Other Calculators

Turns any birthdate into an exact age down to the day.

Adds or subtracts days, weeks, or months from a starting date.

Adds and subtracts hours, minutes, and seconds across multiple entries.

Totals up hours worked between a start time and an end time.

Sums a full week of clock-in and clock-out entries into total payable hours.

Converts a time from one region straight into the local time of another.

Measures the exact span between two clock times or two full dates.

Counts the number of days between today and any date you choose.

Looks up which weekday any past or future date falls on.

Estimates cubic yards of concrete needed for a slab, footing, or column.

Sizes the heating or cooling output a room needs based on its dimensions.

Turns room measurements into total square footage for flooring or paint.

Figures out how many roofing squares and bundles a job will take.

Works out riser height and tread depth for a comfortable, code-friendly staircase.

Calculates how many tiles and boxes to buy for a floor or wall, with waste included.

Converts a garden bed's size and depth into bags or cubic yards of mulch.

Estimates tons of gravel needed to cover a driveway or path at a given depth.

Switches values between metric, imperial, and other common unit systems.

Converts height between feet-and-inches and centimeters instantly.

Solves for speed, distance, or time when the other two values are known.

Finds an object's density from its mass and volume, or solves for either.

Converts mass between grams, kilograms, pounds, and other common units.

Translates weight readings across pounds, stone, kilograms, and more.

Estimates gross domestic product using the standard expenditure approach.

Finds a solution's molar concentration from moles of solute and volume.

Adds up atomic weights from a chemical formula to get molecular mass.

Converts numbers to Roman numerals and back again in either direction.

Solves for voltage, current, or resistance from any two known values.

Reads a resistor's color bands and converts them into its resistance value.

Estimates voltage lost over a wire run based on gauge, length, and current.

Turns an appliance's wattage and runtime into an estimated dollar cost.

Breaks an IP address and CIDR mask down into network and host ranges.

Creates strong, random passwords with the length and character rules you set.

Estimates download or transfer time from file size and connection speed.

Convert text to Base64 or decode a Base64 string back to text, entirely in your browser.

Weighs course grades and credit hours into a single overall GPA.

Figures out the score needed on remaining work to hit a target grade.

Splits a bill and calculates the tip at any percentage across any group size.

Suggests bedtimes or wake times based on full 90-minute sleep cycles.

Converts band and bust measurements into an estimated bra size.

Matches shoe sizes across US, UK, EU, and other regional charts.

Turns a set of recent scores into an estimated golf handicap index.

Combines air temperature and wind speed into a real-feel chill reading.

Factors humidity into air temperature to show how hot it actually feels.

Calculates dew point from temperature and relative humidity readings.

Prices out a trip's total fuel cost from distance, efficiency, and gas price.

Works out miles per gallon from odometer readings and fuel added.

Tracks trip distance and mileage for reimbursement or budgeting purposes.

Estimates engine horsepower from quarter-mile trap speed and vehicle weight.

Converts torque and RPM figures into an engine's rated horsepower.

Compares two tire sizes to show the change in diameter and speedometer effect.

Rolls any number and combination of virtual dice for games and decisions.

A playful compatibility score generated from two names, just for fun.