Control X-10 device with Insteon Hub


All this does is make urls so that you can control your insteon hub over the internet or ethernet using http get calls. This will enable you to write sophisticated programs in PHP to control your devices.
click here to use the calculator

How old is your dog in human years?


This calculator will allow you to calculate the age of your dog in human years. This is not an exact science and no one formula for dog-to-human age conversion is scientifically agreed on but it gives an approximate way of considering how old a dog is when compared to a human.
click here to use the calculator

Heating water


How long does it take to heat water up depends on the volume of water, the energy used, the starting temperature and the finishing temperature. Here you can calculate how long it takes to heat the water so you will know how long it will be before you can have a shower.
click here to use the calculator

Currency Converter


Using the currency converter you can convert 83 different currencies. The results come from the European Central Bank so the results are always up to date.
click here to use the calculator

Birthday Celebration Calculator


Are you bored of having the same birthday every year? Do you want an excuse for a party? Use our thousand day aniversary calculator to find dates to celebrate.
click here to use the calculator

Calculating the requirements for an off-grid solar power system.


Calculating the requirements for an off-grid solar power system It is very important to make good calculations when you design a solar system mainly because it is not possible to mix old batteries with new ones so you have to get it right first time. This calculator will help you calculate your requirements.
click here to use the calculator

Find the difference between two dates.


Calculate the number of days between two dates. This could be used to find out how long you have been married or how long it is since you started something.
click here to use the calculator

Electrical cost calculator


See how much an electrical device costs to run and compare it to another device so you can see how much money you would save if you change it.
click here to use the calculator

Add days to a date


Add a number of days to a date to find a date in the future.
click here to use the calculator

How long does the hot water last when taking a shower?


I sometimes have arguments with the rest of my family because there is often not enough hot water for us all to have a shower in the morning. When we all need to have a shower I would like to know how long each of us can spend in the shower depending on the size of our water tank which is 75 litres. Can you calculate how long the water the water will last?
click here to use the calculator