Contact CalculatorDigital
Whether you want to report a formula error, suggest a new calculator, ask about an existing tool, or just send feedback โ we read every message. Typical response time is within 24 hours.
Typical response within 24 hours
Saidpur, Ghazipur, Uttar Pradesh, India
This is an online platform โ no physical walk-in office
Chandan Yadav
Software Engineer & Founder, Digitac Solution
๐ Formula Accuracy & Verification
If you discover a formula error, rounding discrepancy, or outdated statutory figure in any calculator, please share the calculator URL, the inputs you used, the result you received, and what you believe the correct result should be. Confirmed errors are fixed promptly.
Send a Message or Report an Issue
All messages go directly to Chandan Yadav (Founder, Digitac Solution) at digitacsolution@gmail.com.
What Can We Help With?
Share the calculator URL, your inputs, the result you received, and the expected result. Include a source reference if possible.
Need a calculator not currently on the site? Tell us what you need โ inputs, outputs, and what decision you are trying to make.
Want to understand how a formula works or what assumptions are used? Ask away โ we explain openly.
Usability, design, speed, accessibility โ any feedback that helps us improve is welcome.
Questions about our client-side architecture, localStorage use, or Google AdSense cookies? We answer those too.
Issues with language selectors, translations, or accessibility features? Let us know.
Frequently Asked Questions
How quickly will I receive a reply?
We aim to respond to all messages within 24 hours on working days. Formula error reports are prioritized and reviewed as quickly as possible.
What should I include when reporting a calculation error?
Please provide: (1) the URL of the calculator; (2) the exact values you entered; (3) the result the calculator produced; (4) the result you expected, along with a source or calculation method. This helps reproduce the issue quickly.
Can I use CalculatorDigital calculators for classroom or educational purposes?
Yes. All calculators are freely available for educational use. Students, teachers, and institutions are welcome to use and link to any calculator on the site.
Who is the Grievance Officer under Indian IT Rules?
Chandan Yadav serves as the Grievance Officer. You may contact him directly at digitacsolution@gmail.com with the subject line "Grievance Redressal".