If you need total time and you already have time 1, time 10, time 11, time 12, time 13, time 14, time 15, time 16, time 17, time 18, time 19, time 2, time 20, time 3, time 4, time 5, time 6, time 7 and time 8, this calculator does the substitution for you. It suits a quick check, a homework answer you want to confirm, or any figure you need to sanity test.
What Is the Time Adder Calculator?
The time adder calculator turns time 1, time 10, time 11, time 12, time 13, time 14, time 15, time 16, time 17, time 18, time 19, time 2, time 20, time 3, time 4, time 5, time 6, time 7 and time 8 into total time.
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 Time Adder 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 time 1 set to 10, time 10 set to 5, time 11 set to 2, the calculator returns total time of 485. Substitute your own figures and the same steps produce the same kind of answer.
Frequently Asked Questions
What do I need to work out total time?
Enter time 1, time 10, time 11, time 12, time 13, time 14, time 15, time 16, time 17, time 18, time 19, time 2, time 20, time 3, time 4, time 5, time 6, time 7 and time 8. The calculator then works through the relationship and reports total time.
What does the time adder actually calculate?
It takes time 1, time 10, time 11, time 12, time 13, time 14, time 15, time 16, time 17, time 18, time 19, time 2, time 20, time 3, time 4, time 5, time 6, time 7 and time 8 and converts them into total time 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 time 1?
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.
Can I use this for a quick estimate as well as a precise answer?
Yes. The calculator is built for quick checks, so round your inputs to a sensible number of significant figures and the result will be just as useful. If you need more precision, keep the same method and add digits to the inputs rather than adjusting the method itself.
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.