Free Online Calculators & Scientific Calculator
- Acid Test Ratio (Quick Ratio or Liquid Ratio)
- Business Loan Payment Calculator
- Correct Change Calculator
- Depreciation: Constant Percent Change (Exponential)
- Depreciation: Double Declining Balance
- Depreciation: Straight Line
- Depreciation: Sum-of-Years
- Difference Between Price Markup and Gross Profit Margin
- Dime Sale Revenue Calculator
- Dime Sale Strategy Calculator
- Economic Order Quantity (EOQ)
- Geometric Mean Return
- Inventory Ordering/Carrying Costs
- Income Elasticity of Demand
- Marginal Cost
- Meeting Cost Calculator
- Percent Change Formula
- Time Card Calculator
- Website Valuation Calculator
- Annuity Payments to Lump Sum and Vice Versa
- Black-Scholes
- Future Value of Annuity
- Future Value Growing Annuity
- Moving Average: Cumulative
- Moving Average: Cum. Wei.
- Moving Average: Exponential
- Moving Average: Geom. & Harm.
- Moving Average: Median
- Moving Average: Simple
- Moving Average: Weighted
- Net Present Value NPV, Internal Rate of Return IRR
- Present Value of Annuity/Perpetuity
- Present Value Growing Annuity
- Retirement Savings Calculator
- Savings Account Calculator
- Scrap Gold Calculator
- Stochastic Oscillator Calculator
- Portfolio Expected Return Calculator
- Volatility: Historical
- Volatility: Implied
- Yield to Maturity YTM
- Geometric Mean Return
- Margin of Error
- Moving Average: Cumulative
- Moving Average: Cum. Wei.
- Moving Average: Exponential
- Moving Average: Geom. & Harm.
- Moving Average: Median
- Moving Average: Simple
- Moving Average: Weighted
- Normal Distribution Probabilities
- Percent Change Formula
- Percentages for a Pie Chart
- PERT Estimation
- Pie Chart Angles
- Required Sample Size
- Total Percent Change
- Variance and Standard Deviation Calculator
- 4-Variable Mortgage Calculator
- Amortization Schedule (On-Screen)
- Amortization Schedule (Printable)
- APR from Annual Interest Rate
- APY, aka Effective Annual Rate
- Balance Paid/Still Owed: When?
- Balloon Mortgage Amortization
- Balloon Mortgage Calculator
- Biweekly Mortgage Payments
- Biweekly Mortgage vs. Monthly Mortgage
- Canadian Mortgage Amortization
- Canadian Mortgage Calculator
- Graduated Payment Mortgage
- How Long to Pay Off a Loan
- How Much You Can Afford to Borrow
- Loan Comparison Calculator
- Loan Period Length (Bounded Interest)
- Maximum Interest Rate You Can Afford
- Monthly Auto Loan Payments
- Monthly Payment Calculator
- Monthly to Biweekly Conversion
- Refinancing Savings Calculator
- Remaining Balance on a Home Mortgage
- Student Loan Payment Calculator
- Annuity Payments to Lump Sum and Vice Versa
- Down Payment Calculator
- Down Payment Comparison
- Future Value of Annuity
- Future Value Growing Annuity
- Loan Comparison Calculator
- Million Dollar Savings
- Monthly Auto Loan Payments
- Monthly Payment Calculator
- Paying Off Credit Card Balance with Minimum Monthly Payment
- Present Value of Annuity/Perpetuity
- Present Value Growing Annuity
- Retirement Savings Calculator
- Savings Account Calculator
- Sales Tax
- Savings Goal Calculator
- Student Loan Payment Calculator
- Time Card Calculator
- Website Valuation Calculator
Mathematics
- Absolute Value Inequalities
- abx = cx + d
- Arithmetic-Geometric Series Calculator
- Average Speed Calculator
- Circle Through Three Points
- Complex Exponents (a+bi)c+di
- Consecutive Integer Problem Solver
- Cubic Equation Solver
- Cubic Through 4 Points
- Doubling/Tripling Time
- Exponential Equation Solver
- Fibonacci Number Length
- First-Order Rational Recurrence
- Geometric Series Calculator
- Half-Life Calculator
- Intersection of Two Lines
- Lambert W Function Calculator
- Logarithmic Integral Calculator
- Modulo Calculator
- Nested Radical Calculator
- Padovan/Perrin Sequences
- Parallel and Perpendicular Lines
- Parabolic Trajectory Calculator
- Parabolic Equation in Vertex Form
- Plane Through Three Points
- Quadratic Equations
- Quartic Equation Solver
- Quintic Equation Solver
- Radical Equations
- Rational Equations
- Shape of Hanging Rope, Cable, Chain
- Sum of Consecutive Integers
- Sum of Consecutive Powers
- Sum of Consecutive Squares
- Sum of Consecutive Triangular Numbers
- Third Order Linear Recurrence
- Three Equations in Three Variables
- Average Speed Calculator
- Celsius, Fahrenheit, and Kelvin Calculator
- Cumulative GPA
- Decimals-Fractions-Percents Conversion
- Factor Pairs Calculator
- Final Exam Grade Needed
- Fraction Comparison Calculator
- Greatest Common Denominator
- GPA Grade Point Average
- GRE and GMAT Admissions Calculator
- Least Common Multiple
- Long Multiplication Calculator
- Multiples of N Between A and B
- Number of Digits in ab
- Palindromic Number Calculator
- Percent Change Formula
- Power Towers xxx ...
