All Calculators219+ Tools
The complete directory of free online tools. Accurate, fast, and accessible from any device.
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Mortgage Payment
Financial • Mortgages
Amortization Schedule
Financial • Mortgages
Mortgage Payoff
Financial • Mortgages
House Affordability
Financial • Mortgages
Rent vs Buy
Financial • Mortgages
Refinance Calculator
Financial • Mortgages
Rental Property
Financial • Mortgages
APR Calculator
Financial • Mortgages
FHA Loan
Financial • Mortgages
VA Mortgage
Financial • Mortgages
Home Equity
Financial • Mortgages
HELOC Calculator
Financial • Mortgages
Down Payment
Financial • Mortgages
Bi-weekly Mortgage
Financial • Mortgages
Personal Loan
Financial • Loans
Auto Loan
Financial • Loans
Student Loan
Financial • Loans
Loan Payoff
Financial • Loans
Debt-to-Income Ratio
Financial • Loans
Payday Loan
Financial • Loans
Business Loan
Financial • Loans
Consolidation Loan
Financial • Loans
Balloon Loan
Financial • Loans
Interest-Only Loan
Financial • Loans
Credit Card Payoff
Financial • Loans
Lease vs Buy
Financial • Loans
EMI Calculator
Financial • Loans
Compound Interest
Financial • Investment
Investment Calculator
Financial • Investment
ROI Calculator
Financial • Investment
401k Calculator
Financial • Investment
Retirement Planner
Financial • Investment
Social Security
Financial • Investment
Annuity Payout
Financial • Investment
Roth IRA
Financial • Investment
Dividend Reinvestment
Financial • Investment
Stock Profit
Financial • Investment
Mutual Fund Fee
Financial • Investment
Options Profit
Financial • Investment
Crypto Profit
Financial • Investment
Staking Rewards
Financial • Investment
Mining Profitability
Financial • Investment
Retirement Age
Financial • Retirement & Savings
Savings Goal
Financial • Retirement & Savings
Emergency Fund
Financial • Retirement & Savings
CD Calculator
Financial • Retirement & Savings
Millionaire Calculator
Financial • Retirement & Savings
Coffee Savings
Financial • Retirement & Savings
Budget Planner
Financial • Retirement & Savings
Wealth Growth
Financial • Retirement & Savings
Asset Allocation
Financial • Retirement & Savings
Income Tax
Financial • Tax & Payroll
Sales Tax
Financial • Tax & Payroll
VAT Calculator
Financial • Tax & Payroll
GST Calculator
Financial • Tax & Payroll
Capital Gains Tax
Financial • Tax & Payroll
Self-Employment Tax
Financial • Tax & Payroll
Take-Home Pay
Financial • Tax & Payroll
Salary to Hourly
Financial • Tax & Payroll
Estate Tax
Financial • Tax & Payroll
1099 Tax
Financial • Tax & Payroll
Bonus Tax
Financial • Tax & Payroll
Corporate Tax
Financial • Tax & Payroll
BMI Calculator
Health & Fitness • Body Composition
Body Fat %
Health & Fitness • Body Composition
BMR Calculator
Health & Fitness • Body Composition
Ideal Weight
Health & Fitness • Body Composition
Lean Body Mass
Health & Fitness • Body Composition
Frame Size
Health & Fitness • Body Composition
Body Surface Area
Health & Fitness • Body Composition
Waist-to-Hip Ratio
Health & Fitness • Body Composition
Adjusted Body Weight
Health & Fitness • Body Composition
Ponderal Index
Health & Fitness • Body Composition
TDEE Calculator
Health & Fitness • Calories & Macros
Calorie Burned
Health & Fitness • Calories & Macros
Macro Calculator
Health & Fitness • Calories & Macros
Protein Intake
Health & Fitness • Calories & Macros
Carbohydrate Intake
Health & Fitness • Calories & Macros
Fat Intake
Health & Fitness • Calories & Macros
Water Intake
Health & Fitness • Calories & Macros
Caffeine Calculator
Health & Fitness • Calories & Macros
Keto Calculator
Health & Fitness • Calories & Macros
Weight Loss Forecast
Health & Fitness • Calories & Macros
Pace Calculator
Health & Fitness • Fitness Performance
One Rep Max (1RM)
Health & Fitness • Fitness Performance
Target Heart Rate
Health & Fitness • Fitness Performance
VO2 Max Estimate
Health & Fitness • Fitness Performance
Wilks Coefficient
Health & Fitness • Fitness Performance
Army Body Fat
Health & Fitness • Fitness Performance
Navy Fitness
Health & Fitness • Fitness Performance
Cooper Test
Health & Fitness • Fitness Performance
Race Time Predictor
Health & Fitness • Fitness Performance
Pregnancy Due Date
Health & Fitness • Medical & Lifestyle
Ovulation Calculator
Health & Fitness • Medical & Lifestyle
Period Tracker
Health & Fitness • Medical & Lifestyle
BAC Calculator
Health & Fitness • Medical & Lifestyle
Smoking Cost
Health & Fitness • Medical & Lifestyle
Life Expectancy
Health & Fitness • Medical & Lifestyle
Blood Pressure Category
Health & Fitness • Medical & Lifestyle
Heart Attack Risk
Health & Fitness • Medical & Lifestyle
Sleep Calculator
Health & Fitness • Medical & Lifestyle
Vision Health Tracker
Health & Fitness • Medical & Lifestyle
Percentage
Mathematics • General Algebra
Percentage Change
Mathematics • General Algebra
Fraction Calculator
Mathematics • General Algebra
Scientific Calculator
Mathematics • General Algebra
Square Root
Mathematics • General Algebra
