Currency Converter
Selected public calculator route remains deferred until exchange-rate source governance, freshness policy, and non-advice copy are approved.
Deferred
Calculators
Calculators family posture defined in CAT1.
Public search eligibility for this family.
Search includes Active, StageActive, ComingSoon, and Planned tools. Deferred and InternalOnly tools are excluded from search results.
Search targets family name, tool name, descriptions, and catalogue tags or codes.
Calculators tools in the catalogue.
Fuel Cost Calculator
Deferred until an approved official fuel-price source and freshness policy exist.
Deferred
Electricity Cost Calculator
Deferred until tariff-source policy and locality posture are approved.
Deferred
Inflation Calculator
Deferred until official inflation-source governance and freshness policy exist.
Deferred
Transfer Cost Calculator
Deferred until legal/source policy and locality posture are approved.
Deferred
Municipal Rates Estimate Calculator
Deferred until locality-scoped source policy and disclaimer posture are approved.
Deferred
Bond Affordability Calculator
Deferred until source policy and finance-risk disclaimer posture are approved.
Deferred
Percentage Calculator
Solve common percentage-of, percentage change, and proportion calculations with deterministic arithmetic only.
ActiveExecution
Compound Interest Calculator
Calculate compound interest from principal, annual rate, time, and compounding frequency inputs for estimate-only planning.
ActiveExecution
Discount Calculator
Calculate discount amount and final price from original price and discount percentage inputs.
ActiveExecution
Tips Calculator
Calculate tip amount and total per-person cost.
CatalogueOnly
Average Calculator
Calculate arithmetic averages and related list statistics from numeric values.
ActiveExecution
Ratio Calculator
Simplify and compare numeric ratios with deterministic arithmetic only.
ActiveExecution
Rounding Calculator
Round values using standard, up, down, and truncate modes with bounded decimal places.
ActiveExecution
Number Difference Calculator
Compare two numbers with absolute, signed, and percentage difference outputs.
ActiveExecution
Proportion Calculator
Solve missing proportion values from equivalent ratios.
CatalogueOnly
Rule of Three Calculator
Solve direct proportion scenarios using the rule of three.
CatalogueOnly
Age Calculator
Calculate age in years, months, and days from a birth date and as-of date using deterministic date arithmetic only.
ActiveExecution
Weeks Between Dates Calculator
Calculate whole weeks, remaining days, and week decimals between two dates using deterministic arithmetic only.
ActiveExecution
Countdown Calculator
Create and display countdown durations with governed non-executable readiness posture.
CatalogueOnly
Business Days Calculator
Calculate business days between two dates once holiday-policy and calendar assumptions are approved.
CatalogueOnly
Academic Pass Mark Calculator
Plan weighted assessment marks for a class or module and estimate the average needed on remaining assessments.
ActiveExecution
Days From Date Calculator
Add or subtract a signed number of days from a base date using deterministic Gregorian arithmetic only.
ActiveExecution
Final Mark Needed Calculator
Estimate the final-mark requirement to reach a target result from current weighted mark, completed weight, and target final mark inputs.
ActiveExecution
Time Duration Calculator
Calculate duration between two times with optional overnight handling and no timezone or calendar dependencies.
ActiveExecution
Time Add/Subtract Calculator
Add or subtract time values once rollover rules and public posture are approved.
CatalogueOnly
Weighted Grade Calculator
Calculate weighted grade totals from assessment components with marks and weights.
ActiveExecution
Loan Repayment Calculator
Estimate monthly repayment, total repayment, and total interest from entered principal, rate, and term values only.
ActiveExecution
Test Average Calculator
Calculate average test marks, count, min, max, and optional pass counts from supplied marks.
ActiveExecution
GPA Calculator
Calculate cumulative GPA from grade points and credit values using a declared scale.
ActiveExecution
Study Time Planner Calculator
Plan study sessions and target time allocations from manually entered estimates.
CatalogueOnly
Assignment Weight Calculator
Estimate assignment weighting effects from manually entered marks and weights.
CatalogueOnly
Pass / Fail Scenario Calculator
Estimate pass/fail arithmetic scenarios from manually entered marks and thresholds.
CatalogueOnly
Basic Invoice Generator
Generate invoice-ready text output from locally entered line items with deterministic arithmetic only.
ActiveExecution
Basic Quote Generator
Generate quote-ready text output from locally entered line items with deterministic arithmetic only.
ActiveExecution
SA Phone Number Normaliser
Normalise South African phone number input into deterministic E.164-style output using local rules only.
ActiveExecution
Markup Calculator
Calculate markup amount and selling price from cost and markup percentage inputs.
ActiveExecution
Margin Calculator
Calculate profit amount and gross margin percentage from cost and selling price inputs.
ActiveExecution
Simple Interest Calculator
Calculate simple interest from principal, annual rate, and time inputs for estimate-only planning.
ActiveExecution
Savings Goal Calculator
Project a savings target using current savings, monthly contribution, and annual rate inputs for estimate-only planning.
ActiveExecution
Profit Calculator
Calculate profit amount and profit margin percentage from revenue and cost inputs.
ActiveExecution
SA ID Parser
Parse basic coded fields from a South African ID number using local checksum and date rules only.
ActiveExecution
SA ID Validator
Validate South African ID number format with local date and checksum rules only.
ActiveExecution
Exam Countdown
Calculate days and weeks until an exam date using deterministic date arithmetic only.
ActiveExecution
Simple Break-even Calculator
Estimate break-even units and revenue from fixed cost, price, and variable cost inputs.
ActiveExecution
Hourly Rate Calculator
Estimate an hourly rate from target income, costs, and billable hours.
ActiveExecution
Contract-first route posture.
SURF1 standardizes the route model at /tools/{family}/{tool-slug}, /tools/{family}/{tool-slug}/use, /tools/{family}/{tool-slug}/resources, and /tools/{family}/{tool-slug}/execute. Traditional tools remain non-executable in this pass.
Indexing and metadata posture.
- Canonical path
- /tools/calculators
- Production canonical metadata
- https://tools.whitelyin.co.za/tools/calculators
- Indexability status
- QualityCandidate
- Quality content readiness status
- ExpandedContentExpected
- Structured data posture
- FutureStructuredDataCandidate
- Ad placeholder eligibility
- PublicPlaceholderEligible