Free Online Calculator Tools

461+ powerful calculators for math, science, finance & more — all free, no sign-up.

Basic Math

18 tools

Basic Calculator

Long Division Calculator

Average Calculator

Rounding Calculator

Root Calculator

Factor Calculator

Greatest Common Factor Calculator

Least Common Multiple Calculator

Prime Factorization Calculator

Common Factor Calculator

Big Number Calculator

Grade Calculator

GPA Calculator

Conversion Calculator

Four-Function Calculator

Graphing Calculator

Programmable Calculator

Engineering Calculator

Algebra

28 tools

Scientific Calculator

Fraction Calculator

Percentage Calculator

Exponent Calculator

Quadratic Formula Calculator

Ratio Calculator

Scientific Notation Calculator

Matrix Calculator

Number Sequence Calculator

Algebra Calculator

Proportion Calculator

Linear Equation Calculator

Polynomial Calculator

Inequality Calculator

Factorial Calculator

Series Calculator

Acceleration calculator

Algebra calculator

Aspect Ratio calculator

Cube Root calculator

Determinant calculator

Exponential calculator

Income Ratio calculator

Loss Percentage calculator

Percentage Decrease calculator

Percentage Increase calculator

Quadratic Equation calculator

Square Root calculator

Geometry

26 tools

Triangle Calculator

Area Calculator

Volume Calculator

Circle Calculator

Surface Area Calculator

Pythagorean Theorem Calculator

Right Triangle Calculator

Distance Calculator

Slope Calculator

Geometry Calculator

Graph Plotter

Coordinate Geometry Calculator

Midpoint Calculator

Angle Calculator

Vector Calculator

Area calculator

Circle Area calculator

Circle Circumference calculator

Cone Volume calculator

Cylinder Volume calculator

Distance Formula calculator

Land Area calculator

Pythagorean calculator

Rectangle Area calculator

Sphere Volume calculator

Triangle Area calculator

Trigonometry

8 tools

Trigonometry Calculator

Angle calculator

Business Days calculator

Cos calculator

Hyperbolic calculator

Resistance calculator

Sin calculator

Tan calculator

Calculus

2 tools

Calculus Calculator

Limit calculator

Statistics

17 tools

Standard Deviation Calculator

Sample Size Calculator

Probability Calculator

Statistics Calculator

Mean, Median, Mode, Range

Permutation & Combination Calculator

Z-score Calculator

Confidence Interval Calculator

P-value Calculator

Median Calculator

Mode Calculator

Range Calculator

Variance Calculator

Correlation calculator

Covariance calculator

Mean calculator

Regression calculator

Number Systems

6 tools

Binary Calculator

Hex Calculator

Random Number Generator

Percent Error Calculator

Roman Numeral Converter

Octal Calculator

Science

48 tools

Half-Life Calculator

Log Calculator

AP Chemistry Score Calculator

Molarity Calculator

Wind Chill Calculator

Dew Point Calculator

Molecular Weight Calculator

Heat Index Calculator

Ohms Law Calculator

Electricity Calculator

Density Calculator

Mass Calculator

Weight Calculator

Voltage Drop Calculator

Force Calculator

Work Calculator

Torque Calculator

Frequency Calculator

Avogadro calculator

Boyle Law calculator

Charles Law calculator

Chemical Equation calculator

Chemistry calculator

Current calculator

Density Chemistry calculator

Electrical Power calculator

Energy calculator

Energy Work calculator

Force Mass calculator

Gas Law calculator

Gravity calculator

Ideal Gas calculator

Kinetic Energy calculator

Light Speed calculator

Momentum calculator

Physics calculator

Pixel Density calculator

Potential Energy calculator

Power calculator

Power Output calculator

Reaction Rate calculator

Specific Heat calculator

Thermal Energy calculator