- Prime Factorization with a Factor Tree
- Prime or Composite
- Radical/Root Simplifier
- Rationalize Complex Fractions
- Rationalize Fractions with Radicals
- Simplify Fractions
- Surface Area and Volume of a Cylinder
- Surface Area and Volume of a Sphere
- How to Calculate Your Class Grade
- Total Percent Change
- Unit Conversions
- Δ Side Angle Area Calculator
- Arc Angle and Radius
- Arch Perimeter/Area
- Area of Circular Segment
- Area of an Ellipse Segment
- Area of a Regular Polygon with n Sides
- Area, Perimeter, Diagonal of a Rectangle
- Barrel Dimensions Calculator
- Barrel Volume Calculator
- Circle Through Three Points
- Circles Inscribed Within an Annulus
- Circular Ring Circumscribing
- Circular Ring Inscribing
- Cone Construction Calculator
- Conic Section Through Five Points
- Descartes' Theorem Calculator 1
- Descartes' Theorem Calculator 2
- Descartes' Theorem Calculator 3
- Dihedral Angle Calculator
- Distance Between Two Cities
- Degree/Radian Conversion
- Ellipse Approximation: Method 1
- Ellipse Approximation: Method 2
- Ellipse Approximation: Quarter Circle Arcs
- Ellipse Area and Perimeter
- Ellipse Length and Width
- Elliptical Arch Calculator
- Heronian Triangle Generator
- Hexagon Calculator
- Hexagonal Circle Packing
- Intersection Angle 2 Circles
- Intersection Angle 2 Lines
- Intersection Point 2 Lines
- Kite Area Calculator
- Lamé Curve Calculator
- Maximal Box Volume (Lid)
- Maximal Box Volume (Open)
- Octagon Calculator
- Parabola Equation from Directrix &Focus
- Parabola Segment Area and Length
- Parabola Vertex, Focus, Directrix
- Parabolic Trajectory Calculator
- Parallel and Perpendicular Lines
- Parallelogram Calculator
- Pentagon Calculator
- Pentagonal Number Calculator
- Pie Chart Angles
- Plane Through Three Points
- Pythagorean Calculator: (A, B, nA + k)
- Pythagorean Calculator: (A, nA + k, C)
- Pythagorean Calculator: Hypotenuse
- Pythagorean Calculator: Leg
- Pythagorean Calculator: Perimeter
- Pyramidal Stack of Spheres
- Rectangle Dimensions Solver
- Rectangle Ratios: Golden Ratio
- Rectangle Ratios: Silver
- Rectangle Ratios: √2
- Right Triangle Calculator
- Rounded Rectangle
- Shape of Hanging Rope, Cable, Chain
- Spherical Distance
- Spherical Trig Calculator
- Square Pyramid Calculator
- Surface Area and Volume of a Capsule
- Surface Area and Volume of a Cone
- Surface Area and Volume of a Conical Frustum
- Surface Area and Volume of a Cylinder
- Surface Area and Volume of an Egg
- Surface Area and Volume of a Paraboloid
- Surface Area and Volume of a Sphere
- Surface Area and Volume of a Spherical Cap
- Surface Area and Volume of a Torus
- Tetrahedral Volume (Edges)
- Tetrahedral Volume (Vertices)
- Triangular Center Points
- Triangle from 3 Coordinates
- Triangle from 3 Lines
- Volume, Surface Area, Diagonal of a Rectangular Box
- Volume of Curved Pipe
- Volume of a Trough
- Analyze a Name with Numerology
- Base-n Converter
- Combination and Permutation
- Decimal to Hexadecimal
- Derangements/Subfactorial
- Distinct Prime Divisors ω(n)
- Divisor Function Calculator
- Egyptian Fractions
- Euler Totient Function Calculator
- Fibonacci Number Length
- Gaussian Integers Factorization
- Gaussian Prime Calculator
- Happy Numbers
- Hexadecimal to Decimal
- Integer Partition Function Calculator
- Linear Diophantine Equation Two Variables
