日常

计算任意折扣百分比下的售价以及你节省的金额。

根据功率、每天使用小时数、天数和你的每千瓦时电价，计算电器以 kWh 计的耗电量及其运行成本。

根据你目前的成绩和考试权重，准确算出你在期末考试中需要取得多少分才能达到目标成绩。

按 5%、12%、18% 或 28% 加上或扣除 GST，并即时显示净额、所收 GST 和含税总额。

根据你的墙面面积、油漆每升的覆盖率和涂刷遍数，算出你需要多少升油漆。

根据长度和宽度，以平方英尺和平方米计算矩形房间或空间的面积，并可选地估算材料总成本。

算出小费、账单总额和每人金额——非常适合分摊餐厅账单。

计算任意尺寸的长宽比，并求取保持原始比例的缺失宽度或高度。

根据墙面面积和砖块尺寸（减去开洞面积）估算所需砖块和砂浆用量。

根据固定门幅宽度计算所需地毯面积和线米数，含匹配和余料损耗。

统计您每日咖啡习惯每周、每月和每年的实际花费。

为任意冲煮强度或杯数获取克数精确的咖啡与水比例。

根据长度、宽度和厚度（公制或英制单位）估算楼板所需的混凝土。得出以立方码和立方米计的体积，以及 40、60 和 80 磅袋装混凝土的数量。

根据总价格和份数计算每份餐食的成本。

根据价格和使用频率查看任何购买物品的真实每次使用成本。

投掷任意数量和面数的骰子（NdM），显示每颗骰子的点数及总计。

根据墙面和天花板面积计算房间所需的石膏板、螺钉、接缝填料和纸带数量。

Calculate arc length, radius, included angle and area of a circular arch from span and rise. For doorways, bridges and architectural arches.

Calculate how much asphalt (hot-mix) you need by weight and volume from area length, width and thickness. Supports metric and imperial.

Check if your bag meets airline weight limits. Enter bag weight, the airline allowance and the per-kg excess fee to see total charges.

Find out how long you can safely stay in the sun without burning, based on UV index, your Fitzpatrick skin type and sunscreen SPF.

将含税费和小费的账单平均分摊给任意人数。

根据厚度、宽度、长度和数量计算木材的板英尺数及总费用。

Convert BPM to note durations in milliseconds, find the Italian tempo marking, and get beat frequency in Hz for any music tempo.

Calculate how much salt to add to water for any brine concentration — perfect for pickling vegetables, lacto-fermentation, and curing.

Convert butter between US sticks, cups, tablespoons, teaspoons, grams, ounces, and pounds in one click.

计算步行、跑步、骑行或游泳需要多少分钟才能消耗指定的卡路里数。

根据房间地板面积推荐合适的吊扇叶片直径，并提供吊杆长度建议。

Calculate cement bags, sand and aggregate for any volume of concrete. Choose a standard mix grade (M10–M25) or enter a custom ratio to get material quantities instantly.

Calculate the required CFM airflow for any room using its dimensions and target air changes per hour (ACH).

Convert octal chmod digits (e.g. 755) to symbolic file permissions (rwxr-xr-x) and see what each bit means.

Calculate the chord length, sagitta, arc length and circular segment area from a circle radius and central angle.

Enter an IPv4 CIDR block (e.g. 10.0.0.0/8) to get its network range, host count and how many subnets of a chosen prefix fit inside it.

Calculate the exact grams of coffee grounds and ml of water for any brewing method — drip, espresso, French press, pour over, AeroPress or cold brew.

估算包括燃油、过路费和停车费在内的每日、每月和每年驾车通勤费用。

Add or subtract any number of days from a date to find a future or past date. Shows the day of week, weeks, and approximate months.

根据甲板尺寸、板材宽度和搁栅间距估算甲板板材、搁栅和紧固件数量。

Estimate how many diapers your baby needs and the total cost over any period, from a few weeks to a full year.

Calculate the volume and surface area of a torus (donut shape) from major radius R and minor radius r in any length unit.

通过图像像素和尺寸计算打印DPI，或计算清晰打印所需的像素数。

Calculate Defects Per Million Opportunities (DPMO), the Six Sigma sigma level, and process yield for quality analysis.

