Directorio completo
157 herramientas. Un solo sitio.
21 herramientas tienen una versión española revisada. El resto aparece con la marca EN y abre su versión inglesa, para que siempre sepas qué idioma vas a encontrar.
Break-even Calculator
Find how many units you must sell to cover fixed and variable costs.
FinanzasBMI Calculator
Calculate adult body mass index and see the standard weight category.
Salud y fitnessCalorie Calculator
Estimate daily calories using the Mifflin–St Jeor equation and activity level.
Salud y fitnessMacro Calculator
Split daily calories into protein, carbohydrates, and fat targets.
Salud y fitnessBody Fat Calculator
Estimate body fat percentage using the U.S. Navy circumference method.
Salud y fitnessIdeal Weight Calculator
Compare several evidence-based adult ideal weight formulas.
Salud y fitnessWater Intake Calculator
Estimate a practical daily hydration target from weight and activity.
Salud y fitnessRunning Pace Calculator
Convert distance and finish time into pace and average speed.
Salud y fitnessPregnancy Due Date Calculator
Estimate a due date and current pregnancy week from the last period.
Salud y fitnessOvulation Calculator
Estimate the fertile window from cycle dates and average cycle length.
Salud y fitnessSleep Cycle Calculator
Find suggested bedtimes or wake times based on 90-minute sleep cycles.
Salud y fitnessPercentage Change Calculator
Measure percentage increase or decrease between two values.
MatemáticasFraction Calculator
Add, subtract, multiply, or divide two fractions and simplify the result.
MatemáticasRatio Calculator
Simplify ratios and scale both sides to a target value.
MatemáticasAverage Calculator
Find the mean, sum, count, minimum, and maximum of a number list.
MatemáticasMedian Calculator
Find the median, lower quartile, and upper quartile of a dataset.
MatemáticasStandard Deviation Calculator
Calculate population and sample standard deviation with variance.
MatemáticasQuadratic Formula Calculator
Solve real or complex roots of any quadratic equation.
MatemáticasPythagorean Theorem Calculator
Solve for any missing side of a right triangle.
MatemáticasArea Calculator
Calculate the area of rectangles, circles, triangles, and trapezoids.
MatemáticasVolume Calculator
Calculate volume for boxes, cylinders, spheres, and cones.
MatemáticasScientific Calculator
Evaluate common scientific expressions with trigonometric and logarithmic functions.
MatemáticasRandom Number Generator
Generate one or many cryptographically strong integers in a chosen range.
MatemáticasNumber Base Converter
Convert integers between binary, octal, decimal, and hexadecimal.
MatemáticasPrime Number Checker
Check whether an integer is prime and find its smallest factor.
MatemáticasDate Difference Calculator
Find the exact duration between two dates in multiple units.
Fecha y horaBusiness Days Calculator
Count weekdays between two dates with optional endpoint inclusion.
Fecha y horaDays Until Calculator
Count days, weeks, and hours until any future date.
Fecha y horaTime Duration Calculator
Calculate elapsed hours and minutes between two times.
Fecha y horaTime Zone Converter
Convert a date and time between popular IANA time zones.
Fecha y horaUnix Timestamp Converter
Convert Unix seconds or milliseconds to a human-readable date and back.
Fecha y horaCountdown Calculator
Create a live countdown to a selected date and time.
Fecha y hora