Master Calculator Directory
Browse our complete catalog of precision calculators across finance, mathematics, health metrics, unit conversions, construction, and everyday utilities.
Percentage Calculator
Calculate percentages, percentage change, increase, and decrease with step-by-step solutions.
Percentage Increase & Decrease Calculator
Calculate the new value after a percentage increase or decrease from an original value.
Fraction Calculator
Add, subtract, multiply, and divide fractions with step-by-step solutions and simplified results.
Ratio Calculator
Simplify ratios, find missing ratio values, and compare ratios using GCD.
Average (Mean) Calculator
Calculate the arithmetic mean of a set of numbers with count, sum, min, and max.
Weighted Average Calculator
Calculate weighted average by assigning different importance (weights) to each value.
Exponent Calculator
Calculate base raised to any power including negative and decimal exponents.
Square Root Calculator
Calculate the square root of any non-negative number with verification.
Logarithm Calculator
Calculate log base 10, natural log (ln), or any custom base logarithm.
Scientific Calculator
Full-featured scientific calculator with trig functions, logarithms, exponents, and memory.
Area Calculator
Calculate the area of 7 geometric shapes: square, rectangle, triangle, circle, parallelogram, trapezoid, and ellipse.
Perimeter Calculator
Calculate the perimeter (or circumference) of 6 geometric shapes.
Volume Calculator
Calculate the volume of 8 3D shapes: cube, cuboid, cylinder, cone, sphere, hemisphere, prism, and pyramid.
Pythagorean Theorem Calculator
Find any missing side of a right triangle using the Pythagorean theorem (a² + b² = c²).
Circle Calculator
Enter any one circle property (radius, diameter, circumference, or area) to calculate all others.
EMI Calculator
Calculate Equated Monthly Installment (EMI) for home, car, or personal loans with amortization table.
Loan Calculator
Calculate loan payments for monthly, quarterly, or yearly payment frequencies with full amortization.
Compound Interest Calculator
Calculate compound interest growth with flexible compounding frequencies (monthly, quarterly, semi-annually, annually).
CAGR Calculator
Calculate Compound Annual Growth Rate (CAGR) from initial and final values over a period.
ROI Calculator
Calculate Return on Investment (ROI) percentage from initial cost and final value.
SIP Calculator
Calculate future wealth from Systematic Investment Plan (SIP) monthly investments.
GST Calculator
Calculate GST inclusive and exclusive amounts with CGST/SGST split.
Markup vs Margin Calculator
Compare Markup percentage vs Profit Margin percentage for retail pricing decisions.
BMI Calculator
Calculate Body Mass Index (BMI) and check healthy weight ranges.
BMR & TDEE Calculator
Calculate Basal Metabolic Rate and Total Daily Energy Expenditure using Mifflin-St Jeor.
Universal Unit Converter
Universal unit conversion engine for length, mass, volume, temperature, speed, pressure, energy, power, data, and time.
Length Converter
Convert between meters, kilometers, centimeters, feet, inches, yards, and miles.
Height Converter
Convert height from cm to feet and inches (e.g., 175 cm = 5 ft 8.9 in).
Feet & Inches Converter
Parse and convert combined feet & inches (e.g. 5' 9" or 5 ft 9 in) to cm and meters.
Weight & Mass Converter
Convert between kilograms, grams, milligrams, pounds, ounces, and stones.
Kg to Pounds Converter
Dedicated converter for Kilograms to Pounds (kg → lbs).
Pounds to Kg Converter
Dedicated converter for Pounds to Kilograms (lbs → kg).
Stones to Pounds Converter
Convert stones and pounds (st & lbs) to kg and total pounds.
Area Converter
Convert square meters, square feet, acres, hectares, and square miles.
Temperature Converter
Convert between Celsius (°C), Fahrenheit (°F), and Kelvin (K).
Speed & Pace Converter
Convert km/h, mph, m/s, knots, and running pace (min/km, min/mile).
Data Storage Converter
Convert data units between SI Decimal (kB, MB, GB) and IEC Binary (KiB, MiB, GiB).
