Calculators
11 free online tools in Calculators: Calculator, Math Studio, Calculator Catalogue, Salary & VAT calculator, Currency & units, CBM & container, Loan &…
Open Afoli →Calculators & maths
- CalculatorStandard and scientific calculator with history and function graphs.
- Math StudioGraphing calculator: functions, polar and parametric curves, inequalities, animated sliders, roots and…
- Calculator Catalogue150+ calculators in 13 categories: math, statistics, physics, chemistry, biology, finance, construction…
Money & units
- Currency & unitsLive currency rates and unit conversion in 13 categories: length, weight, temperature, area and more.
- Loan & interestLoan & mortgage payments, amortization schedule, savings from extra payments and compound-interest deposits.
- Salary & VAT calculatorGross ↔ net salary: income tax brackets, social contributions, allowances; add or remove VAT/GST — 40+…
Building, energy & sensors
- Construction calculatorConcrete, bricks and blocks, tiles, paint, rebar and plaster — materials and cost
- Solar panel calculatorHow many panels do you need? Output, savings and payback from your location’s sunshine (NASA data)
- Phone sensor toolsBubble level, true-north compass, sound meter (dB), ruler, magnifier, flashlight, mirror, inclinometer…