All Calculators

Browse 154+ free online calculators across 8 categories.

Health

BMI Calculator

Calculate Body Mass Index using CDC and WHO standard formulas. Supports metric and imperial units with age and gender adjusted ranges.

BMR Calculator

Calculate Basal Metabolic Rate using the Mifflin-St Jeor equation. Determines daily calorie needs at rest.

Body Fat Calculator

Estimate body fat percentage using the U.S. Navy circumference method.

Calorie Deficit Calculator

Calculate the daily calorie deficit needed to reach your weight loss goal safely.

Macro Calculator

Calculate optimal macronutrient ratios (protein, carbs, fat) based on your goals.

Water Intake Calculator

Calculate recommended daily water intake based on weight, activity level, and climate.

Ideal Weight Calculator

Calculate ideal body weight using multiple validated formulas (Devine, Robinson, Miller, Hamwi).

Pregnancy Due Date Calculator

Calculate estimated due date and pregnancy milestones using Naegele's rule.

Ovulation Calculator

Estimate ovulation date and fertile window based on menstrual cycle data.

Period Calculator

Predict next period date and track menstrual cycle patterns.

Heart Rate Zone Calculator

Calculate target heart rate zones for exercise using the Karvonen formula.

Calories Burned Calculator

Estimate calories burned during various physical activities using MET values.

Meal Plan Generator

Generate personalized meal plans based on calorie and macro targets.

Workout Generator

Generate customized workout plans based on fitness goals and experience level.

TDEE Calculator

Calculate Total Daily Energy Expenditure based on BMR and activity level using Mifflin-St Jeor equation.

Protein Intake Calculator

Calculate optimal daily protein intake based on body weight, activity level, and fitness goals.

Sleep Calculator

Calculate optimal bedtime and wake-up times based on 90-minute sleep cycles.

Blood Pressure Calculator

Categorize blood pressure readings according to AHA guidelines and track trends.

Blood Type Compatibility Calculator

Determine blood type compatibility for transfusion and predict offspring blood types.

Due Date Calculator

Calculate pregnancy due date from last menstrual period or conception date.

Blood Alcohol Content Calculator

Estimate blood alcohol concentration using the Widmark formula based on drinks, weight, and time.

Running Pace Calculator

Calculate running pace, finish time, or distance for races and training.

One Rep Max Calculator

Estimate one-rep max (1RM) using the Epley, Brzycki, and Lombardi formulas.

Body Surface Area Calculator

Calculate body surface area (BSA) using the Du Bois, Mosteller, and Haycock formulas.

Finance

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Loan Calculator

Calculate monthly loan payments, total interest, and amortization schedule using standard annuity formula.

Mortgage Calculator

Calculate monthly mortgage payments with taxes, insurance, and PMI. Full amortization schedule.

Compound Interest Calculator

Calculate compound interest growth over time with regular contributions.

Retirement Calculator

Project retirement savings based on current savings, contributions, and expected returns.

Savings Calculator

Calculate how savings grow over time with regular deposits and interest.

Inflation Calculator

Calculate the impact of inflation on purchasing power over time.

Credit Card Payoff Calculator

Calculate how long it takes to pay off credit card debt and total interest paid.

Car Loan Calculator

Calculate monthly car loan payments with trade-in and down payment.

Personal Loan Calculator

Calculate personal loan payments and total cost of borrowing.

Home Loan Calculator

Calculate home loan EMI, total interest, and amortization schedule.

Debt-to-Income Calculator

Calculate debt-to-income ratio used by lenders for loan qualification.

401(k) Calculator

Project 401(k) retirement savings with employer match and tax benefits.

Budget Planner

Create a personal budget using the 50/30/20 rule and custom categories.

Home Energy Cost Calculator

Calculate monthly and annual home energy costs based on appliance usage.

Paycheck Calculator

Calculate net pay after federal and state taxes, FICA, and deductions.

Sales Tax Calculator

Calculate sales tax amount and total price for any US state or custom rate.

