**UNIT CONVERSION**

http://www.digitaldutch.com/unitconverter/

This site has a very intuitive interface and covers just about anything a lab scientist might need. You can also change the number of digits that it shows. However, it doesn’t show you the equation it is using, so you can not use it to eventually gain independence.

**MICHAELIS-MENTEN**

Michaelis-Menten Grapher at Physiology.Web

Physiology.web often has very useful calculators and explanations. Their interactive Michaelis Menten equation grapher is a very nice way to explore what can be a difficult concept to grasp.

### STATISTICS – EFFECT SIZE AND MORE

http://effectsizefaq.com

This size has some great explanations of statistical concepts. Highly recommended.

**CONVERTING BETWEEN RPM AND RCF**

http://insilico.ehu.es/mini_tools/rcf_rpm.php

This is very straightforward – input your RPM and your rotor radius and voila. It even shows you the equation it uses.

### Birth of the Blog

This blog, like the book *Lab Math* from which it springs (incompletely formed), will be about numbers. I will endeavor to:

1. showcase the basic and the practical, not the challenging or even the advanced;

2.. provide straightforward guidance for the unenthusiastic (“just do it exactly this way”);

3.. provide refreshers for those needing refreshment (whether they know it or not.)