- Möbius Function Calculator
- Palindromic Number Calculator
- Pell's Equation
- Power of 2 Fraction Denominator
- Prime Factorization w/ Factor Tree
- Prime or Composite
- Prime Number Calculator
- Repeating Decimals to Fractions
- Roman Numerals
- Arithmetic-Geometric Mean
- Beta Function Calculator
- Binomial Distribution Calculator
- Chi-Square Test Calculator
- Combination and Permutation
- Correlation Coefficient and Covariance
- Deming Regression
- Descriptive Statistics Calculator
- Difference Between Odds and Probability
- Digamma Function Calculator
- Erf(x) Calculator
- Exponential Distribution Calculator
- Exponential Regression: z = abxcy
- Gambler's Ruin
- Gamma Function Calculator
- Gini Coefficient Calculator
- Least Squares Circle
- Margin of Error
- Moving Average: Cumulative
- Moving Average: Cum. Wei.
- Moving Average: Exponential
- Moving Average: Geom. & Harm.
- Moving Average: Median
- Moving Average: Simple
- Moving Average: Weighted
- Multiple Linear Regression: z = ax+by+c
- Normal Distribution Probabilities
- Percentages for a Pie Chart
- Pie Chart Angles
- Power Regression: z = axbyc
- Quadratic Regression
- Random Number Generator
- Rand.Var.Gen.: Cauchy
- Rand.Var.Gen.: Chi
- Rand.Var.Gen.: Chi²
- Rand.Var.Gen.: Gaussian
- Rand.Var.Gen.: Gumbel
- Rand.Var.Gen.: Laplace
- Rand.Var.Gen.: Log-Logistic
- Rand.Var.Gen.: Logistic
- Rand.Var.Gen.: Log-Normal
- Rand.Var.Gen.: Pareto
- Rand.Var.Gen.: Triangular
- Rand.Var.Gen.: U. Sum (Cont.)
- Rand.Var.Gen.: U. Sum (Disc.)
- Rand.Var.Gen.: Weibull
- Rational Regression: y = (ax + c)/(x - b)
- Regression Calculator
- Required Sample Size
- Stochastic Oscillator Calculator
- Variance and Standard Deviation Calculator
- Weibull Distribution
Health
Technology
- Curved Pipe Volume
- Elliptical Tank Volume
- Engset Blocking Function
- Erlang B Calculator
- Erlang C Calculator
- Extended Erlang B Calculator
- Hexagonal Circle Packing
- Hollow Rectangular Beam Calculator
- I-Beam Calculator
- Learning Curve Calculator
- Photovoltaic Energy Load
- Pyramidal Stack of Spheres
- RGB to Grayscale
- RGB/HSI Calculator
- RGB/HSL Calculator
- RGB/HSV Calculator
- Rolled Sheet Length
- Rolled Sheet Thickness
- Solenoid Coil Wire Calculator
- Toroidal Coil Wire Calculator
- Carpeting Calculator
- Drywall Calculator
- Gallons of Paint Needed
- Hollow Rectangular Beam Calculator
- I-Beam Calculator
- Length of Wood Needed for Hardwood Floor
- L-Shaped Room Calculator
- Number of Tiles Needed
- Square Footage Calculator
- Tile Calculator: Hexagon
- Tile Calculator: Octagon/Square
- Tile Calculator: Two-Square
- Washer/Dryer vs. Laundromat
Automotive
Science & Miscellaneous
- Color Contrast Calculator
- Color Picker
- CSS/HTML Template Generator
- CSV to HTML Table Converter
- Decimal to Hexadecimal
- Hexadecimal to Decimal
- HTML Table Generator
- Random Dots Generator
- Random Password Generator
- RGB/Grayscale Calculator
- RGB/Hex Color Conversion
- RGB/HSI Calculator
- RGB/HSL Calculator
- RGB/HSV Calculator
- Screen Resolution
- Cat Years to Human Years
- Celsius, Fahrenheit, and Kelvin Calculator
- Days, Hours, Minutes, and Seconds
- Density of H2O Calculator
- Distance Between Two Cities
- Dog Years to Human Years
- Effective Population Size Calculator
- Half-Life Calculator
- Hardy-Weinberg 2 Alleles
