Lifestyle Tools
50 free online calculators — instant results, no sign-up
Bill SplitterSplit group expenses — who pays whomMobile Data Usage CalculatorEstimate monthly data by activityPhone Plan ComparisonCompare plans side by side — real monthly costDiscount CalculatorSale price, original price and discount rateTip CalculatorBill, tip percentage and per-person splitFuel Cost CalculatorConsumption, fuel price and trip costSize ConverterShoe & clothing sizes — US, EU, ChinaColor ConverterHEX, RGB and HSL conversionPassword GeneratorCustom length, character sets and strengthRent vs Buy CalculatorLong-term cost comparison for housing decisionsNEWGPA CalculatorGrade point average, weighted and cumulativeCalorie CounterIntake vs burn — net caloriesClothing Size CalculatorRecommended size from height and weightFinal Grade CalculatorScore needed on the final exam to reach your targetPet Age CalculatorCat & dog years to human yearsElectricity Cost CalculatorAppliance cost from power, hours and tariff with tiered pricingAir Conditioner Size CalculatorRoom size to HP, cooling capacity and summer costWedding Budget CalculatorAllocate a total budget across banquet, planner, rings and moreCommute Cost CalculatorMonthly and yearly commute cost by car, EV or metroTaxi Fare CalculatorFare estimate for Beijing/Shanghai/Guangzhou/ShenzhenLottery Odds CalculatorJackpot probability for Double Color Ball and Super LottoWallpaper CalculatorRolls needed with pattern waste and openings deductedShipping Cost CalculatorVolumetric weight vs actual weight, fee estimateOvertime Pay CalculatorChina 1.5×/2×/3× rates on 21.75 paid days52-Week Money ChallengeIncreasing, decreasing or flat savings plansEV vs Gas Cost Calculator10-year total cost of ownership comparisonRandom Name PickerDraw names without repeats — Fisher-Yates shuffleConcrete CalculatorVolume, mix ratio, cement/sand/gravelBrick CalculatorBricks and mortar per wall typeRebar Weight Calculatord²×0.00617, pieces per tonneStaircase Calculator2h+g comfort rule, slope checkPower Bank Capacity CalculatormAh to Wh, airline rules, real chargesRAID Capacity CalculatorRAID 0/1/5/6/10 usable space and fault toleranceCarry-on Luggage Checker3 airline standards, volumeID Photo Size Calculator12 specs, DPI pixel conversionProjector Distance CalculatorThrow ratio, size ↔ distanceMouse Sensitivity Converter7 games, cm/360CCTV Storage CalculatorBitrate/channels/days, HDD adviceHighway Toll CalculatorVehicle classes, ETC 5% offBaking ConverterCups ↔ grams, oven temps, pan scalingCurtain Fabric CalculatorPleat ratio, fixed-height/width boltsFish Tank CalculatorVolume, heater, filter, stocking densityPet Feeding CalculatorRER/DER energy, daily grams by kcalRenovation Budget CalculatorArea x tier · 5-part breakdownDiaper Usage CalculatorSize by age/weight · monthly costVIN Decoder17-char parse · year/origin · check digitGacha Pull ProbabilityPity math · expected pulls · spend estimateCost of Raising a ChildStage-by-stage · city tiers · breakdownUnit Price ComparisonFind the best-value packPizza Value CalculatorCompare deals by area