Free Online Calculators & Tools
Discover 300+ free calculators for math, finance, science, health, and everyday conversions. AkCalculators makes problem-solving simple, fast, and reliable.
Math Tools
Percentage Calculator Scientific Calculator Fraction Calculator Algebra Solver Quadratic Equation Solver Matrix Calculator Determinant Calculator Linear Equation Solver Prime Number Checker GCD Calculator LCM Calculator Factorial Calculator Permutation & Combination Probability Calculator Statistics Calculator Mean Median Mode Calculator Standard Deviation Calculator Variance Calculator Percentile Calculator Ratio-Proportion Calculator Complex Number Calculator Polynomial Calculator Equation System Solver Logarithm Calculator Exponent Calculator Modular Arithmetic Calculator Number Base Converter Sequence & Series Calculator Binomial Calculator Trigonometry Calculator Sine Cosine Tan Calculator Unit Circle Calculator Angle Converter Right Triangle Solver Pythagorean Calculator Geometry Calculator Area & Perimeter Calculator Volume Calculator Coordinate Geometry Calculator Slope-Intercept Calculator Interpolation Calculator Regression Calculator Correlation Calculator Matrix Inverse Calculator Eigenvalue Calculator Eigenvector Calculator Linear Algebra Helper Derivative Calculator Integral Calculator Limits Calculator Taylor Series Calculator Numeric Solver Approximation Calculator Root Finder Graph Plotter Arithmetic Sequence Calculator Geometric Sequence Calculator Complex Roots Calculator Continued Fraction Calculator Logistic Map Calculator
Financial Tools
Loan Calculator Mortgage Calculator Compound Interest Calculator Simple Interest Calculator Investment Return Calculator Currency Converter Inflation Calculator Savings Goal Calculator Retirement Calculator Tax Estimator EMI Calculator Credit Card Payoff Calculator Net Present Value (NPV) Calculator Internal Rate of Return (IRR) Calculator Payback Period Calculator Depreciation Calculator Salary Calculator Take Home Pay Calculator Budget Planner Break-Even Calculator Profit Margin Calculator ROI Calculator Stock Return Calculator Bond Yield Calculator Annuity Calculator Dividend Yield Calculator Capital Gains Calculator Expense Splitter Currency Rate Tracker Business Loan Calculator Small Business Profit Calculator Startup Valuation Loan Comparison Calculator EMI vs Lump Sum Calculator Mortgage Amortization Schedule SIP Calculator Lump Sum Investment Calculator 403b/401k Projection Inheritance Tax Calculator Salary Raise Calculator Hourly to Salary Converter Compound Frequency Calculator Interest Rate Converter Payment Frequency Calculator Foreign Exchange Fee Estimator Wealth Growth Calculator Expense to Income Ratio Calculator Capitalization Rate Calculator Gross vs Net Income Calculator Payroll Tax Estimator Real Return Calculator Bond Duration Calculator Currency Conversion Fee Calculator Home Affordability Calculator Student Loan Repayment Calculator Mortgage Refinance Calculator Brokerage Fee Calculator Expense Forecast Calculator Financial Ratios Calculator Cost of Living Adjuster
Health Tools
BMI Calculator Calorie Calculator Body Fat Calculator BMR Calculator Daily Water Intake Calculator Ideal Weight Calculator Pregnancy Due Date Calculator Ovulation Calculator Heart Rate Zone Calculator Target Heart Rate Calculator Basal Metabolic Rate Calculator Macro Nutrient Calculator Protein Intake Calculator Calorie Deficit Calculator Calorie Surplus Calculator WHR (Waist-Hip Ratio) Calculator Blood Alcohol Content (BAC) Estimator Body Surface Area Calculator Child Growth Percentile Dosage Calculator BMI Percentile Calculator Sleep Cycle Calculator Hydration Calculator WHtR (Waist-to-Height) Calculator Body Mass Index Category Checker Metabolic Age Calculator Calorie Burn Calculator Steps to Calories Converter Vo2 Max Estimator Target Weight Loss Time Estimator Ketone Calculator Cholesterol Ratio Calculator BMI Ideal Weight Range Pregnancy Trimester Calculator Fertility Window Calculator Gestational Age Calculator Pediatric Dosage Calculator Medication Timing Helper Blood Pressure Category Checker Calorie from Macros Calculator Heart Disease Risk Estimator Smoking Cost Calculator Alcohol Unit Calculator Skinfold Body Fat Estimator Waist-to-Hip Calculator Calorie Per Serving Estimator BMI to BMR Quick Converter Basal Energy Expenditure Calculator Hydration Needs - Activity Adjusted Pregnancy Weight Gain Calculator Infant Age Calculator Menstrual Cycle Tracker Recovery Time Estimator Exercise Calorie Calculator Body Frame Size Calculator Macro Split Advisor Glucose Level Estimator Lean Body Mass (LBM) Calculator Resting Metabolic Rate (RMR) Calculator TDEE Calculator
