Free Online Calculators
Fast, accurate calculators for finance, health, math, and everyday decisions. No sign up required.
3D Printing Cost Calculator
Calculate 3D printing costs with materials and time
UniqueAge Calculator
Calculate exact age in years, months, days, and hours
Airbnb Income Calculator
Calculate Airbnb rental income and compare to long-term rentals
UniqueAlcohol Unit Calculator
Calculate alcohol units in different drinks for safe drinking
Average Calculator
Calculate mean, median, mode, and range of numbers
Baby Name Numerology Calculator
Calculate baby name numerology and meaning for any name
BAC Calculator
Estimate blood alcohol content for educational purposes
Beam Calculator
Calculate beam deflection, moment, and shear force
ProBitcoin Profit Calculator
Calculate Bitcoin investment profits, losses, and ROI instantly
TrendingBMI Calculator
Check your body mass index and find your healthy weight range
PopularBMR Calculator
Calculate basal metabolic rate to know daily calorie needs
Body Fat Calculator
Calculate body fat percentage using measurements
BRRRR Calculator
Calculate BRRRR real estate investment returns and equity
ProCaffeine Calculator
Calculate daily caffeine intake from various sources
CAGR Calculator
Calculate compound annual growth rate for any investment
Most UsedCalorie Calculator
Calculate daily calorie intake for weight loss or gain
Car Loan Calculator
Calculate auto loan EMI with interest rate and down payment options
Carbon Footprint Calculator
Calculate personal carbon footprint and get reduction tips
TrendingCat Age Calculator
Convert cat years to human years with veterinary accuracy
Closing Cost Calculator
Estimate home buying closing costs and cash needed
College GPA Calculator
Calculate college GPA with credit hour weighting
PopularCompound Interest Calculator
Calculate compound interest with various compounding frequencies
Concrete Calculator
Calculate concrete volume needed for construction projects
PopularCrypto Tax Calculator
Calculate crypto capital gains tax with multiple accounting methods
PopularDate Calculator
Calculate days between dates and add or subtract days
DeFi Yield Calculator
Calculate DeFi yield farming returns and impermanent loss
AI PoweredDiscount Calculator
Calculate discount percentage and final price after discount
Dividend Calculator
Calculate dividend income, yield, and reinvestment growth
Dog Age Calculator
Convert dog years to human years with breed-specific accuracy
UniqueDollar Cost Average Calculator
Calculate dollar cost averaging returns and compare to lump sum
PopularDown Payment Calculator
Calculate down payment amounts and PMI requirements
EMI Calculator
Calculate monthly loan payments with interest breakdown and amortization schedule
EPF Calculator
Calculate Employee Provident Fund maturity amount
Ethereum Gas Fee Calculator
Estimate Ethereum gas fees and transaction costs in real-time
FD Calculator
Calculate fixed deposit maturity amount and interest earned
Final Grade Calculator
Calculate required final exam grade for target course grade
FIRE Calculator
Calculate your FIRE number and early retirement timeline
TrendingFraction Calculator
Add, subtract, multiply, and divide fractions
Gear Ratio Calculator
Calculate gear ratios, speed, and torque for gear systems
Grade Calculator
Calculate GPA and final grades for students
Gratuity Calculator
Calculate gratuity amount based on years of service
GST Calculator
GST Calculator – Calculate GST, VAT & Sales Tax Online Free 💰 Tax Tool GST Calculator – Add or Remove GST, VAT & Sales Tax Online Calculate goods and services tax instantly. Add GST to a price or remove GST from a total. Works with any tax rate for all countries including VAT and sales […]
Home Loan EMI Calculator
Calculate home loan monthly payments with detailed amortization schedule
House Flipping Calculator
Calculate house flipping profits with all costs included
HRA Calculator
Calculate house rent allowance tax exemption amount
Hydraulic Cylinder Calculator
Calculate hydraulic cylinder force and pressure requirements
Ideal Weight Calculator
Find your ideal body weight based on height and gender
Income Tax Calculator
Calculate income tax liability for current financial year
Lean Body Mass Calculator
Calculate lean muscle mass and body composition
LED Resistor Calculator
Calculate LED current-limiting resistor values
Life Expectancy Calculator
Estimate life expectancy based on lifestyle and health factors
UniqueLottery Odds Calculator
Calculate lottery winning odds for any game configuration
UniqueLove Calculator
Calculate love compatibility percentage between two names
TrendingLumpsum Calculator
Calculate returns on one-time investment in mutual funds
Macro Calculator
Calculate macronutrient ratios for diet goals
Markup Calculator
Calculate markup percentage and selling price from cost
Mining Profitability Calculator
Calculate crypto mining profits with electricity and hardware costs
Mortgage Affordability Calculator
Calculate how much house you can afford based on income
Most UsedMortgage Refinance Calculator
Calculate mortgage refinance savings and break-even point
Net Worth Calculator
Calculate total net worth with assets and liabilities
PopularNFT Profit Calculator
Calculate NFT profits with fees, royalties, and gas costs
UniqueNPS Calculator
Calculate National Pension Scheme maturity and monthly pension
Ohms Law Calculator
Calculate voltage, current, resistance with Ohms Law
Most UsedOvulation Calculator
Calculate fertile window and ovulation days
Pace Calculator
Calculate running pace and time for different distances
Percentage Calculator
Find percentages, increases, decreases, and differences instantly
TrendingPercentage Change Calculator
Calculate percentage change with positive or negative values
Percentage Decrease Calculator
Calculate percentage decrease between two values
Percentage Increase Calculator