CD Calculator

Calculate certificate of deposit returns with APY, compounding frequency, and early withdrawal penalties.

Investment Calculator

Project investment growth with regular contributions, compound interest, and inflation adjustment.

Amortization Calculator

Generate a full loan amortization schedule showing principal and interest breakdown per payment.

Down Payment Calculator

Calculate the required down payment for a home purchase and its impact on monthly payments and PMI.

Income Tax Calculator

Estimate federal and state income tax based on filing status, income, and deductions.

EMI Calculator

Calculate Equated Monthly Installment for loans with detailed payment breakdown.

SIP Calculator

Calculate Systematic Investment Plan returns for mutual fund investments.

FD Calculator

Calculate Fixed Deposit maturity amount with quarterly compounding and TDS impact.

GST Calculator

Calculate Goods and Services Tax for Indian and international tax compliance.

Net Worth Calculator

Calculate total net worth by summing all assets and subtracting all liabilities.

ROI Calculator

Calculate return on investment with annualized returns and comparison benchmarks.

Currency Converter

Convert between world currencies with real-time exchange rates and historical data.

Auto Loan Calculator

Calculate monthly auto loan payments, total interest, and compare financing options.

Home Affordability Calculator

Calculate how much home you can afford based on income, debts, down payment, and loan terms.

Loan Amortization Calculator

Generate detailed amortization schedules showing principal, interest, and remaining balance for any loan.

Math

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Percentage Calculator

Calculate percentages, percentage change, and percentage of a number.

Scientific Calculator

Full-featured scientific calculator with trigonometric, logarithmic, and exponential functions.

Quadratic Equation Solver

Solve quadratic equations using the quadratic formula with step-by-step solutions.

Right Triangle Calculator

Calculate sides, angles, area, and perimeter of a right triangle using the Pythagorean theorem.

GPA Calculator

Calculate Grade Point Average on a 4.0 scale with weighted and unweighted options.

Grade Calculator

Calculate final grades with weighted categories and what-if scenarios.

Volume Calculator

Calculate volume of 3D shapes including sphere, cylinder, cone, cube, and more.

Area Calculator

Calculate area of 2D shapes including circle, triangle, rectangle, trapezoid, and more.

Fraction Calculator

Add, subtract, multiply, and divide fractions with step-by-step simplification.

Matrix Calculator

Perform matrix operations: addition, multiplication, determinant, inverse, and eigenvalues.

Standard Deviation Calculator

Calculate standard deviation, variance, mean, and other descriptive statistics for a data set.

Probability Calculator

Calculate probability of events including combinations, permutations, and conditional probability.

Logarithm Calculator

Calculate logarithms with any base including common (log10), natural (ln), and binary (log2).

Exponent Calculator

Calculate powers and exponents including fractional, negative, and zero exponents.

Mean, Median & Mode Calculator

Calculate mean, median, mode, range, and other measures of central tendency.

Prime Number Calculator

Check if a number is prime, find prime factors, and generate lists of prime numbers.

Binary Calculator

Convert between binary, decimal, octal, and hexadecimal number systems with arithmetic operations.

Equation Solver

Solve linear, quadratic, and systems of equations with step-by-step solutions.

Science

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Ohm's Law Calculator

Calculate voltage, current, resistance, and power using Ohm's Law.

Kinetic Energy Calculator

Calculate kinetic energy of a moving object.

Ideal Gas Law Calculator

Calculate pressure, volume, temperature, or moles using PV=nRT.

Molarity Calculator

Calculate solution molarity, moles of solute, or volume.

Half-Life Calculator

Calculate radioactive decay, remaining quantity, or elapsed time.

Density Calculator

Calculate density, mass, or volume from any two known values.

Free Fall Calculator

Calculate free fall distance, time, and velocity under gravity.

Specific Heat Calculator

Calculate heat energy, temperature change, or specific heat capacity.

Wavelength-Frequency Calculator

Convert between wavelength, frequency, and energy of electromagnetic waves.

