A good DIY project starts before the first tin is opened or the first board is cut. It starts with a few clear measurements and a plan you can actually use.
Less guesswork at the shop
MyDIYCalc brings free materials calculators and practical buying guides into one place. Whether you are refreshing a room, filling a raised bed or planning a new floor, the aim is the same: make the numbers easier to understand before you spend.
You can see how the answer works
Each calculator explains its assumptions, shows the formula and includes a worked example. The coverage on your own product may differ, so use its label and installation instructions when making the final order.
Small projects deserve a clear plan too
You do not need an account to use the tools. Start with one calculator, read the linked guide if you need a little context, and keep your measurements with your shopping list.
Help us make the tools better
If a label, example or result looks wrong, send us the page, your inputs and the result you expected. Specific details make a correction much easier to check. You can reach us through the contact page.