Calculate percentage increase between two numbers
Personal Loan Calculator
Calculate personal loan EMI and total interest payable
PPF Calculator
Calculate Public Provident Fund maturity amount and returns
Pregnancy Calculator
Calculate due date and pregnancy week by week
Profit Margin Calculator
Calculate gross and net profit margins for your business
Property Tax Calculator
Estimate property taxes based on home value and location
Protein Calculator
Calculate daily protein intake for muscle building
Pulley Calculator
Calculate pulley mechanical advantage and belt lengths
Ratio Calculator
Calculate and simplify ratios and proportions
RD Calculator
Calculate recurring deposit maturity value with monthly installments
Reading Time Calculator
Calculate reading time based on word count and speed
Rent vs Buy Calculator
Compare renting vs buying a home with full cost analysis
PopularRental Property ROI Calculator
Calculate rental property ROI, cap rate, and cash flow
Resistor Color Code Calculator
Decode resistor color bands to resistance values
ROI Calculator
Calculate return on investment percentage and profit
Scientific Calculator
Advanced calculator with trigonometric and logarithmic functions
Screen Time Calculator
Calculate screen time and digital wellness insights
TrendingSimple Interest Calculator
📊 Basic Interest Tool Simple Interest Calculator – Easy Interest Calculator Calculate simple interest on loans, deposits, and investments instantly. Find interest amount, total value, and monthly returns with our free simple interest calculator. Perfect for personal loans, savings accounts, and short-term investments worldwide. How it Works FAQ Simple Interest Calculator Calculate interest on principal […]
SIP Calculator
Estimate mutual fund returns with systematic investment planning
Sleep Calculator
Calculate optimal sleep and wake times based on sleep cycles
PopularStaking Rewards Calculator
Calculate crypto staking rewards and compound earnings
Stock Options Calculator
Calculate stock option values and break-even points
Student Loan Calculator
Calculate student loan payments and compare repayment plans
Most UsedSukanya Samriddhi Calculator
Calculate SSY account maturity value for girl child
SWP Calculator
Calculate systematic withdrawal plan from mutual fund investments
TDEE Calculator
Calculate total daily energy expenditure based on activity level
TDS Calculator
Calculate tax deducted at source for salary and other income
Time Calculator
Add, subtract, and calculate time duration
Tip Calculator
Calculate tip amount and split bills among friends
Typing Speed Calculator
Calculate typing speed in WPM with accuracy tracking
Water Intake Calculator
Calculate daily water intake based on weight and activity
Wire Gauge Calculator
Calculate correct wire gauge for safe electrical wiring
Why Use Online Calculators?
Online calculators have become essential tools for millions of people worldwide. Whether you are planning your finances, tracking your health goals, or solving complex math problems, having access to accurate and reliable calculators makes life easier. At ToolsInstant, we offer a comprehensive collection of free calculators designed to help you make informed decisions quickly.
Our calculators cover a wide range of categories including financial planning, health and fitness tracking, mathematical computations, business analysis, and everyday practical needs. Each calculator is built with precision and tested for accuracy, ensuring you get dependable results every time you use them.
Financial Calculators for Smart Money Management
Managing your money effectively requires the right tools. Our EMI Calculator helps you understand your monthly loan payments before you commit to any borrowing. The SIP Calculator shows you how systematic investments can grow over time through the power of compounding. For those planning major purchases, our mortgage and car loan calculators provide detailed breakdowns of payments, interest, and total costs.
Investment planning becomes straightforward with tools like our compound interest calculator, which demonstrates how your savings can multiply over the years. Business owners benefit from profit margin calculators and ROI tools that help analyze deals and pricing strategies.
Health and Fitness Calculators
Your health journey deserves accurate tracking. Our BMI Calculator provides instant body mass index readings along with healthy weight ranges. The TDEE Calculator determines your total daily energy expenditure, which is crucial for weight management. Fitness enthusiasts use our protein calculator and macro calculator to optimize their nutrition for muscle building or fat loss.
We also offer specialized health tools including pregnancy calculators for expecting mothers, pace calculators for runners, and water intake calculators to help you stay properly hydrated throughout the day.
Math and Science Tools
Students and professionals alike benefit from our mathematical calculators. From basic percentage calculations to complex scientific functions, our tools handle computations with precision. The percentage calculator solves increase, decrease, and difference problems instantly. Our ratio and fraction calculators simplify mathematical concepts that often cause confusion.
Always Free, Always Accurate
Every calculator on ToolsInstant is completely free to use with no registration required. We believe everyone deserves access to quality tools without barriers. Our calculators work on any device including phones, tablets, and computers. Results appear instantly, and you can use our tools as many times as you need.
Browse our complete collection above and bookmark your favorites for quick access. If you cannot find a specific calculator you need, feel free to request it and our team will work on adding it to our library.
Need a specific calculator?
We add new calculators every week based on user requests.