All Calculators
55 free tools across 7 categories
Math & Science
9Percentage Calculator
Calculate percentages, percentage change, and percentage of a number instantly.
★ Popular Scientific Calculator
Full-featured scientific calculator with trig, logarithms, and advanced functions.
★ Popular Fraction Calculator
Add, subtract, multiply and divide fractions with step-by-step solutions.
Quadratic Equation Solver
Solve ax²+bx+c=0 and find real or complex roots with step-by-step working.
Statistics Calculator
Mean, median, mode, standard deviation, and variance for any data set.
Prime Number Checker
Check if a number is prime and find all prime factors instantly.
GCD & LCM Calculator
Find the Greatest Common Divisor and Least Common Multiple of multiple numbers.
Random Number Generator
Generate random numbers, lists, and roll dice with full customization.
Average Calculator
Calculate mean, weighted average, and running average for any numbers.
Finance & Money
19Loan Calculator
Calculate monthly payments, total interest, and full amortization schedule for any loan.
★ Popular Mortgage Calculator
Calculate monthly mortgage payments, PITI, and complete amortization schedule.
★ Popular Compound Interest Calculator
Calculate investment growth with compound interest and additional contributions.
★ Popular EMI Calculator
Calculate Equated Monthly Installment for any loan with amortization schedule.
★ Popular Savings Goal Calculator
Calculate how long to reach your savings goal with interest.
★ Popular Net Worth Calculator
Calculate your total net worth: assets minus liabilities.
★ Popular Budget Planner
Plan your monthly budget using the 50/30/20 or 70/20/10 rule.
★ Popular Retirement Calculator
Project your retirement savings with inflation-adjusted returns and 4% rule.
★ Popular Investment Return Calculator
Calculate future value for lump sum or SIP investments with real returns.
★ Popular CAGR Calculator
Calculate Compound Annual Growth Rate or project future value from CAGR.
★ Popular ROI Calculator
Calculate return on investment, annualised return, and profit multiple.
Stock Return Calculator
Calculate total stock return including dividends, fees, and annualised CAGR.
Break-Even Calculator
Find the break-even point in units and revenue for any business.
Debt Payoff Calculator
Calculate payoff timeline and interest saved with extra monthly payments.
Fixed Deposit & RD Calculator
Calculate maturity for Fixed Deposits, Recurring Deposits, and PPF.
Income Tax Calculator
Estimate 2025 US federal income tax with bracket breakdown.
Salary Calculator
Convert hourly to annual salary and calculate net take-home pay.
Inflation Calculator
Calculate inflation-adjusted purchasing power over any time period.
VAT Calculator
Add or remove VAT from any price at any rate instantly.
Health & Fitness
8BMI Calculator
Calculate Body Mass Index and find your healthy weight range.
★ Popular Calorie Calculator
Calculate daily calorie needs (TDEE) for weight loss or gain.
★ Popular Body Fat Calculator
Estimate body fat percentage using the US Navy circumference method.
Age Calculator
Calculate exact age in years, months, days, hours, and minutes.
Pregnancy Due Date Calculator
Calculate due date from LMP, conception date, or ultrasound.
Ideal Weight Calculator
Find ideal body weight using Hamwi, Devine, Robinson, and Miller formulas.
Water Intake Calculator
Calculate daily water intake based on weight, activity, and climate.
Sleep Calculator
Find optimal bedtime and wake time based on 90-minute sleep cycles.
Unit Conversion
7Length Converter
Convert between meters, feet, inches, km, miles, and 15+ units.
★ Popular Temperature Converter
Convert between Celsius, Fahrenheit, Kelvin, and Rankine.
★ Popular Currency Converter
Convert between 25+ world currencies with reference exchange rates.
★ Popular Weight Converter
Convert between kg, lbs, oz, stones, tons, and 10+ weight units.
Speed Converter
Convert between mph, km/h, m/s, knots, and Mach number.
Data Storage Converter
Convert between bits, bytes, KB, MB, GB, TB, and PB.
Number System Converter
Convert between binary, decimal, octal, and hexadecimal.
Date & Time
2Construction
5Area Calculator
Calculate area of square, rectangle, circle, triangle and more.
★ Popular Concrete Calculator
Calculate concrete volume for slabs, columns, and footings.
Flooring Calculator
Calculate flooring area and material cost with waste factor.
Paint Calculator
Calculate paint needed for any room including walls and ceilings.
Tile Calculator
Calculate tiles needed for floors or walls with waste allowance.
Everyday Life
5Tip Calculator
Calculate restaurant tips and split bills among any number of people.
★ Popular Discount Calculator
Calculate sale price, discount amount, and savings percentage.
Fuel Cost Calculator
Calculate trip fuel cost and gas mileage in MPG or L/100km.
Electricity Cost Calculator
Calculate electricity cost for any appliance per day, month, or year.
Gratuity Calculator
Calculate end-of-service gratuity payment for India, UAE, or generic formula.