Contact

Questions, feedback or a calculator idea?

We read every message. Report an error, suggest a new tool, ask about partnerships or make a privacy request — we usually reply within 2 business days.

Email: care@calculations.oneReply: within 2 business daysHours: Mon–Fri, IST

Email us directly

The fastest way to reach the Calculations.one team. Every message is read by a person.

✉️ care@calculations.one

To help us reply faster, include:

01A clear subject — e.g. “Error report”, “New calculator request”, “Partnership”.

02The page link — if your message is about a specific calculator.

03Your inputs and expected result — for calculation errors, with the source of the expected figure if you have one.

04Device and browser — if something looks broken or doesn't load.

Please don't send passwords, bank or card details, or ID numbers by email. By contacting us you agree to our Privacy Policy.

General support

Questions about the site or a calculator.

care@calculations.one

Report a calculation error

Send the page link, your inputs and the expected result.

Report an issue →

Request a calculator

Tell us what you need to calculate and who it's for.

Suggest a tool →

Business & partnerships

Advertising, collaborations and licensing. Need a website built? See below.

Send an enquiry →

Privacy & grievances

Data access, correction or deletion, and complaints.

Privacy request →

Response times

Calculation errors1–2 business days

General questions≤ 2 business days

Privacy requestsAcknowledged ≤ 72 hrs

Business enquiries≤ 5 business days

Before you write

Answers to common questions

How quickly will I get a reply?

We aim to reply within 2 business days (Monday–Friday, IST). Calculation error reports are prioritised.

I think a calculator gave a wrong answer. What should I send?

The page link, the exact values you entered, the result you got and the result you expected (with its source if possible). This lets us reproduce and fix it quickly.

Can you give me personal financial, tax or medical advice?

No. We can explain how a calculator works, but we can't advise on your personal situation. Please consult a qualified professional.

How do I ask about advertising or partnerships?

Email care@calculations.one with “Partnership” in the subject line.

How do I request deletion of my data?

Email care@calculations.one with “Privacy request” in the subject. See our Privacy Policy for what we hold and your rights.

Can you build a website like this for me?

Calculations.one is designed and maintained by GetBizSetup, a part of An Evavel Group Company. For a new website — a business site, a tool or calculator site, or an online store — visit getbizsetup.com to get in touch.

Do you have a phone number?

We handle support by email so every request is tracked and answered in writing. Email is the fastest way to reach us.

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