MPC Calculator (Applet won't run? Click here...)

It has been developed primarily as the first step in providing interactive content on the site and largely as a C# familiarisation exercise. It is a little restricted in terms of deployability and probably will only work well in Internet Explorer. The next tool will be developed specifically with wider deployability in mind and this calculator may be retro-fitted then - so keep an eye-out here.

The calculator operates simply:

• Yellow boxes allow for entry of values
• The simple volumetric. mass and temperature conversions happen immediately and the appropriate values are updated when any simple-conversion entry is made.
• Green boxes show results that depend on several inputs and these are only calculated once the 'Calculate' button () has been selected.
• The 'Clear' button (resets all values to the defaults.

The functions provided by the calculator are:

• Calculate new exposure time from a given exposure time for a given exposure shift expressed in 'stops', or part thereof (e.g. 60s + 1.5stops = approx 170s)
• Calculate the required exposure when the enlargement changes given the current exposure the current width or height and new width or height after the change in enlargement.
• Perform volumetric, mass and temperature conversion between metric, UK Imperial and US Imperial for: milliliters and fluid ounces; Liters and gallons; Grams, grains and ounces; Degrees Celsius and Fahrenheit. 
• Calculate required quantities of stock and water for a given '1+' dilution and desired solution quantity.
• Calculate the numbers of parts of two stock solutions at different percentage strengths in order to mix a working solution at a given strength.
• Look-up the Y and M settings on various enlarger to achieve a given grade on Ilford or Kodak Multigrade papers.