Cooking & Recipe Converter
Convert volume to weight (cups to grams) based on specific ingredient density.
Time Zone Converter
Convert local times between IANA timezones (Asia/Kolkata, America/New_York, Europe/London) with DST handling.
Concrete Calculator
Calculate concrete volume in m³, cu ft, and 50kg premix bag counts with waste margin.
Concrete Slab Calculator
Calculate concrete volume and 50kg bag counts specifically for patio, driveway, and house slabs.
Concrete Footing Calculator
Calculate total concrete volume for foundation footings.
Concrete Column Calculator
Calculate concrete volume for rectangular or square structural columns.
Concrete Mix Ratio Calculator
Calculate cement bags, sand, and aggregate needed for concrete mix ratios (1:2:4, 1:3:6).
Brick Wall Calculator
Calculate number of bricks needed for a wall including mortar joint dimensions.
Plaster Calculator
Calculate cement and sand for wall and ceiling plastering.
Rebar Steel Weight Calculator
Calculate weight of steel reinforcement bars (rebar) in kg and tonnes.
Paint Calculator
Estimate paint required in litres and 5L cans based on wall dimensions and coats.
Tile Calculator
Calculate tile count and box quantities for floor and wall tiling.
Board Feet Calculator
Calculate board feet volume for lumber and timber.
Square Footage Calculator
Calculate area in square feet and square meters for rooms and real estate.
Home Equity Calculator
Calculate estimated home equity amount and equity percentage.
Age Calculator
Calculate exact age in years, months, days, and days until next birthday.
Tip & Bill Splitter
Split restaurant bills and calculate per-person contribution with tip.
Love & Compatibility Test
Fun love compatibility score generator based on two names.
Date Difference Calculator
Calculate total days, weeks, months, and business days between two dates.
Days Between Dates Calculator
Quickly count calendar days between two dates.
Business Days Calculator
Count working days (Monday-Friday) between two dates.
Add Days to Date Calculator
Calculate future date by adding N calendar days to a starting date.
Subtract Days from Date Calculator
Calculate past date by subtracting N days from a date.
Leap Year Calculator
Check if any year is a Gregorian leap year.
Day of Week Calculator
Find what day of the week a date fell or will fall on.
Week Number Calculator
Find the ISO 8601 week number (1 to 53) for any date.
Days Remaining Calculator
Count days remaining until an upcoming event or deadline.
Unix Timestamp Converter
Convert Epoch Unix timestamps to human dates and vice versa.
Random Number Generator
Generate random integers within a custom minimum and maximum range.
Dice Roller
Simulate rolling single or multiple multi-sided dice.
Coin Flip Simulator
Flip virtual coins and see Heads/Tails results with tally.
GPA Calculator
Calculate grade point average (GPA) across college or high school courses.
CGPA to Percentage Calculator
Convert CGPA score to equivalent percentage marks.
Tip Calculator
Calculate tip amount and grand bill total.
Discount Calculator
Calculate final price after discount percentage and total savings.
Markup & Profit Margin Calculator
Calculate selling price and profit margin from cost price and markup %.
Statistics Calculator
Calculate mean, median, mode, standard deviation, and variance from a dataset.
Quadratic Equation Solver
Solve quadratic equations ax² + bx + c = 0 with real and complex roots.
Linear Equation Calculator
Solve linear equations of the form ax + b = c with detailed steps.
Simultaneous Equations Calculator
Solve 2x2 systems of linear equations using Cramer’s rule.
Matrix Calculator
Compute 3x3 matrix determinant, inverse, transpose, and multiplication.
Polynomial Calculator
Evaluate polynomial expressions, degrees, leading coefficients, and derivatives.
Triangle Calculator
Calculate triangle area, perimeter, internal angles, and height using Heron’s formula.
Right Triangle Calculator
Solve right triangles for legs, hypotenuse, angles, area, and perimeter.
Cube Calculator
Calculate cube volume, surface area, lateral area, and space diagonal.
Sphere Calculator
Calculate sphere volume, surface area, and diameter from radius.
Trigonometry Calculator
Calculate sine, cosine, tangent, arcsin, arccos, and arctan in degrees or radians.
