Support

EMAIL S@TRADINGCALC.IO

Write to us

One address for everything below: s@tradingcalc.io.

A result looks wrong

Send the calculator or tool name, the exact inputs you entered, the number you got and the number you expected, with the source of the expected one (an exchange page, a broker document, your own calculation). With those four things a result can be reproduced and checked the same day. The core formulas are tested against public vectors, see the verification page.

MCP, ChatGPT or Claude plugin problems

Tell us which client you use (ChatGPT, Claude, Cursor or another), the tool name, and the error text. The server address is https://tradingcalc.io/api/mcp, no sign-in is needed. Install steps and every tool are in the API and MCP reference.

More calls per day, an API key

Anonymous use is limited per IP address each day. A free API key raises that limit. Ask by email and say what you are building.

Privacy and terms

What happens to the values you enter is described in the privacy policy, the conditions of use are in the terms. To ask about either, use the same address.

TradingCalc computes numbers from the inputs you give it. It is not financial advice and it does not place trades.