Conversion Tools
Length Converter Weight Converter Area Converter Volume Converter Speed Converter Temperature Converter Time Converter Power Converter Energy Converter Data Storage Converter Pressure Converter Angle Converter Fuel Consumption Converter Cooking Measurement Converter Torque Converter Density Converter Illumination Converter Sound Level Converter Magnetic Field Converter Radiation Unit Converter Frequency Converter Force Converter Flow Rate Converter Viscosity Converter Conductivity Converter pH Scale Converter Currency Converter (live placeholder) Byte Rate Converter Bitrate to Mbps Converter Horsepower Converter Calorie to Joules Converter Nautical Units Converter Clothing Size Converter Shoe Size Converter Paper Size Converter Temperature Comfort Index Converter Data Transfer Time Estimator Angular Velocity Converter Lumens to Lux Converter Wavelength to Frequency Converter Decibel Converter SI Prefix Converter Hex to RGB Converter RGB to HSL Converter Color Unit Converter Resistance Unit Converter Capacitance Converter Inductance Converter Pressure to Depth Converter Bytes to Human-Readable Converter Timezone Converter Unix Timestamp Converter Gregorian to Julian Date Converter Week Number Converter Battery Capacity Converter Electric Charge Converter Radiation Dose Converter Pixel Density Converter Aspect Ratio Converter Data Rate to Time Converter
Science Tools
Molar Mass Calculator Atomic Weight Calculator pH Calculator Ohm's Law Calculator Resistance Calculator Current Calculator Voltage Calculator Power Calculator Kinetic Energy Calculator Potential Energy Calculator Force Calculator Work Calculator Acceleration Calculator Velocity Calculator Momentum Calculator Gravitational Force Calculator Orbital Period Calculator Escape Velocity Calculator Half-Life Calculator Radioactive Decay Calculator Fluid Density Calculator Buoyancy Calculator Ideal Gas Law Calculator Stoichiometry Calculator Reaction Yield Calculator Concentration Calculator Molarity Calculator Molality Calculator Entropy Change Calculator Thermodynamics State Calculator Refractive Index Calculator Lens Maker Calculator Optics Focal Length Calculator Wave Speed Calculator Frequency Calculator Wavelength Calculator Planck Energy Calculator Blackbody Peak Wavelength DNA Base Pair Calculator pH Titration Calculator Diffusion Rate Estimator Specific Heat Capacity Calculator Calorimetry Calculator Gas Law Converter Electrochemistry Calculator pOH Calculator Conductance Calculator Magnetic Force Calculator Centripetal Force Calculator Rotational Kinetics Calculator Torque Calculator Stress-Strain Calculator Young's Modulus Calculator Seismic Energy Calculator Optical Resolution Calculator Quantum Energy Level Calculator Thermal Expansion CalculatorCapacitance Calculator Surface Tension Calculator Thermodynamic Efficiency Calculator
Everyday Tools
Age Calculator Date Difference Calculator Countdown Timer Stopwatch Tip Calculator GPA Calculator Random Number Generator Password Generator Unit Price Calculator Time Zone Converter Lite Event Date Reminder Shopping List Cost Estimator Bill Splitter Loan Split Calculator Grocery Unit Converter Recipe Serving Adjuster Habit Tracker Periodic Reminder Generator To-Do Time Estimator Calendar Week Finder Work Hours Calculator Commute Time Estimator Fuel Cost Estimator Birthday Countdown Age in Months/Days Calculator Sibling Age Difference Calculator (fun) Baby Due Date Helper Parking Fee Estimator Holiday Countdown Battery Life Estimator Movie Runtime Calculator (fun) Brightness to Lux Estimator Timezone Meeting Planner Phone Plan Data Usage Estimator Resume Word Counter Character Counter Reading Time Estimator QR Code Generator Color Contrast Checker Packing List Time Estimator Weekly Schedule Builder BMI Quick Link Dishwasher Cycle Time Estimator Energy Savings Estimator Stairs to Calories Converter Water Bill Splitter Monthly Subscription Tracker Habit Streak Calculator Step Goal Planner Donation Impact Calculator Referral Commission Calculator Language Practice Timer Currency Rounding Helper Digital Productivity Efficiency Calculator Carbon Footprint Estimator Data Storage Converter Weekly Planner Time Allocator Screen Time to Sleep Ratio Calculator Expense Split Percentage Calculator Time Duration Converter