Contact CalcKit
Get in touch with the CalcKit team. We welcome bug reports, corrections, and suggestions for new calculators. If a result looked wrong, tell us which calculator you used and the exact inputs you entered — that lets us reproduce and fix issues quickly. You can also request entirely new calculators. The collection has grown to 280 tools across math, health, finance, and conversion, and many additions came from user requests, especially specialized converters and construction estimators. Before writing, check whether the tool already exists using the search on the homepage, and read the formula notes on each calculator page, which answer the most common questions about how results are computed.