Who maintains these tools
FreeToolsPoint maintains the calculators and their explanatory content. Support and corrections are handled through freetoolspoint@gmail.com. We do not claim that the tools are professionally certified or that health and financial outputs have received independent expert review.
Calculation methods
- Fractions: integer numerator/denominator arithmetic, greatest-common-divisor simplification and six-place decimal rounding.
- Percentage change: change divided by the positive original value, multiplied by 100. New values can be negative.
- Age: calendar months counted from the birth date, clamped to the final day of a shorter month, followed by remaining whole days. For official eligibility, use the relevant organization's date rules.
- BMI: kilograms divided by squared height in meters; the imperial form uses pounds and inches with the factor 703. Categories use unrounded values. These are adult screening tools, not diagnoses. CDC adult BMI categories.
- Loan EMI: fixed monthly payments with a constant annual rate divided into monthly periods. Zero interest divides principal by the number of months. Fees and changing rates are not modeled.
- Fitness ROI: first-year revenue from additional members, less entered additional costs and investment, divided by investment. All new members are assumed to pay for 12 months.
What our checks cover
The September 15, 2026 calculator repair checked arithmetic state transitions, malformed fractions, zero denominators, overflow, ROI costs and membership counts, and recovery after invalid inputs. Automated browser checks cover desktop and mobile widths. Tests cover selected examples and boundary cases; they cannot establish correctness for every possible input.
General arithmetic uses JavaScript numbers and can show floating-point rounding. Exact fraction output uses integers. Each tool explains its display precision and its limitations.
Writing and file tools
Prompt generation uses templates. Summaries select source sentences by repeated word frequency; they do not understand meaning. Hashtags and domain names are suggestions without popularity, availability or trademark checks. Currency rates are fixed reference data. DOCX conversion extracts basic text rather than preserving the original document layout.
Report a correction
Email the tool name, browser, inputs, actual result and expected result with your reasoning or source. Do not include private documents or sensitive personal data. We reproduce reported issues where possible, correct the calculation or explanation, and update the relevant review note when a material change is made.
Reviewed September 15, 2026. About FreeToolsPoint · Contact.