Two figures in, a clear answer out. The parity calculator uses number, number, mod, count, string, even or odd and length b to produce last digit, applying the standard relationship for this problem in the order the calculation actually needs it.
What Is the Parity Calculator?
The parity calculator turns number, number, mod, count, string, even or odd and length b into last digit.
It is a quick way to get from the numbers you have to the number you need, without setting up a spreadsheet or reaching for a formula.
How the Parity Works
Each result follows from the ones before it, and the calculator shows every step, so a surprising answer can be traced back to the input that caused it.
Round your inputs to the precision you actually know, and keep more precision than that in the intermediate steps.
Getting a Result You Can Trust
Run the calculation twice with slightly different inputs. A sensible calculator moves its output in proportion; a wild change points to a unit or a decimal point problem in what you entered.
Write the inputs down next to the answer. It takes a moment and it is the difference between a number you can explain and one you cannot.
A Worked Example
Working through an example, with number set to 24, number set to 12, mod set to 6, the calculator returns last digit of 4. Substitute your own figures and the same steps produce the same kind of answer.
Frequently Asked Questions
What do I need to work out last digit?
Enter number, number, mod, count, string, even or odd and length b. The calculator then works through the relationship and reports last digit.
What does the parity actually calculate?
It takes number, number, mod, count, string, even or odd and length b and converts them into last digit using the standard relationship for this problem. Each step is applied in turn, so every output is traceable back to the numbers you typed in.
How should I enter number?
Use the value you actually have, in the unit shown next to the field. Enter every value in the same unit system. The calculator assumes the figures you supply are consistent, so it cannot correct a mistake that happens before the calculation starts.
Does anything you type get stored?
No. The whole calculation runs inside your browser, and nothing you enter is uploaded, logged or sent anywhere.
Do I have to fill in every field?
Only the fields a particular result depends on. If you leave one blank, the results that need it simply show a note instead of a number, and everything else still works.