Derivative Calculator
Compute symbolic derivatives f’(x) and numerical rates of change at x.
Integral Calculator
Compute definite integrals numerically using Simpson’s Rule.
Mean Calculator
Calculate arithmetic mean, total sum, and count for datasets.
Standard Deviation Calculator
Calculate sample and population standard deviation, variance, and mean.
Velocity Calculator
Calculate average velocity, speed in m/s, km/h, and mph from distance and time.
Force Calculator
Calculate force in Newtons using Newton’s Second Law F = m * a.
Molarity Calculator
Calculate molar concentration M = moles / liters for chemical solutions.
Molecular Weight Calculator
Calculate molecular mass and formula weight for chemical compounds.
GCD Calculator
Calculate Greatest Common Divisor (GCD/HCF) using the Euclidean Algorithm.
Prime Factorization Calculator
Find prime factors and prime exponent representation of any integer.
Loan Amortization Calculator
Generate a complete month-by-month amortization table for any loan.
Home Loan Calculator
Calculate home loan EMI, total interest, LTV ratio, and repayment summary.
Mortgage Calculator
Estimate your mortgage payment including principal, interest, and optional charges.
Auto Loan Calculator
Calculate car loan EMI, financed amount, and total cost of vehicle financing.
Personal Loan Calculator
Calculate personal loan EMI, total interest, and cost including processing fee.
Loan Eligibility Calculator
Estimate your maximum loan eligibility based on income, existing EMIs, and FOIR.
Loan-to-Value (LTV) Calculator
Calculate loan-to-value ratio, equity, and borrowing capacity against a property.
Refinance Calculator
Calculate monthly savings, total savings, and break-even period from refinancing a loan.
Mortgage Payoff Calculator
See how extra monthly payments reduce your loan tenure and total interest.
Extra Payment Loan Calculator
Calculate interest and tenure savings from additional loan payments.
Interest-Only Mortgage Calculator
Calculate interest-only loan payments and understand how principal remains unchanged.
Simple Interest Calculator
Calculate simple interest, total amount, and interest earned on any investment or loan.
SIP Step-Up Calculator
Calculate SIP corpus with annual step-up in monthly contribution.
Lump Sum Investment Calculator
Calculate future value of a one-time lump sum investment.
SWP Calculator
Estimate systematic withdrawal plan balance and total withdrawals.
Mutual Fund Return Calculator
Calculate absolute and annualized returns on a mutual fund investment.
XIRR Calculator
Calculate XIRR for irregular cash flows including SIP investments and partial withdrawals.
IRR Calculator
Calculate Internal Rate of Return (IRR) for periodic cash flows.
Retirement Calculator
Estimate corpus needed for retirement and project shortfall or surplus.
Retirement Contribution Calculator
Project retirement corpus from employee and employer contributions with salary growth.
Investment Return Calculator
Calculate total return, absolute return, and annualized return on any investment.
Budget Calculator
Calculate monthly budget, savings rate, and expense breakdown.
Monthly Expense Calculator
Calculate total monthly and annual expenses across custom categories.
Net Worth Calculator
Calculate your total net worth from assets and liabilities.
Salary Calculator
Calculate monthly take-home salary from CTC with PF and professional tax deductions.
Salary to Hourly Calculator
Convert annual salary to equivalent hourly rate based on working hours.
Hourly to Salary Calculator
Convert hourly rate to equivalent annual and monthly salary.
Income Tax Calculator
Estimate income tax for FY 2026-27 under New and Old tax regimes.
TDS Calculator
Estimate TDS deduction based on payment type and applicable section.
Tax Percentage Calculator
Calculate tax amount and total price from a pre-tax amount and custom tax rate.
Inflation Calculator
Calculate future cost of goods and impact of inflation on purchasing power.
Break-Even Calculator
Calculate break-even units and revenue from fixed costs and contribution margin.
Profit Margin Calculator
Calculate net profit margin from revenue and total cost.
Gross Margin Calculator
Calculate gross profit and gross margin from revenue and cost of goods sold.
