Everyday
Handy references and helpers for daily life: country and calling codes, test tones and other things you need to look up now and then.
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Utilities
- Airline codesFind any airline by its IATA or ICAO code, radio call sign or name: both codes, call sign, country and whether it still flies., private, runs on your deviceAviationReferenceFlying
- Airport codesFind any airport by its IATA or ICAO code, name or city: codes, location, elevation and scheduled service., private, runs on your deviceAviationReferenceFlying
- Area of shapesArea and perimeter of rectangles, circles, triangles and eight more shapes, drawn to scale., private, runs on your deviceMath & numbersCalculatorGeometryAreaMetricImperial
- Battery sizesEvery common battery size, from AAA to D, 9 V, CR2032 and LR44 button cells to 18650: dimensions, voltage, IEC names and equivalents., private, runs on your deviceElectronics & cablingReferenceLength
- Concrete calculatorCubic metres or yards of concrete and bags of pre-mix for a slab, a footing or post holes., private, runs on your deviceCalculatorVolume & capacityMetricImperial
- Country codesISO 3166 alpha-2, alpha-3 and numeric codes, calling codes and domains of 249 countries and territories., private, runs on your deviceReferenceNetworks
- Currency codesEvery currency in use today with its ISO 4217 code, numeric code, symbol, decimals and the countries that use it, in your language., private, runs on your deviceMoney & financeReferenceCurrency
- Dashboard warning lightsFind a car warning light by its symbol or name: what it means, how urgent it is by colour, and what to do now., private, runs on your deviceVehiclesReference
- Dew point calculatorFind the dew point from temperature and humidity, or the humidity from the dew point., private, runs on your deviceEarth & weatherCalculatorWeatherTemperature
- Dice rollerRoll one die or a handful, d20 or 3d6+2, with fair results you can see on the whole screen., private, runs on your deviceGenerator
- Discount calculatorSee the sale price and how much you save., private, runs on your deviceCalculatorCostsCurrency
- Flight arrival timeThe local landing time from the departure time and the hours in the air, across time zones, daylight saving time and the date line., private, runs on your deviceCalculatorFlying
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- Flight delay compensationCheck EU 261 and UK 261: €250–600 or £220–520 for a late, cancelled or overbooked flight, with the reason., private, runs on your deviceAviationCalculatorFlyingDistance
- Fuel cost calculatorWork out the fuel and the cost of a trip from distance, consumption and fuel price., private, runs on your deviceCalculatorCostsDistance
- Laundry symbolsEvery care-label symbol decoded: wash tub, triangle, square, iron and circle, with temperatures, dots and bars explained in plain words., private, runs on your deviceReferenceTemperature
- Leave-by time calculatorThe latest time to set off: your arrival time minus the journey, the stops on the way and a safety margin, also across time zones., private, runs on your deviceCalculatorDistance
- LED bulb savings calculatorCompare an old bulb with an LED: the energy and money saved a year and how soon the LED pays for itself., private, runs on your deviceCalculatorCostsEnergySavings
- Luggage size checkerCheck a bag's height, width, depth and weight against any size limit, with the total L + W + H, a box drawing and centimetres or inches., private, runs on your deviceCalculatorFlyingLengthWeightVolume & capacity
- Paint calculatorLitres or gallons of paint and whole cans to buy, from the room's size, the coats and the coverage on the tin., private, runs on your deviceCalculatorAreaVolume & capacityMetricImperial
- Pet age calculatorYour dog's or cat's age in human years from today's science, not the old ×7 rule, plus its life stage., private, runs on your deviceCalculatorConverter
- Prize wheelList your prizes, spin the wheel and give them out one by one: a fair draw for raffles, parties and events., private, runs on your deviceGenerator
- Random name pickerSpin the wheel to pick winners from your list, or split everyone into fair teams., private, runs on your deviceGenerator
- Random numberFair random numbers from your device's secure generator, with or without repeats., private, runs on your deviceGeneratorStatistics
- Split billDivide one bill by uneven shares, down to the last cent, with shares that always add up., private, runs on your deviceCalculatorCostsCurrency
- Tailpipe CO₂ calculatorGrams of CO₂ per kilometre or mile, and kilograms a year, from what your petrol or diesel car burns., private, runs on your deviceVehiclesCalculatorEnergyDistance
- Tile calculatorTiles and boxes, flooring packs or wallpaper rolls for a floor or wall, with extra for cuts and waste., private, runs on your deviceCalculatorAreaMetricImperial
- Tip calculatorAdd a tip to the bill and split the total between people, exact to the cent., private, runs on your deviceCalculatorCostsCurrency
- Tipping by countryRestaurant, taxi and hotel tipping customs by country, from official tourism pages, with the tip and total for your bill., private, runs on your deviceCalculatorReferenceCosts
- Tone GeneratorPlay a test tone from 1 Hz to 20 kHz and see its note, period and wavelength., private, runs on your devicePhysicsGeneratorSoundFrequencies
- Volume of solidsVolume and surface area of boxes, cylinders, spheres, cones and seven more solids, in litres and gallons too., private, runs on your deviceMath & numbersCalculatorGeometryVolume & capacityMetricImperial
- Wind chill and heat indexThe feels-like temperature: wind chill in the cold, heat index in the heat., private, runs on your deviceEarth & weatherCalculatorWeatherTemperature
These are the small lookups and helpers that come up in daily life, each with a short explanation of where the data comes from.
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