Other Calculators
77 calculatorsEveryday tools for dates, times, conversions, and miscellaneous calculations.
77 calculators available
Dates & Time(9)↑ top
Age Calculator
Calculate your exact age in years, months, weeks, and days.
Date Calculator
Perform precise date arithmetic: add/subtract days, weeks, m…
Day Counter Calculator
Calculate total days, weekdays, or business days between two…
Day of the Week Calculator
Calculate the day of the week for any date using Zeller's Co…
Hours Calculator
Calculate durations between times or add/subtract time segme…
Time Calculator
Perform arithmetic operations on time values, calculate dura…
Time Card Calculator
Calculate total work hours, regular vs. overtime hours, and …
Time Duration Calculator
Calculate the elapsed time between two dates and times, or a…
Time Zone Calculator
Convert date and time between any two time zones worldwide w…
Cooking(10)↑ top
Air Fryer Converter
Convert traditional oven cooking times and temperatures to a…
BBQ Smoker Time Calculator
Estimate cooking time for smoked meats based on type, weight…
Coffee Brewing Ratio Calculator
Calculate precise coffee-to-water ratios for pour-over, Fren…
Homebrew ABV Calculator
Calculate alcohol by volume, apparent attenuation, ABW, and …
Meat Roasting Time Calculator
Calculate precise roasting times and target internal tempera…
Metric ↔ Imperial Converter
Convert between metric and imperial units for weight, volume…
Pizza Dough Calculator
Calculate precise pizza dough ingredients using baker's perc…
Recipe Scaler
Scale any recipe to any serving size. Adjust ingredient quan…
Sourdough Bread Calculator
Calculate sourdough bread ingredients using baker's percenta…
Water Boiling Point at Altitude Calculator
Calculate the boiling point of water at any elevation for hi…
Conversions(12)↑ top
Bandwidth Calculator
Calculate required network bandwidth based on number of user…
Conversion Calculator
Convert between various units of measurement such as length,…
Density Calculator
Calculate density, mass, or volume using Ï = m/V. Supports …
Electricity Calculator
Calculate voltage, current, resistance, power, and energy us…
Fuel Cost Calculator
Calculate fuel expenses for trips based on distance, efficie…
Gas Mileage Calculator
Calculate your vehicle's fuel efficiency in MPG or L/100km.
Mass Calculator
Convert between metric and imperial mass units instantly — k…
Mileage Calculator
Estimate trip distance, fuel consumption, estimated fuel cos…
Molecular Weight Calculator
Calculate the molecular weight (molar mass) of chemical comp…
Shoe Size Conversion Calculator
Convert shoe sizes between US, UK, European, Mondopoint, and…
Speed Calculator
Calculate speed, distance, or time using the fundamental mot…
Weight Calculator
Convert between all common mass and weight units including k…
Utilities(4)↑ top
Base64 Encode / Decode
Convert text or binary data to Base64 encoding and decode Ba…
Dice Roller
Simulate dice rolls for tabletop games, statistics experimen…
Password Generator
Generate cryptographically strong random passwords with conf…
URL Encode / Decode
Encode or decode text using URL percent-encoding (RFC 3986).…
Other(14)↑ top
Bra Size Calculator
Determine your correct bra size using precise band and bust …
Dew Point Calculator
Calculate dew point temperature from air temperature and rel…
GDP Calculator
Calculate GDP using the expenditure approach (C + I + G + X …
Golf Handicap Calculator
Calculate golf handicap index using USGA rules for fair play…
GPA Calculator
Convert letter grades to GPA using the standard 4.0 scale an…
Grade Calculator
Calculate final grades from weighted components. Determine t…
Heat Index Calculator
Calculate heat index to assess danger from high temperature …
Height Calculator
Predict a child's adult height based on parental heights usi…
Molarity Calculator
Calculate solution molarity, mass, volume, and perform dilut…
Roman Numeral Converter
Convert between Arabic and Roman numerals in both directions…
Sleep Calculator
Calculate optimal bedtimes and wake-up times based on 90-min…
Tip Calculator
Calculate tip amounts, total bills, and split costs evenly a…
Tire Size Calculator
Compare tire sizes with detailed outputs including diameter,…
Wind Chill Calculator
Calculate wind chill temperature and frostbite risk from air…
Home Improvement(13)↑ top
BTU Calculator
Estimate the heating or cooling capacity needed for a room i…
Concrete Calculator
Calculate the volume and weight of concrete needed for your …
Drywall Calculator
Estimate drywall sheets needed for walls and ceilings. Calcu…
Fence Calculator
Estimate fence materials for any property line. Calculates p…
Flooring Calculator
Estimate flooring material quantities for any room. Calculat…
Gravel Calculator
Estimate gravel volume and tonnage for driveways, drainage, …
Mulch Calculator
Estimate mulch volume and number of bags required for landsc…
Paint Calculator
Estimate interior paint quantities for any room. Calculates …
Roofing Calculator
Estimate roofing material quantities (squares, bundles) and …
Solar Panel Calculator
Size a solar panel system for your home. Estimates system si…
Square Footage Calculator
Calculate area in square feet, meters, or yards for standard…
Stair Calculator
Calculate stair layout values—number of steps, riser height,…
Tile Calculator
Estimate tile quantities and total cost for flooring or wall…
Developer Tools(9)↑ top
Case Converter
Convert text between camelCase, PascalCase, snake_case, keba…
Color Converter
Convert colors between Hex, RGB, HSL, and HSV color formats …
Cron Expression Parser
Parse cron expressions and calculate next run times. Support…
IP Subnet Calculator
Calculate subnet ranges, broadcast addresses, and CIDR notat…
JSON Formatter & Validator
Format, validate, and minify JSON data instantly. Supports p…
JWT Decoder
Decode JWT tokens to inspect header and payload. View the al…
Regex Tester
Test regular expressions against text. Match and replace pat…
Timestamp Converter
Convert between Unix timestamps and human-readable dates. Su…
UUID Generator
Generate UUIDs (v4 and v7) instantly in your browser. Suppor…
Physics & Engineering(5)↑ top
Engine Horsepower Calculator
Calculate engine horsepower from torque and RPM measurements…
Horsepower Calculator
Convert torque and RPM to horsepower. Valid for internal com…
Ohms Law Calculator
Compute voltage, current, resistance, or power using Ohm's L…
Resistor Calculator
Decode resistor color bands to determine resistance value, t…
Voltage Drop Calculator
Calculate voltage drop in electrical circuits based on wire …
Fun(1)↑ top
Frequently Asked Questions
- How do I calculate the number of days between two dates?
- Use our date calculator to find the exact number of days, months, and years between any two dates. It accounts for leap years and different month lengths automatically.
- What is the difference between UTC and GMT?
- GMT (Greenwich Mean Time) is a time zone, while UTC (Coordinated Universal Time) is a time standard. In practice they are used interchangeably, but UTC is the more precise scientific standard used globally.
- How do you convert between Fahrenheit and Celsius?
- To convert Fahrenheit to Celsius, subtract 32 and multiply by 5/9. To convert Celsius to Fahrenheit, multiply by 9/5 and add 32. Our conversion calculator handles this and many other unit conversions instantly.