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Everyday life, in numbers that make sense.

Choose a clear category, then a question. A ready-made example shows the result immediately, and every average can be edited.

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Search by your question: grade average, wallpaper rolls or due date.

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Money and shopping

Prices, discounts, tax, loans, savings, pay and travel costs.

%Percentage calculatorPercentage of a number, change, discount and reverse percentage.→¤Loan payment calculatorMonthly payment, total interest, fees and remaining balance by year.→↗Savings growth calculatorStarting balance, monthly deposits, interest earned and growth by year.→↓Discount, markup and original priceCalculate a sale price, savings, markup and the original price behind a known discount.→%VAT and sales tax calculatorAdd tax to a net price or separate tax from a tax-inclusive total.→⛽Trip fuel cost and cost per passengerEstimate fuel, total trip cost and cost per passenger in kilometres and litres or miles, US MPG and gallons.→¤Hourly, monthly and yearly salary converterConvert hourly pay into daily, weekly, monthly and yearly income, then include commuting time and work costs for a more realistic hourly figure.→÷Tip calculator and bill splitAdd a tip, split the full bill between people and see both the tip and total per person.→÷Unit price comparison calculatorEnter the known values and see an instant result with a clear explanation.→↗Compound growth calculatorEnter the known values and see an instant result with a clear explanation.→

School and mathematics

Clear help with school arithmetic, grades, ratios and geometry.

123Long arithmetic calculatorStep-by-step school arithmetic: column work, fractions, brackets, powers, carrying and borrowing.→√Root calculatorx · √ · ⁿ√→=Everyday calculatorA fast, keyboard-friendly calculator with memory, percentages and calculation history.→∶Ratio and proportion calculatorSolve a missing value in an equivalent ratio and see the scale factor behind the proportion.→x̄Average, median and range calculatorPaste a list of numbers to calculate the average, median, minimum, maximum, range and count with a real data chart.→✓Grade calculator for studentsTest percentage, simple and weighted grade averages, plus a future-grade planner.→%Probability and odds calculatorEnter the known values and see an instant result with a clear explanation.→△Triangle area and perimeter calculatorEnter the known values and see an instant result with a clear explanation.→○Circle area and circumference calculatorEnter the known values and see an instant result with a clear explanation.→

Dates and time

Age, intervals, food storage, pregnancy, world time and countdowns.

⌛Expiry date calculatorEggs, potatoes, cucumbers, meat and leftovers, with storage time adjusted for temperature.→♡Pregnancy due date calculatorDue date, current gestational age, and a week-by-week body and baby development timeline.→31Date calculatorDays between dates, working days and a date shifted forward or back.→◎Age calculatorExact age, total days, next birthday and the weekday you were born.→◷Time and work-hours calculatorTime between two moments, overnight shifts, breaks and time addition.→◷World clockExact local time and date in 31 countries.→✦New Year countdownLive countdown in each country’s local time.→◆National holiday countdownImportant national dates with a live local countdown.→

Units and converters

Length, weight, temperature, speed, fuel economy, recipes and downloads.

⇄Unit converterLength, area, mass, temperature, speed, volume and fuel consumption in one place.→↗Walking and running pace calculatorTurn distance and total time into pace per kilometre, pace per mile, speed and predicted finish times for popular race distances.→↗Speed, distance and time calculatorEnter the known values and see an instant result with a clear explanation.→⛽Fuel economy calculatorEnter the known values and see an instant result with a clear explanation.→◒Cooking measurement converterEnter the known values and see an instant result with a clear explanation.→↓Download time calculatorEnter the known values and see an instant result with a clear explanation.→

Planet, people and technology

Traceable data about humanity, nature, cities, connectivity, aviation and orbit.

◐Climate: 100 years and pathways to 2100Country observations and three CMIP6 climate pathways.→◉World populationEveryone ever born, each billion and the UN medium projection to 2100.→♡Life expectancyChange since 1950 across 24 countries and the world.→▥Urban growthUrban population shares and the UN projection to 2050.→♧World forestsForest loss and recovery by country since 1990.→✈Aircraft in the skyFive decades of passengers and an airborne aircraft estimate.→⌁The online worldInternet growth to six billion users and a 2050 scenario.→◌Satellites and orbitEvery year of the space age since the first satellite and a 2035 what-if.→♧Plants and oxygenHouseplants and trees in approximate numbers.→

Renovation and materials

Area, finishes and building mixtures—with waste allowance and shopping quantities.

