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Convertors

Unit conversion calculators We have the largest and most advanced selection of aquarium calculators and unit convertors you'll find anywhere on the Internet. To use these handy gadgets you'll need to become a registered member of the website.



Alkalinity conversion calculator Alkalinity convertor
A reef owner's calculator for converting between the several different measurements used for alkalinity.
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Volume conversion calculator Volume convertor
This volume conversion tool will convert Imperial gallons to litres or US gallons and vice versa.
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Length conversion calculator Length convertor
Convert inches to cm, metres to feet, miles to kilometres and dozens of other length permutations with our length translation tool.
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Temperature conversion calculator Temperature convertor
Convert a temperature in Fahrenheit to Celsius, and do the same the other way round using this handy convertor.
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Weight conversion calculator Weight convertor
Converts kilograms to stones, pounds to grams, and virtually any other weight conversion you can throw at it.
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Roman numeral conversion calculator Roman numeral convertor
Understand the fin formulae used in fish descriptions, such as D-IV-9, with this convertor for Arabic and Roman numerals.
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Flow rate conversion calculator Flow rate convertor
Work out how many litres per hour that pump does with its output quoted at 1000 US gph with our handy Flow rate conversion gadget.
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Surface area conversion calculator Surface area convertor
How many square feet are there in 1000 square metres? This calculator can give you the answer to this and dozens of other area-related calculations.
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Hardness conversion calculator Hardness convertor
This program works out different measures of water hardness, from GH to Meq/l of calcium carbonate.
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Concentration conversion calculator Concentration convertor
Translate between parts per thousand, parts per billion and parts per thousand with this neat concentration conversion program.
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Conductivity conversion calculator Conductivity convertor
This program converts between Total Dissolved Solids (TDS) readings and conductivity, which are becoming more widely used in Discus keeping circles.
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Unit conversion calculator Multi-convertor
All the other convertors in one handy program. This online conversion tool will work out just about any measurement you can think of.
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Fishkeeping calculators Calculators
Like these calculators? We've got 23 even cooler ones in our newly expanded calculators section.
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