Trust and methodology
Calculator Methodology
How Tools by Layna calculators are built, checked, sourced and explained.
Why methodology pages matter
A calculator is only useful when the user can understand the assumptions behind the answer. These methodology pages explain how formulas, source notes, rounding rules, limitations and review notes are handled across the site.
The goal is not to make every calculator look more complicated. The goal is to make the result more trustworthy. Simple calculators still need plain-language explanations, source context and a clear line between general information and professional advice.
Unit Conversion Calculator Methodology
How Tools by Layna unit conversion calculators handle formulas, rounding, exact definitions, metric and imperial units, and source checks.
FinanceFinance Calculator Methodology
How Tools by Layna finance calculators handle formulas, assumptions, rounding, Australian context and professional-advice limits.
Health and nutritionHealth and Nutrition Calculator Methodology
How Tools by Layna health and nutrition calculators handle formulas, estimates, limitations, source notes and safe interpretation.
FitnessFitness Calculator Methodology
How Tools by Layna fitness calculators handle training formulas, exercise estimates, pace, intensity, volume and practical limitations.
How to use these pages
Use the category methodology page when a result could be affected by formulas, unit definitions, Australian rules, measurement standards or health assumptions. Use the content review page to understand the publishing process and the editorial policy for site-wide standards.