Operating Margin Calculator
Calculate operating profit and operating margin from revenue, COGS, and expenses.
Revenue Calculator
Calculate total revenue from units sold and price per unit.
Profit Calculator
Calculate gross, operating, and net profit from revenue and expenses.
Contribution Margin Calculator
Calculate contribution margin and contribution margin ratio from revenue and variable costs.
Payroll Calculator
Calculate total monthly and annual payroll cost including employer contributions.
Commission Calculator
Calculate commission from flat rate or tiered commission structures.
Business ROI Calculator
Calculate business Return on Investment from investment cost and generated revenue.
Unit Economics Calculator
Calculate LTV, CAC, contribution margin, and LTV:CAC ratio for your business.
CAC Calculator
Calculate Customer Acquisition Cost from total sales and marketing spend.
LTV Calculator
Calculate Customer Lifetime Value (LTV) using transaction model.
LTV:CAC Ratio Calculator
Calculate the LTV to CAC ratio to evaluate customer acquisition efficiency.
BMI Prime Calculator
Calculate BMI Prime ratio comparing body mass index to upper normal limit (25.0).
Body Fat Percentage Calculator
Estimate body fat percentage using the U.S. Navy circumference method.
Ideal Weight Calculator
Calculate estimated ideal body weight using Devine, Robinson, Miller, and Hamwi formulas.
BMR Calculator
Calculate Basal Metabolic Rate (BMR) using Mifflin-St Jeor and Harris-Benedict equations.
TDEE Calculator
Calculate Total Daily Energy Expenditure (TDEE) based on activity level.
Lean Body Mass Calculator
Calculate Lean Body Mass (LBM) and fat mass from weight and body fat percentage.
Body Surface Area Calculator
Calculate Body Surface Area (BSA) using the Mosteller formula.
Waist-to-Height Ratio Calculator
Calculate Waist-to-Height Ratio (WHtR) to assess central adiposity.
Waist-to-Hip Ratio Calculator
Calculate Waist-to-Hip Ratio (WHR) to assess fat distribution pattern.
Calorie Deficit Calculator
Calculate daily intake targets and theoretical weekly fat loss based on calorie deficit.
Macro Calculator
Calculate daily protein, carbohydrate, and fat gram targets.
Protein Intake Calculator
Calculate daily protein requirements based on body weight and activity level.
Pregnancy Due Date Calculator
Estimate pregnancy due date using Naegele’s rule from Last Menstrual Period (LMP).
Pregnancy Week Calculator
Calculate current gestational age in weeks and days and identify trimester.
Conception Date Calculator
Estimate conception date from due date or last menstrual period.
Ovulation Calculator
Estimate ovulation date and fertile days based on menstrual cycle length.
Fertile Window Calculator
Calculate the 6-day fertile window for conception planning.
Pregnancy Weight Gain Calculator
Calculate Institute of Medicine (IOM) recommended pregnancy weight gain ranges.
Calorie Burn Calculator
Estimate calories burned during physical activities using MET values.
Running Pace Calculator
Calculate running pace per kilometer and per mile from time and distance.
Running Speed Calculator
Calculate average running speed in km/h and mph.
Running Time Calculator
Estimate total running time from distance and target pace.
1RM Strength Calculator
Calculate One-Rep Max (1RM) using Epley and Brzycki strength formulas.
VO2 Max Calculator
Estimate aerobic capacity (VO2 Max) using Cooper or Rockport field tests.
Water Intake Calculator
Calculate daily fluid hydration targets based on body weight and exercise activity.
Heart Rate Zone Calculator
Calculate 5 training heart rate zones using Tanaka and Karvonen formulas.
Target Heart Rate Calculator
Calculate target heart rate for specific exercise intensity percentages.
Steps to Distance Calculator
Convert daily step counts to kilometers and miles based on stride length.
Walking Pace Calculator
Calculate walking pace per kilometer and per mile.
Cycling Calories Calculator
Calculate calories burned during outdoor cycling or stationary biking.
Swimming Calories Calculator
Calculate calories burned swimming freestyle, breaststroke, butterfly, or leisure laps.