Financial calculators follow standard amortization and compounding formulas, health calculators use medically recognized equations, and math tools implement peer-reviewed algorithms. We recommend consulting a professional for important financial or medical decisions.
No account or signup is required. All calculators are instantly accessible. We believe in removing barriers so you can get answers as quickly as possible.
Absolutely. Every calculator is designed mobile-first with responsive layouts, large touch targets, and optimized performance. They work seamlessly on smartphones, tablets, and desktop computers across all modern browsers.
We continuously update our calculators to reflect current rates, formulas, and best practices. Financial calculators are reviewed annually for rate accuracy, health calculators follow the latest medical guidelines, and all tools undergo regular quality checks.