- Hardy-Weinberg 3 Alleles
- Heat Index
- Horse's Age to Human Years
- Humidex
- Lens Focal Length Calculator
- Molecular Weight Calculator
- Molecules in a Glass of Water
- Parabolic Trajectory Calculator
- Refraction Index Calculator
- Sunrise and Sunset Times
- Unit Conversions
- Weight Unit Conversions
- Wind Chill Factor
- Analyze a Name with Numerology
- Ash Wednesday Calculator
- Bead Necklace Calculator
- Bra Size Calculator
- Convection Oven Conversion Calculator
- Correct Change Calculator
- Day of the Week Calculator
- Distance Between Two Cities
- Easter Date Calculator
- Filing Cabinet Capacity
- Final Exam Grade Needed
- Fish Tank Volume & Surface Area
- Gem Carat Weight
- Gini Coefficient Calculator
- Gold Purity Caratage
- Good Friday Calculator
- Goose Roasting Time Calculator
- GPA Grade Point Average
- Kitchen Volume Conversions
- Kitchen Weight Conversions
- Meatball Calculator
- Military Time, 24-Hour Clock
- Milkfat Calculator
- Number of Days Between Two Dates
- Palm Sunday Calculator
- Random Poem Generator
- Random Pseudonym Generator
- Scrap Gold Calculator
- Sunrise and Sunset Times
- Turkey Roasting Time Calculator
- Turkey Thawing Time Calculator
- TV Screen Size and Distance
- UK Ring Size Chart and Calculator
- US Ring Size Chart and Calculator
- Wedding Budget Calculator
Games & Sports
- 6/49 Lottery Number Picker
- Boggle (TM)
- Difference Between Odds and Probability
- EuroMillions Number Picker
- Extrapolated Runs
- Gambler's Ruin
- Golf Handicap Calculator
- Horse Racing Odds/Payout
- Lottery Jackpot Odds Calculator
- Lottery Ticket Numbers
- Lotto Max Number Picker
- Mega Millions Lottery Numbers
- On-Base Percentage
- Parlay Calculator
- Passer Rating/Efficiency
- Poker Dice, aka Yahtzee (TM)
- Powerball Lottery Numbers
- Pythagorean Expectation
- Rock-Paper-Scissors-Spock-Lizard
- Running Performance Prediction: Cameron
- Running Performance Prediction: Riegel
- Running Performance Prediction: VO2 Max
- Runs Created
- Secondary Average
- Slugging Percentage
- True Shooting Percentage
- Stolen Bases
See also our free embeddable calculators for your website.
Scientific Calculator
Allowable Numeric and Symbolic Entries:
1234567890 . / * + - ( ) e pi phi ( 1 + √5 )/2, em Euler-Mascheroni Constant
Standard Functions:
abs(x), sqrt(x), cbrt(x) cube root, ln(x), exp(x), pow(x,y) x^y, fact(x) x!
logb(x,y) log base x of y, root(x,y) x^(1/y), rand(x) random # between 0 and x
sin(x), cos(x), tan(x), sec(x), csc(x), cot(x) radians
asin(x), acos(x), atan(x), asec(x), acsc(x), acot(x) radians
sinh(x), cosh(x), tanh(x), sech(x), csch(x), coth(x)
asinh(x), acosh(x), atanh(x), asech(x), acsch(x), acoth(x)
Number Theoretic Functions:
gcd(n,m), lcm(n,m), comb(n,k) combination n choose k, perm(n,k) permutation n choose k
fib(n) nth Fibonacci #, luc(n) nth Lucas #, trib(n) nth Tribonacci #
pyth(n,m) Pythagorean triple generated by n and m
bin(n) binary, tri(n) ternary, oct(n) octal, hex(n) hexadecimal
Special Functions:
area(x,y,z) area of a triangle with sides x, y, z
det2(a,b,c,d) 2 by 2 matrix determinant
det3(a,b,c,d,e,f,g,h,i) 3 by 3 matrix determinant
Important Syntax Tips: Always use the * between quantities that are multiplied; parentheses alone will not work. Do not use the ^ for powers; use the pow(x,y) function instead. Happy calculating!
© Had2Know 2010