Contact us
Have a question, found a bug or want a new tool? Send us a message.
Your email app should open with the message ready to send. If it does not, write to us directly at umarm562@gmail.com.
Before you write
Many questions already have an answer. Our FAQ covers 60 common questions about percentages, profit and loss, conversions and privacy. The articles explain the formulas step by step.
What we can help with
- Wrong or confusing result: tell us the tool and the exact values so we can repeat it.
- Bug or layout problem: include your device, browser and what you saw on screen.
- New tool or article idea: describe what you want to calculate or learn.
- Privacy question: see the Privacy Policy first, then write if you need more.
An example of a helpful message
"On the percentage calculator I chose Discounted price, entered 80 and 25, and expected 60. I use Chrome on an Android phone."
We cannot give financial, tax or legal advice, and we cannot promise a reply to every message.
Good to include
- The tool you were using and the values you entered.
- The device and browser, if you are reporting a problem.
We read every message, though we cannot always reply to each one. For how we handle your details, see the Privacy Policy.