There is no point reaching for a calculator that cannot show its working. This one starts from carbon footprint of one book, number of books i read, carbon footprint, e reader lifetime, carbon footprint of one magazine, please tick all the other kinds of materials you also read…, number of magazines i read, carbon footprint of one newspaper, newspaper options and number of newspapers i read and reports read over e-reader’s lifetime, planted trees equivalent and co2emission reduction, so you can see how each answer follows from the numbers you entered.
What Is the Books Vs E Books Calculator?
The books vs e books calculator works out read over e-reader's lifetime, planted trees equivalent and co2emission reduction from carbon footprint of one book, number of books i read, carbon footprint, e reader lifetime, carbon footprint of one magazine, please tick all the other kinds of materials you also read..., number of magazines i read, carbon footprint of one newspaper, newspaper options and number of newspapers i read.
Biological relationships are usually approximations rather than exact laws, so the output is best treated as an estimate with a sensible range around it.
How the Books Vs E Books Calculation Works
The calculation applies the relationship as published, step by step, so each intermediate value can be checked against the underlying theory.
Keep the units consistent throughout. Mixing a percentage with a proportion is the single most common source of an answer that is out by a factor of a hundred.
Assumptions Worth Knowing
Any relationship used here assumes a constant rate, a representative sample, or a stable population. Real populations rarely meet those conditions for long, so treat the answer as a guide.
Where the inputs are field measurements, a single misread value can shift the result noticeably. Measure carefully and record what you used.
A Worked Example
Working through an example, with carbon footprint of one book set to 10, number of books i read set to 5, carbon footprint set to 2, the calculator returns read over e-reader's lifetime of 500, and read over e-reader's lifetime (e reader lifetime magazine) of 500, and read over e-reader's lifetime (e reader lifetime newspaper) of 10,000. Substitute your own figures and the same steps produce the same kind of answer.
Frequently Asked Questions
What do I need to work out read over e-reader's lifetime?
Enter carbon footprint of one book, number of books i read, carbon footprint, e reader lifetime, carbon footprint of one magazine, please tick all the other kinds of materials you also read..., number of magazines i read, carbon footprint of one newspaper, newspaper options and number of newspapers i read. The calculator then works through the relationship and reports read over e-reader's lifetime, planted trees equivalent and co2emission reduction.
What does the books vs e books actually calculate?
It takes carbon footprint of one book, number of books i read, carbon footprint, e reader lifetime, carbon footprint of one magazine, please tick all the other kinds of materials you also read..., number of magazines i read, carbon footprint of one newspaper, newspaper options and number of newspapers i read and converts them into read over e-reader's lifetime, planted trees equivalent and co2emission reduction 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 carbon footprint of one book?
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.
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.
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.