Velocity calculator

Voltage calculator

Wavelength calculator

Work Done calculator

Work Hours calculator

Fitness & Health

26 tools

BMI Calculator

Age Calculator

Calorie Calculator

Body Fat Calculator

BMR Calculator

Macro Calculator

Ideal Weight Calculator

Lean Body Mass Calculator

Healthy Weight Calculator

Calories Burned Calculator

One Rep Max Calculator

Target Heart Rate Calculator

Protein Calculator

Fat Intake Calculator

TDEE Calculator

Carbohydrate Calculator

Pace Calculator

Army Body Fat Calculator

Weight Watcher Points Calculator

Overweight Calculator

Height Calculator

Sleep Calculator

Golf Handicap Calculator

Water Intake Calculator

Diabetes Risk Calculator

Steel Weight calculator

Pregnancy

8 tools

Pregnancy Calculator

Due Date Calculator

Pregnancy Weight Gain Calculator

Pregnancy Conception Calculator

Ovulation Calculator

Conception Calculator

Period Calculator

Birthday calculator

Medical Tools

9 tools

GFR Calculator

Body Type Calculator

Body Surface Area Calculator

BAC Calculator

Anorexic BMI Calculator

Dilution calculator

Ph calculator

Solution calculator

Titration calculator

Finance

119 tools

Discount Calculator

Sales Tax Calculator

Tip & Bill Splitter

Interest Calculator

Loan Calculator

Mortgage Amortization Calculator

Canadian Mortgage Calculator

Rent vs. Buy Calculator

Payback Period Calculator

Present Value Calculator

Future Value Calculator

Commission Calculator

Mortgage Calculator UK

Debt-to-Income Ratio Calculator

Take-Home Paycheck Calculator

Boat Loan Calculator

Refinance Calculator

Rental Property Calculator

ROI Calculator

FHA Loan Calculator

Home Equity Loan Calculator

Down Payment Calculator

Margin Calculator

Business Loan Calculator

Real Estate Calculator

Personal Loan Calculator

Lease Calculator

Budget Calculator

IRR Calculator

APR Calculator

VA Mortgage Calculator

HELOC Calculator

Credit Card Calculator

Debt Payoff Calculator

Repayment Calculator

College Cost Calculator

CD Calculator

Mutual Fund Calculator

VAT Calculator

Auto Lease Calculator

Average Return Calculator

Payment Calculator

Retirement Calculator

Investment Calculator

Currency Calculator

Inflation Calculator

Finance Calculator

Mortgage Payoff Calculator

Income Tax Calculator

Compound Interest Calculator

Salary Calculator

401K Calculator

House Affordability Calculator

Savings Calculator

Rent Calculator

Marriage Tax Calculator

Estate Tax Calculator

Pension Calculator

Social Security Calculator

Annuity Calculator

Annuity Payout Calculator

Debt Consolidation Calculator

Student Loan Calculator

Simple Interest Calculator

Bond Calculator

Roth IRA Calculator

RMD Calculator

Cash Back or Low Interest Calculator

Percent Off Calculator

GDP Calculator

Auto Loan Calculator

Car Depreciation Calculator

EMI Calculator

NPV Calculator

Tax Calculator

GST Calculator

Profit Calculator

Profit Margin Calculator

Gross Profit Calculator

Net Profit Calculator

Break-Even Calculator

Markup Calculator

Net Worth Calculator

Apy calculator

Break Even Point calculator

Budget Planner calculator

Car Loan calculator

Cash Flow calculator

Construction Cost calculator

Cost calculator

Debt Ratio calculator

Derivative calculator

Dividend calculator

Expense calculator

Expense Tracker calculator

Forecast calculator

Gold Price calculator

Loan Eligibility calculator

Loan Interest calculator

Mortgage calculator

Portfolio calculator

Portfolio Return calculator

Pricing calculator

Profit Percentage calculator

Property Tax calculator

Revenue calculator

Roi Growth calculator

Roi Percentage calculator

Salary Increment calculator

Salary Tax calculator

