Tool pages show the inputs, formula or method, examples, benchmarks, and limitations whenever possible.
Accuracy
Formulas, methods, assumptions, and limits are shown on each tool.
Toolkit Shelf calculators and tools are meant for quick estimates, comparisons, drafting, checks, and everyday planning. Tool pages include the relevant formula or method whenever possible.
Results can change based on rounding, assumptions, local rules, tax treatment, fees, source data, or personal circumstances. Money, health, housing, tax, legal, and business tools are planning aids, not professional advice or approval decisions.
Benchmarks are treated as broad planning ranges unless a page explicitly names a source for that range. When a sensitive page uses an outside reference, the source note appears near the details section so the assumption can be checked.
Money, tax, health, and housing pages use source notes when a public reference helps explain a formula, limit, or warning.
Pages distinguish formula visibility, source notes, planning estimates, and user-entered assumptions. Expert review is not implied unless the page says so.
The contact page is the correction path for formula issues, confusing wording, missing assumptions, or outdated benchmarks.
The public methods and sources directory shows the current formula count, source-backed page count, reviewed method versions, source timing, validity conditions, and reliance boundaries derived from the live catalog.
Review labels
Review labels used on pages
Date labels define the scope of the check. Capability labels such as source notes and planning estimates describe the page, not the reviewer. The full definitions also appear in the editorial policy.
The date of the catalog-wide automated and editorial QA baseline. It is not a tool-specific expert-review claim.
The page copy, inputs, result behavior, and visible assumptions were checked together for that tool on the stated date.
The documented method, source timing, validity conditions, and reliance limits were checked for that tool on the stated date.
The page links to a public reference when an outside formula, benchmark, rule, or warning helps explain the result.
The result is for scenario planning and comparison, not a quote, approval, diagnosis, filing result, or professional decision.
The page has not been labeled as reviewed by a licensed expert, clinician, tax professional, engineer, attorney, or financial advisor.
Use outputs for planning and comparison. Rates, withholding, fees, eligibility, and local rules can change the real result.
Health calculators are screening or planning tools. They do not diagnose conditions or replace medical or nutrition guidance.
Material calculators estimate quantities and waste. Structural design, permits, site conditions, and code compliance require a qualified professional.
Pricing, invoice, runway, and sponsorship outputs are scenario estimates. Contracts, rights, taxes, payment timing, and market demand can change decisions.