Calculators
Numbers, percentages and everyday calculations.
Work out everyday arithmetic, percentages, changes and VAT. Explore the available calculators and choose the right one for your numbers.
Online calculator
Calculate with percentages, decimals and parentheses.
Scientific calculator
Calculate powers, roots, logarithms and trigonometric functions.
Weighted average and ECTS
Calculate an Italian university grade average weighted by ECTS credits.
Italian graduation grade simulator
Estimate an Italian graduation grade from average, thesis points and bonuses.
Fraction calculator
Add, subtract, multiply and divide fractions with an exact simplified result.
Proportions and rule of three
Solve direct and inverse proportions using the rule of three.
VAT calculator
Add VAT to a net amount using a rate of your choice.
Remove VAT
Extract VAT from a gross total to find the net amount and tax.
Compound interest and savings plan
Simulate compound interest with monthly contributions and an annual breakdown.
Circle area
Area del cerchio: formula A = π × r², dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Circle circumference
Circonferenza del cerchio: formula C = 2 × π × r, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Triangle area
Area del triangolo: formula A = b × h ÷ 2, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Trapezoid area
Area del trapezio: formula A = (B + b) × h ÷ 2, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Rectangle area
Area del rettangolo: formula A = b × h, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Rhombus area
Area del rombo: formula A = D × d ÷ 2, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Parallelogram area
Area del parallelogramma: formula A = b × h, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Sphere volume
Volume della sfera: formula V = 4 × π × r³ ÷ 3, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Cylinder volume
Volume del cilindro: formula V = π × r² × h, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Cone volume
Volume del cono: formula V = π × r² × h ÷ 3, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Cube volume
Volume del cubo: formula V = l³, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Cuboid volume
Volume del parallelepipedo: formula V = l × w × h, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Pyramid volume
Volume della piramide: formula V = A × h ÷ 3, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Square root
Radice quadrata: formula x = √n, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Prime factorization
Scomposizione in fattori primi: formula n = p₁^a₁ × p₂^a₂ × …, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Equation solver
Risolutore equazioni: formula a × x² + b × x + c = 0, dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Least common multiple
Minimo comune multiplo: formula mcm(a,b) = |a × b| ÷ MCD(a,b), dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Greatest common divisor
Massimo comune divisore: formula MCD(a,b) = MCD(b, a mod b), dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Combination calculator
Calcolo combinazioni: formula C(n,k) = n! ÷ (k! × (n−k)!), dati personalizzati e risultato copiabile. Gratis, senza registrazione.
Mortgage payment
Estimate a fixed nominal-rate mortgage payment with a monthly schedule. Rounded to cents with an adjusted final payment; fees and variable rates excluded.
Loan payment
Calculate a fixed nominal-rate loan payment and interest cost. 1–600 monthly payments; extra fees excluded. Final payment adjusted to the remaining balance.
Amortization schedule
Generate a fixed-payment monthly amortization schedule: principal, interest and remaining debt. Export CSV. Fixed nominal rate, exact cents, adjusted final payment.
APR calculator
Estimate APR from principal, equal monthly payments and entered fees. Solves cash-flow present value with equal months. Does not replace contractual APR.
Savings plan simulator
Simulate a savings plan with initial capital, monthly deposits and constant effective annual return. Annual table and CSV; excludes tax, costs and inflation.
ROI calculator
Calculate ROI as net profit divided by investment cost. Revenue or final value and costs must cover the same period; the return is not annualized.
ROAS calculator
Calculate attributed revenue divided by advertising spend. A 3× ROAS equals 300% of ad costs and does not measure net profit.
Margin and markup
Distinguish margin on price from markup on cost. Cost 60 and price 100 gives 40% margin and 66.67% markup. Use values excluding VAT for a consistent comparison.
Business break-even
Find units needed to cover fixed and variable costs. Rounds units up; unit price must exceed variable cost. Single-product model.
Selling price
Find selling price from cost and target margin or markup. Margin must be below 100%. Currency result rounded to cents, without automatic VAT.
Fuel consumption
Calculate L/100 km, km/L and fuel cost from distance, fuel used and price. Distance and fuel must refer to the same trip; cost in euros.
BMI calculator
Calculate adult BMI from weight and height. A general index, not a diagnosis: it does not distinguish muscle and fat or apply in the same way during pregnancy or childhood.
Basal metabolic rate
Estimate resting energy with Mifflin–St Jeor (ages 19–78). Not a clinical measurement of basal metabolism. Not for pregnancy, breastfeeding or medical conditions.
Calorie needs
Indicative energy estimate: Mifflin–St Jeor × chosen PAL (1.4–2.4), for healthy adults 19–78. Not a diet prescription; excludes pregnancy, breastfeeding and medical conditions.
Running pace
Calculate average pace per km and mile and speed from distance and time. Projections assume constant pace and do not predict performance or endurance.