Savings Goal calculator

Savings Interest calculator

Sharpe Ratio calculator

Shipping Cost calculator

Silver Price calculator

Stock Average calculator

Stock Profit calculator

Tax Bracket calculator

Tax Refund calculator

Conversion

15 tools

Length Converter

Weight Converter

Volume Converter

Area Converter

Temperature Converter

Smart Conversion Assistant

Speed Converter

Time Converter

Energy Converter

Power Converter

Pressure Converter

Data Storage Converter

Fuel Efficiency Converter

Unit Converter

Unit Price calculator

Construction

14 tools

Roofing Calculator

Mulch Calculator

Concrete Calculator

BTU Calculator

Tile Calculator

Gravel Calculator

Stair Calculator

Square Footage Calculator

Paint Calculator

Flooring Calculator

Material Estimator

Beam Load Calculator

Structural Load Calculator

Brick calculator

Tech & Dev

18 tools

Base64 Encode / Decode

Bandwidth Calculator

URL Encode / Decode

Resistor Calculator

Password Generator

Network Calculator

Download Time Calculator

Upload Speed Calculator

Algorithm Complexity Calculator

Hash Calculator

Bitcoin calculator

Bitrate calculator

Crypto calculator

Data Usage calculator

Ethereum calculator

Frame Rate calculator

Sip calculator

Upload Time calculator

Time & Date

15 tools

Time Duration Calculator

Day of the Week Calculator

Day Counter

Date Calculator

Hours Calculator

Time Card Calculator

Time Calculator

Time Zone Calculator

Days Between Dates

Leap Year Calculator

Minutes Calculator

Countdown Calculator

Overtime calculator

Stopwatch calculator

World Clock calculator

Automotive

13 tools

Speed Calculator

Tire Size Calculator

Gas Mileage Calculator

Horsepower Calculator

Engine Horsepower Calculator

Mileage Calculator

Fuel Cost (Simple)

Travel Time Calculator

Distance Travel Calculator

Fuel Consumption Calculator

Flight Time Calculator

Running Speed Calculator

Driving Distance Calculator

Business

9 tools

Commission Split Calculator

Conversion Rate Calculator

CTR Calculator

CPC Calculator

CPM Calculator

Customer Lifetime Value Calculator

Churn Rate Calculator

Lead Conversion Calculator

Break-Even Sales Calculator

Education

5 tools

CGPA Calculator

Marks Percentage Calculator

Attendance Calculator

Study Time Calculator

Ranking Calculator

Advanced

42 tools

Bayesian Calculator

Monte Carlo Calculator

Signal Processing Calculator

Fourier Transform Calculator

Cryptography Calculator

Blockchain Gas Fee Calculator

Mining Profit Calculator

AI Model Cost Calculator

Carbon Footprint Calculator

Solar Panel Calculator

Age calculator

Age Difference calculator

Alpha calculator

Audio calculator

Beta calculator

Bonus calculator

Cement calculator

Compound Growth calculator

Credit Score calculator

Deposit calculator

Discount Price calculator

Discount Rate calculator

Efficiency calculator

Emi Affordability calculator

Equation Solver

Forex calculator

Heat calculator

Hourly Rate calculator

House Price calculator

Loss calculator

Packaging calculator

Payroll calculator

Pressure calculator

Radioactive Decay calculator

Rent Affordability calculator

Risk calculator

Screen Size calculator

Simple calculator

Temperature Change calculator

Wage calculator

Withdrawal calculator

Yield calculator

Fun & Games

4 tools

Love Calculator

Dice Roller

Coin Flipper

Dog Age Calculator

Lifestyle

11 tools

Shoe Size Conversion

Bra Size Finder

Clothing Size Calculator

Wedding Drink Calculator

Water Bill Calculator

Split Bill Calculator

Electricity Bill Calculator

Gas Bill Calculator

Bra Size Calculator

Clothing Size Calculator

Wedding Drink Calculator

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