Calculators

VAT, percentages, dates, mortgage, units and more

• VAT calculator (Spain) · Add or remove Spanish VAT at 21, 10 or 4%, with equivalence surcharge
• Percentages · Work out percentages, changes, increases and discounts
• Date difference · Days, weeks, months and working days between two dates
• Age calculator · Your exact age, days lived and how long until your birthday
• Unit converter · Length, weight, temperature, volume, data and much more
• Mortgage calculator · Monthly payment, interest and amortisation schedule
• Compound interest · How much your savings grow with regular contributions
• Split the bill · Split the bill and tip between friends
• BMI calculator · Body mass index with the WHO classification
• Roman numerals · Convert between Roman and Arabic numerals
• Numbers to words (Spanish) · Write amounts out in Spanish words, also in euros for cheques and invoices
• Random numbers and draws · Random numbers, dice, coin flips and name draws
• Stopwatch and timer · Stopwatch with laps and countdown with alarm
• Validate Spanish DNI/NIE and IBAN · Check the letter of a Spanish DNI or NIE, a CIF and any IBAN