Todas las herramientas

Calculadora de préstamos

Introduce capital, tipo anual y plazo para ver la cuota fija. La fórmula de anualidad es la misma en todos los idiomas.

Calculadora de sueldo neto

Introduce el bruto y un tipo efectivo. El motor multiplica; no aplica tramos UK ni IRPF.

Calculadora de IVA (UK)

Introduce un importe neto o bruto y un tipo de IVA británico. Los tipos siguen las categorías UK, no el calendario de otro país.

Calculadora de interés compuesto

Enter starting principal, annual rate, years and compounding frequency to see the future value and interest earned.

Calculadora de ROI

Enter cost and gain (or final value) to see return on investment as a percentage. Optional holding period supports a simple annualised figure.

Calculadora de margen

Introduce ingresos y coste para ver el margen y el markup. Los dos porcentajes no son intercambiables.

Calculadora de porcentajes

Three common percentage jobs on one page: part of a whole, reverse percentage, and change between two numbers.

Conversor de divisas

Pick two currencies and an amount. The rate comes from the public mid-market source used by the tool, not from a card issuer or bureau.

Calculadora de IMC

Enter height and weight to see adult BMI and the usual category band. BMI does not measure fat, fitness or health on its own.

Formateador JSON

Paste JSON to pretty-print or minify it. The parser runs in your browser so the document does not need to leave the device for this task.

Generador de contraseñas

Choose length and character classes. The generator draws from the browser’s cryptographic random source when available.

Unir PDF

Add two or more PDFs and download a single file. Prefer on-device merge for confidential documents; read the on-page note for this build.