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Free
Online Calculators
Here's a group of totally free online calculators (developed
on spreadsheets) that seem to have great demand by internauts.
Statistical Calculators
TDistribution
Calculator
The shape of the
Student's tdistribution is determined by the degrees of freedom. Its
shape changes as the degrees of freedom increases. Try this online
spreadsheet...
Binomial
Distribution Calculator
This
calculator asks to enter
three parameters: the number of trials (N),
the exact number of successes (n), and the probability of success (p).
Normal
Distribution Calculator
This calculator asks to enter three parameters:
the known mean of your distribution, its standard deviation and the
value you want to explore. The outputs are the frequency
and the probability of the value under study...
Poisson Distribution Calculator
Online Poisson distribution calculator. Outputs the probability of an
event occurring a given number of times. You must know the expected
frequency of the event...
FDistribution Table
Calculate percentile values for given
values on an Fdistribution curve. You must provide the Fvalue, and
the degrees of freedom...
ChiSquare Calculator
This spreadsheet calculates the tailend value for points on a
chisquare (X^{2}) distribution curve. You must
enter the value and the degrees of...
Financial Calculators
Simple Interest Formula
Online simple interest formula  use this spreadsheet to experiment
with your numbers...
Calculate Compound Interest
This interest appears when the interest is added to the principal, and
that earns
interest, too...
Calculate
Monthly Loan Payments
This
spreadsheet calculates the amount required as regular payments
in order to
repay a
loan over a specified time period. You enter the
principal...
Future Value Calculator
Find
a future value calculator of an investment. On this
spreadsheet,
it's necessary to provide the amount of the initial investment...
Nominal / Effective Interest for Savings Calc
Online calculation of nominal and effective interest rates...
Future Value Annuity
Online
Future Value Annuity calculator. You enter regular deposits, number of
deposits, number of years and nominal interest rate...
Deposit
Interest Calculator
With
this Term Deposit Interest Calculator you can calculate the amount
required as regular deposit to provide a stated future value in a
period...
Calculate Depreciation
Find
out your depreciation rate or amount. You have to
enter original
price, year of depreciation and either resale price or
depreciation rate...
Electricity Cost Calculator
Before
you do a final calculation for your household, we recommend
checking the tags and owners manuals for your appliances to get better
figures...
Salvage Value The so called salvage value is the estimated value that a particular asset will be worth at the end of its useful life...
Basic Calculators
Quadratic
Equation Solver
Find a quadratic
equation solver developed on a simple spreadsheet. It uses
the known formula to calculate roots (real and complex) of a
quadratic expression.
Equation of a
Straight Line
Find
the equation of a straight line with this online calculator. Provide
two points and the calculator will deliver slope and intersect...
Halflife Calculator
Halflife is the period of time it takes for a substance undergoing
decay to decreas by half.
Online Base Conversion
Convert numbers in binary, octal, decimal
and hexadecimal.
Ohm's Law Calculator
Calculate voltages, currents, resistors...
Percentage
Calculator
A percentage calculator widget. You can solve problems like
what is x%
of y? x is what percent
of y?
Calculate Area
Calculate Square Feet
Right Triangles 
Pythagorean Theorem
Solve right triangles.
Body Mass Index
Check your health. Don't forget to see a doctor if in doubt...
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