The clock duration calculator works out clock duration, start time 24 and end time 24 from am or pm?, am or pm?, hour, hour, minute, minute, second, second and if else. Enter what you have and the relationship is applied straight away, so you get the answer without working through the algebra yourself.
What Is the Clock Duration Calculator?
The clock duration calculator turns am or pm?, am or pm?, hour, hour, minute, minute, second, second and if else into clock duration, start time 24 and end time 24.
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 Clock Duration 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 am or pm? set to 0, am or pm? set to 0, hour set to 10, the calculator returns start time of 110, and end time of 22, and start time 24 of 110. Substitute your own figures and the same steps produce the same kind of answer.
Frequently Asked Questions
What do I need to work out clock duration?
Enter am or pm?, am or pm?, hour, hour, minute, minute, second, second and if else. The calculator then works through the relationship and reports clock duration, start time 24 and end time 24.
What does the clock duration actually calculate?
It takes am or pm?, am or pm?, hour, hour, minute, minute, second, second and if else and converts them into clock duration, start time 24 and end time 24 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 am or pm??
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.
Why does a small change in one value move the answer so much?
That happens when an output depends on a ratio, because dividing by a small number magnifies any change in it. Check the units first, then check whether the value you entered is in the range the relationship was designed for.
Is the answer exact?
It is as exact as the formula and the inputs allow. The method itself is the standard one for this problem, so the only sources of error are the figures you enter and the precision you ask for.