Projectile Motion Calculator

Calculate range, max height, and flight time of projectile motion.

Mechanical Advantage Calculator

Calculate mechanical advantage of simple machines (levers, pulleys, inclined planes).

Molar Mass Calculator

Calculate molar mass of chemical compounds from their formula.

Engineering

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Beam Deflection Calculator

Calculate beam deflection, bending moment, and shear force for various load conditions.

Voltage Divider Calculator

Calculate output voltage of a resistive voltage divider circuit.

Concrete Calculator

Calculate concrete volume, mix ratios, and material quantities for construction projects.

Pressure Vessel Calculator

Calculate wall thickness, hoop stress, and safety factors for cylindrical pressure vessels.

Heat Transfer Calculator

Calculate heat transfer rate via conduction, convection, and radiation.

Pipe Flow Calculator

Calculate flow rate, velocity, pressure drop, and Reynolds number for pipe flow.

Torque Calculator

Calculate torque, force, or distance in rotational systems.

Gear Ratio Calculator

Calculate gear ratios, output speed, and torque for gear trains.

Stress-Strain Calculator

Calculate stress, strain, and Young's modulus for materials under load.

Hydraulic Cylinder Calculator

Calculate hydraulic cylinder force, pressure, and flow requirements.

Motor Sizing Calculator

Calculate motor power, torque, and speed requirements for applications.

Paint Estimator

Estimate paint quantity needed based on surface area, coverage rate, and coats.

Construction

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Concrete Quantity Calculator

Calculate concrete volume and material quantities for footings, slabs, columns, and beams.

Steel Reinforcement Calculator

Calculate steel rebar quantity, weight, and spacing for reinforced concrete.

Beam Load Calculator

Calculate safe load capacity and reinforcement for RCC beams.

Brick & Block Calculator

Calculate number of bricks or blocks needed for walls.

Paint Coverage Calculator

Calculate paint quantity for construction surfaces with window/door deductions.

Column Load Estimator

Estimate axial load capacity of RCC columns.

Foundation Size Estimator

Calculate foundation dimensions based on load and soil bearing capacity.

Retaining Wall Calculator

Design retaining walls for stability against sliding and overturning.

Mortar Quantity Calculator

Calculate mortar volume and material quantities for masonry work.

Plaster Quantity Calculator

Calculate cement and sand quantities for plastering walls and ceilings.

Tile Quantity Calculator

Calculate number of tiles needed with waste factor.

Drywall Calculator

Calculate drywall sheets, screws, and joint compound for walls and ceilings.

Excavation Volume Calculator

Calculate cut and fill volumes for earthwork projects.

Backfilling Calculator

Calculate backfill material volume accounting for compaction.

Compaction Volume Estimator

Estimate compacted volume from loose soil quantities.

Soil Bearing Capacity Calculator

Calculate safe bearing capacity of soil for foundation design.

Road Pavement Calculator

Calculate pavement layer thicknesses using CBR method.

Warehouse Floor Load Calculator

Calculate floor load capacity and slab thickness for warehouse floors.

Scaffold Quantity Calculator

Calculate scaffold material quantities for construction access.

Formwork Area Calculator

Calculate formwork surface area for concrete structural members.

Precast Volume Calculator

Calculate volume and weight of precast concrete elements.

Staircase Calculator

Design staircases with proper riser/tread dimensions and concrete volume.

RCC Beam Design Calculator

Design reinforced concrete beams with moment capacity and shear check.

Logistics

View all Logistics →

CBM Calculator

Calculate cubic meter volume for shipping and freight.

Container Load Calculator

Calculate how many items fit in a shipping container.

Freight Cost Estimator

Estimate freight shipping costs based on weight, volume, and distance.

Weight Calculator

Convert between weight units (kg, lbs, oz, g, tons).

CM to Feet Converter

Convert centimeters to feet and inches and vice versa.

Data Size Converter

Convert between data storage units (bytes, KB, MB, GB, TB).

Packing List Generator

Generate packing lists for shipments with item categorization.

Tools

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