Utility Calculators
Age, date, time, and everyday productivity tools.
Handy everyday tools for home improvement, electronics, productivity, and more — from concrete and tile estimates to Ohm's Law and password generation.
Age Calculator
Calculate exact age in years, months, and days.
Open Calculator →Age in Months Calculator
Find your exact age in total months, plus remaining days.
Open Calculator →Age in Days Calculator
Find exactly how many days you've been alive.
Open Calculator →Age Difference Calculator
Find the exact age gap between two people in years, months, and days.
Open Calculator →Date Calculator
Add or subtract days from a date, find days between dates, or look up a weekday and week number.
Open Calculator →Days Between Dates Calculator
Find the exact number of days, weeks, and months between any two dates.
Open Calculator →Business Days Calculator
Count weekdays between two dates, or add business days to a date.
Open Calculator →Add or Subtract Days from a Date
Add or subtract days, weeks, months, or years from a date.
Open Calculator →Weeks Between Dates Calculator
Find the exact number of weeks and leftover days between any two dates.
Open Calculator →Time Calculator
Add or subtract hours, minutes, and seconds.
Open Calculator →Hours Calculator
Calculate hours worked between two times.
Open Calculator →Time Zone Calculator
Convert time between time zones around the world.
Open Calculator →Time Card Calculator
Calculate weekly work hours and overtime pay.
Open Calculator →Password Generator
Generate strong, random, secure passwords.
Open Calculator →Subnet Calculator
Calculate IPv4 subnet mask, network, and host ranges.
Open Calculator →Stair Calculator
Calculate stair rise, run, and number of steps.
Open Calculator →Roofing Calculator
Estimate roofing materials and cost by square footage.
Open Calculator →Gas Mileage Calculator
Calculate fuel economy in MPG or L/100km.
Open Calculator →Concrete Calculator
Calculate concrete volume needed for slabs and footings.
Open Calculator →Fuel Cost Calculator
Calculate trip fuel cost based on distance and mileage.
Open Calculator →Wind Chill Calculator
Calculate the wind chill temperature.
Open Calculator →Bandwidth Calculator
Calculate file download/upload time from connection speed.
Open Calculator →Tile Calculator
Calculate how many tiles you need for a room.
Open Calculator →Voltage Drop Calculator
Calculate voltage drop across a wire run.
Open Calculator →BTU Calculator
Calculate BTUs needed to heat or cool a room.
Open Calculator →Square Footage Calculator
Calculate the square footage of a room or lot.
Open Calculator →Horsepower Calculator
Estimate horsepower from quarter mile time and weight.
Open Calculator →Ohm's Law Calculator
Calculate voltage, current, resistance, and power.
Open Calculator →Electricity Cost Calculator
Estimate the running cost of an electrical appliance.
Open Calculator →MEPCO Bill Checker
Check your MEPCO electricity bill online with your 14-digit reference number.
Open Calculator →Height Calculator
Predict a child's adult height from parents' heights.
Open Calculator →Lorem Ipsum Generator
Generate placeholder text for design mockups.
Open Calculator →JSON Formatter & Validator
Beautify, minify, and validate JSON instantly in your browser.
Open Calculator →Word Counter
Count words, characters, sentences, and paragraphs in your text.
Open Calculator →Frequently Asked Questions
Are the construction calculators (tile, concrete, roofing) precise enough for real projects?
They provide solid material estimates for planning purposes; always add a waste-factor buffer and confirm final quantities with your contractor or supplier.