Editorial policy

Editorial Policy

Craft Calculators is owned and operated by Sparkbuilt Labs, LLC. Craft Calculators is the public name of this calculator website, not a separate legal entity.

The site publishes educational planning calculators for makers. Calculator pages are written to show the inputs, formulas, assumptions, examples, and safety limitations behind each estimate.

Sources and formulas

Where a calculator depends on published guidance, manufacturer-style assumptions, safety considerations, or material properties, the page includes sources or explains the assumption near the formula. Estimates should be verified against product labels, safety data sheets, reputable references, and hands-on testing when the project involves heat, chemicals, pressure, sharp tools, finished goods, or customer orders.

Corrections

If you find a formula issue, unclear assumption, broken link, or outdated source, email hello@craftcalculators.com. Please include the page, inputs, result, and what you expected so the issue can be reviewed.

Advertising and affiliate separation

Advertising and affiliate placements, if enabled, do not determine calculator formulas, safety notes, or source selections. Product mentions are for planning context and are not endorsements, guarantees, or substitutes for manufacturer instructions.