📅 Date & Time Calculators

Calculate days between dates, age, time zones, and date differences

Date Calculator

Calculate days between dates, add or subtract days, and find specific dates.

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Age Calculator

Calculate exact age in years, months, days, hours, and minutes.

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Time Calculator

Add, subtract, and convert time values in hours, minutes, and seconds.

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Time Zone Calculator

Convert times between different time zones worldwide.

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Hours Calculator

Calculate hours and minutes between two times.

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Military Time Converter

Convert between 12-hour and 24-hour military time formats.

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Countdown Calculator

Count down to important dates and events.

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Work Hours Calculator

Calculate total work hours and overtime pay.

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🏗️ Housing & Building Calculators

Calculate materials for construction, renovation, and home improvement projects

Concrete Calculator

Calculate concrete volume needed for slabs, footings, columns, and stairs.

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Paint Calculator

Calculate paint needed for walls, ceilings, and rooms with multiple coats.

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Tile Calculator

Calculate tiles needed for floors, walls, and various room layouts.

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Flooring Calculator

Calculate flooring materials for hardwood, laminate, and vinyl.

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Carpet Calculator

Calculate carpet square footage and installation costs.

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Roofing Calculator

Calculate shingles and roofing materials needed.

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Brick Calculator

Calculate bricks and mortar needed for walls.

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Deck Calculator

Calculate lumber and materials for deck construction.

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Fence Calculator

Calculate fencing materials and posts needed.

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Gravel Calculator

Calculate gravel, sand, or stone needed for projects.

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Mulch Calculator

Calculate mulch needed for landscaping and garden beds.

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Insulation Calculator

Calculate insulation R-value and material requirements.

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🛠️ Everyday Utility Calculators

Practical calculators for daily use, shopping, tips, and random number generation

Electricity Cost Calculator

Calculate electricity consumption and monthly power bill costs.

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Tip Calculator

Calculate tips and split bills among multiple people.

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Random Number Generator

Generate random numbers within specified ranges.

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Password Generator

Generate strong, secure passwords with custom criteria.

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QR Code Generator

Create QR codes for URLs, text, and contact information.

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Bill Split Calculator

Split bills and expenses among friends.

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Shopping Price Calculator

Compare prices, calculate bulk savings, and unit prices.

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GPA Calculator

Free GPA Calculator - Calculate your Grade Point Average for high school or college. Supports 4.0 and 5.0 scales with detailed grade breakdown.

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Grade Calculator

Free Grade Calculator - Calculate your final grade, required scores, and weighted grades. Perfect for students and educators tracking academic performance.

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🌐 Internet & Computing Calculators

Calculate bandwidth, download time, data usage, and network performance

Bandwidth Calculator

Calculate network bandwidth and data transfer requirements.

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Download Time Calculator

Calculate download time based on file size and internet speed.

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Data Usage Calculator

Calculate monthly data usage for streaming, browsing, and downloads.

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Video Streaming Calculator

Calculate bandwidth needed for video streaming at various qualities.

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IPv4 Subnet Calculator

Calculate subnet masks, network addresses, and host ranges.

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File Size Converter

Convert between bytes, KB, MB, GB, TB, and other file sizes.

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⛅ Weather Calculators

Convert temperatures, calculate heat index, wind chill, and dew point

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin.

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Wind Chill Calculator

Calculate apparent temperature with wind chill factor.

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Heat Index Calculator

Calculate apparent temperature accounting for humidity.

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Dew Point Calculator

Calculate dew point from temperature and humidity.

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Humidity Calculator

Calculate relative humidity and absolute humidity.

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🚗 Transportation Calculators

Calculate fuel consumption, mileage, travel costs, and trip planning

Fuel Cost Calculator

Calculate fuel costs for trips based on distance and gas prices.

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Gas Mileage Calculator

Calculate MPG and fuel efficiency for your vehicle.

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Trip Cost Calculator

Calculate total travel costs including gas, tolls, and food.

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Distance Calculator

Calculate distance between cities and locations.

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Travel Time Calculator

Calculate travel time based on distance and speed.

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Boat Fuel Calculator

Calculate fuel consumption for boats and marine vessels.

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Fuel Economy Calculator

Free Fuel Economy Calculator - Calculate MPG, L/100km, and fuel efficiency. Track your vehicle's gas mileage and fuel costs.

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📏 Measurements & Unit Converters

Convert between various units of measurement for length, weight, volume, and more

Unit Converter

Convert length, weight, volume, temperature, and more between units.

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Area Converter

Convert between square meters, square feet, acres, hectares, and more.

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Volume Converter

Convert between liters, gallons, cubic meters, and other volume units.

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Speed Converter

Convert between mph, km/h, m/s, knots, and other speed units.

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Length Converter

Convert between meters, feet, inches, miles, kilometers, and more.

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Weight Converter

Convert between kilograms, pounds, ounces, grams, and tons.

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Pressure Converter

Convert between PSI, bar, pascal, and atmospheric pressure.

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Energy Converter

Convert between joules, calories, BTU, and kilowatt-hours.

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Power Converter

Convert between watts, horsepower, and BTU per hour.

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Cooking Measurements

Convert between cups, tablespoons, teaspoons, and metric units.

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⚡ Electronics & Circuits Calculators

Calculate resistance, voltage, current, power, and electronic component values

Ohm's Law Calculator

Calculate voltage, current, resistance, and power using Ohm's law.

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LED Resistor Calculator

Calculate current limiting resistor for LEDs.

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Voltage Divider Calculator

Calculate output voltage for resistor voltage dividers.

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Battery Life Calculator

Calculate battery runtime based on capacity and load.

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Resistor Color Code Calculator

Decode resistor color bands to find resistance values.

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Capacitor Calculator

Calculate capacitance, reactance, and charge storage.

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Inductor Calculator

Calculate inductance and inductive reactance.

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Wire Gauge Calculator

Calculate wire size for current carrying capacity.

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🎮 Entertainment & Fun Calculators

Fun and entertaining calculators for games, love, life expectancy, and more

Love Calculator

Calculate love compatibility between two people (just for fun!).

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Life Expectancy Calculator

Estimate life expectancy based on lifestyle and health factors.

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Dog Age Calculator

Convert dog age to human years accurately.

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Cat Age Calculator

Convert cat age to human years.

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Lottery Calculator

Generate random lottery numbers for your favorite games.

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Dice Roller

Roll virtual dice for games and probability experiments.

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Coin Flip

Flip virtual coins for decisions and probability.

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Zodiac Sign Calculator

Find your zodiac sign and astrological information.

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Chinese Zodiac Calculator

Find your Chinese zodiac animal sign.

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