Contact us

We'd love to hear from you — whether you found a bug, have an idea for a new tool, spotted a mistake in a calculation, or have a business or advertising inquiry.

Email: support@toolskingmaster.com

To help us respond quickly

• Bug reports: include the tool's page address, what you entered, what you expected and what you saw, plus your browser and device.
• Tool requests: tell us what you're trying to get done — we prioritize the tools people ask for most.
• Corrections: link to the source or rule you're referring to so we can verify and fix it.

We typically reply within two business days. Please don't send sensitive personal or financial information by email.