▦Area, tile, paint and plasterFour core estimates on one page.→▥Wallpaper roll calculatorCalculate net wall area, reserve, rolls to buy, material left and total cost.→▤Flooring and laminate calculatorTurn room dimensions into packs to buy, purchased area, leftover material and budget.→▰Concrete volume and bag calculatorCalculate concrete volume, reserve, dry-mix bags and total material cost.→▦Wall insulation calculatorSubtract openings, add fitting reserve and see insulation packs, leftover area and cost.→⌑Baseboard and skirting calculatorCalculate room perimeter after doorways, reserve, full pieces to buy and total cost.→

Body, movement and healthy habits

This is an educational estimate, not a diagnosis or a personal medical recommendation.

♥Your body over a lifetimeHeartbeats, breathing, sleep, steps, water and food—from birth to today.→↟Steps and sittingSteps, distance, sitting time and the WHO activity reference—without 10,000-step magic.→◇Daily caloriesSleep, work, walking, exercise and chores.→○Air and breathingAir inhaled and carbon dioxide exhaled.→⌁Steps, distance and walking timeTurn daily steps into distance, weekly totals and walking time.→↗Weekly physical activityCombine moderate and vigorous activity and compare it with the WHO adult guideline.→◐Sleep duration and bedtime plannerCompare planned sleep with the CDC age range and calculate bedtime from wake time.→◎Adult BMI and weight rangeCalculate adult body mass index and see the weight range behind the result.→↻Sitting time and break plannerSee weekly sitting time and build a simple plan for movement breaks.→▰Bench press one-rep max calculatorWeight lifted · Repetitions · 1RM→◒Alcohol units calculatorServings · Volume per serving · ABV→

Appliance library

48 ready-made wattage examples

Choose an appliance, replace the sample wattage with its label value and add your tariff for a better estimate.

Browse appliance guides →

Electricity use by appliance

Choose a device, then edit wattage, hours and your tariff. Sample wattage is a starting point, not a specification for every model.

♨Space heater1,500 W→❄Air conditioner1,200 W→◈Gaming PC450 W→▣Refrigerator150 W→◒Water heater3,000 W→◉Washing machine1,000 W→◎Tumble dryer2,500 W→▭Television120 W→□Electric oven2,400 W→◇Dishwasher1,800 W→◌Dehumidifier500 W→↯Electric vehicle charger7,400 W→▤Microwave1,200 W→◡Electric kettle2,000 W→♨Coffee maker1,000 W→▥Toaster900 W→◉Blender500 W→◫Air fryer1,500 W→⌁Induction cooktop1,800 W→◒Rice cooker700 W→◓Slow cooker250 W→❄Freezer100 W→◜Vacuum cleaner900 W→◉Robot vacuum40 W→◢Iron2,000 W→≈Hair dryer1,800 W→═Hair straightener60 W→▣Desktop computer200 W→▰Laptop65 W→▭Computer monitor30 W→⌁Wi-Fi router12 W→◇Game console180 W→♫Sound system100 W→◉LED bulb10 W→●Incandescent bulb60 W→✣Ceiling fan70 W→✤Portable fan45 W→◌Humidifier30 W→↻Heat pump2,000 W→≈Pool pump1,100 W→↓Well pump750 W→⇣Sump pump500 W→✦Electric lawn mower1,400 W→▦Electric grill1,800 W→▱Bread maker600 W→▧Printer50 W→▯Phone charger10 W→▨Electric blanket100 W→

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Everyday tools

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Crypto services · 18+

Crypto can lose value. Check availability and rules in your country. This is advertising, not financial advice.

WWallet in TelegramA third-party crypto wallet opened through Telegram. Account checks and regional limits may apply.Open service ↗HHTX crypto platformCrypto trading service. Registration, identity checks and availability depend on your country.Open service ↗BBybit crypto platformCrypto trading service. Registration, identity checks and availability depend on your country.Open service ↗