Logarithm
Mathematics • General Algebra
Factorial
Mathematics • General Algebra
Prime Number
Mathematics • General Algebra
GCD & LCM
Mathematics • General Algebra
Binary to Decimal
Mathematics • General Algebra
Decimal to Fraction
Mathematics • General Algebra
Rounding Calculator
Mathematics • General Algebra
Circle Area
Mathematics • Geometry (2D)
Triangle Area
Mathematics • Geometry (2D)
Square Area
Mathematics • Geometry (2D)
Rectangle Area
Mathematics • Geometry (2D)
Polygon Area
Mathematics • Geometry (2D)
Circumference
Mathematics • Geometry (2D)
Perimeter
Mathematics • Geometry (2D)
Arc Length
Mathematics • Geometry (2D)
Sector Area
Mathematics • Geometry (2D)
Sphere Volume
Mathematics • Geometry (3D)
Cylinder Volume
Mathematics • Geometry (3D)
Cone Volume
Mathematics • Geometry (3D)
Cube Volume
Mathematics • Geometry (3D)
Pyramid Volume
Mathematics • Geometry (3D)
Tank Volume
Mathematics • Geometry (3D)
Surface Area
Mathematics • Geometry (3D)
Mean/Median/Mode
Mathematics • Statistics
Standard Deviation
Mathematics • Statistics
Variance
Mathematics • Statistics
Probability
Mathematics • Statistics
Permutation
Mathematics • Statistics
Combination
Mathematics • Statistics
Z-Score
Mathematics • Statistics
Confidence Interval
Mathematics • Statistics
Chi-Square
Mathematics • Statistics
Weighted Average
Mathematics • Statistics
Profit Margin
Business • Profit & Sales
Markup
Business • Profit & Sales
Break-Even Point
Business • Profit & Sales
Discount
Business • Profit & Sales
Revenue Per Employee
Business • Profit & Sales
Customer Lifetime Value
Business • Profit & Sales
Inventory Turnover
Business • Profit & Sales
Cost of Goods Sold
Business • Profit & Sales
Retention Rate
Business • Profit & Sales
CPC Calculator
Business • Marketing
CTR Calculator
Business • Marketing
CPM Calculator
Business • Marketing
ROAS Calculator
Business • Marketing
CPA Calculator
Business • Marketing
Conversion Rate
Business • Marketing
Email ROI
Business • Marketing
A/B Test Significance
Business • Marketing
Market Share
Business • Marketing
Instagram Engagement
Business • Influencer & Social
YouTube Money
Business • Influencer & Social
TikTok Growth
Business • Influencer & Social
Twitter Audit
Business • Influencer & Social
Follower Ratio
Business • Influencer & Social
Brand Deal Estimator
Business • Influencer & Social
Ohm's Law
Physics & Engineering • Electrical
Voltage Drop
Physics & Engineering • Electrical
Resistor Color
Physics & Engineering • Electrical
Battery Life
Physics & Engineering • Electrical
Power (Watts)
Physics & Engineering • Electrical
Wire Size
Physics & Engineering • Electrical
Capacitor Energy
Physics & Engineering • Electrical
Inductor Color
Physics & Engineering • Electrical
Concrete Volume
Physics & Engineering • Construction
Brick Calculator
Physics & Engineering • Construction
Stair Stringer
Physics & Engineering • Construction
Lumber/Board Foot
Physics & Engineering • Construction
Roofing Square
Physics & Engineering • Construction
Drywall
Physics & Engineering • Construction
Paint Coverage
Physics & Engineering • Construction
Mulch/Soil
Physics & Engineering • Construction
Fencing Calculator
Physics & Engineering • Construction
Force (F=ma)
Physics & Engineering • General Physics
Kinetic Energy
Physics & Engineering • General Physics
Potential Energy
Physics & Engineering • General Physics
Projectile Motion
Physics & Engineering • General Physics
Density
Physics & Engineering • General Physics
Torque
Physics & Engineering • General Physics
Pressure
Physics & Engineering • General Physics
Speed/Velocity
Physics & Engineering • General Physics
Acceleration
Physics & Engineering • General Physics
Work/Power
Physics & Engineering • General Physics
Length (Metric/Imp)
Unit Converters • Physical Units
Area (Acre/Sqm)
Unit Converters • Physical Units
Weight (Kg/Lb)
Unit Converters • Physical Units
Volume (Liter/Gal)
Unit Converters • Physical Units
Temperature (C/F)
Unit Converters • Physical Units
Pressure Units
Unit Converters • Physical Units
Speed Units
Unit Converters • Physical Units
Energy Units
Unit Converters • Physical Units
Storage (MB/GB/TB)
Unit Converters • Tech Units
Bandwidth (Mbps)
Unit Converters • Tech Units
Screen Resolution
Unit Converters • Tech Units
Pixel to EM
Unit Converters • Tech Units
RGB to HEX
Unit Converters • Tech Units
Decimal to Binary
Unit Converters • Tech Units
Age Calculator
Everyday Life • Time & Date
Days Until
Everyday Life • Time & Date
Time Duration
Everyday Life • Time & Date
Time Zone
Everyday Life • Time & Date
Work Days
Everyday Life • Time & Date
Retirement Countdown
Everyday Life • Time & Date
Military Time
Everyday Life • Time & Date
Tip Calculator
Everyday Life • Food & Travel
Gas Cost
Everyday Life • Food & Travel
Gas Mileage
Everyday Life • Food & Travel
Cooking Conversion
Everyday Life • Food & Travel
Recipe Scaler
Everyday Life • Food & Travel
Dog/Cat Age
Everyday Life • Food & Travel
Plant Spacing
Everyday Life • Food & Travel