Find the exact date of Easter Sunday for any year from 1583 to 9999 using the Meeus/Jones/Butcher Gregorian algorithm.

Calculate your effective DPI (eDPI) by multiplying mouse DPI × in-game sensitivity, and find your cm/360° rotation distance.

Calculate how much epoxy resin and hardener to mix for any casting or tabletop project — enter mold dimensions, mix ratio and a waste allowance.

Calculate a building's Energy Use Intensity (EUI) in kBtu/sq ft/yr or kWh/m²/yr from annual electricity and gas use, with ENERGY STAR benchmark comparison.

Calculate how many yards or metres of fabric you need for any sewing or quilting project. Includes seam allowance, waste factor and bolt-width layout.

根据总长度和间距计算一段围栏所需的立柱、板材、横档和竖板。

Calculate the Exposure Value (EV) from your aperture, shutter speed and ISO — instantly see how your camera settings map to scene brightness.

通过长、宽、高将堆叠木垛转换为捆和面捆，并检查每捆价格。

Calculate flag height, area, diagonal and perimeter from the width and aspect ratio — useful for ordering fabric or making flags to correct proportions.

Calculate the exact nut-to-fret distance for any fret on a guitar, bass or other fretted instrument from the scale length.

根据距离、车辆效率和油价估算任何行程的燃油费用，并给出所需升数和每千米成本。

Calculate gas cost for any trip from distance, MPG or L/100 km, and fuel price — plus fuel needed and CO₂ emissions.

通过汇总所需电器的运行瓦数和启动瓦数，为备用发电机选型。

将节日或活动礼物预算公平地分配给名单上的每个人。

根据每门课程的绩点和学分时数计算你的平均绩点——在几秒内得出快速、准确的加权 GPA。

Calculate your weighted average grade from up to five assignments or exams. Enter each score and its percentage weight to get the final grade and letter grade instantly.

根据面积和推荐播种率计算新草坪或补种所需购买的草籽数量。

根据长度、宽度和深度计算你需要多少砾石或骨料——得出以 m³ 和 yd³ 计的体积、以公吨和美吨计的重量，以及成本。

Calculate how much grout you need for any tiled surface. Enter tile size, joint width, grout depth, and total area to get kg and bag counts with a waste allowance.

Check whether your vehicle is within its Gross Vehicle Weight Rating. Enter GVWR, curb weight, cargo and passengers to see remaining payload capacity and load percentage.

Calculate your GWA (General Weighted Average) for the Philippine academic system. Enter up to five subject grades (1.0–5.0 scale) and credit units to get your weighted average and honor standing.

Calculate GWAM (Gross Words A Minute) and NWAM (Net WPM) from keystrokes, test time and errors — with a speed-tier benchmark.

Calculate hours and minutes between a start time and an end time, with optional break deduction — gives decimal hours and H h MM min format.

将IPv4地址转换为32位十进制整数（及十六进制/二进制），或将整数转换回点分十进制格式。

Calculate your Kill/Death (K/D) ratio, KDA ratio and win rate — for any FPS, battle royale or MOBA game.

估算房间所需的强化地板或实木地板包数和地板条数，包含切割损耗余量。

根据袋装标注的NPK百分比，计算达到目标含氮量所需施用的肥料用量。

Calculate the LM317 output voltage from R1 and R2, or find R2 for a target output voltage — with minimum input voltage and power dissipation.

随机抽取彩票号码（如49选6），不重复，并带有可选的奖励球。

Calculate how many lumber boards you need for a deck, floor, or wall project, with a waste allowance and total cost estimate.

Convert any number of minutes to hours, seconds, days and weeks — and see the result in H h MM min format for timesheets and scheduling.

根据面积、瓷砖尺寸和接缝宽度估算贴砖工程所需的薄型砂浆和填缝剂。

Calculate how much cement, sand and water you need for a masonry mortar mix from area, joint depth and mix ratio.

Calculate miles per gallon (MPG) or L/100 km fuel economy, plus trip cost and cost per mile from distance and fuel used.

通过花坛长、宽和深度查找所需的立方码或袋装护根物数量，含袋数和体积。

Calculate how many boxes fit on a standard pallet, how many layers stack within a height limit, and the total loaded weight.

Calculate the even or odd parity bit for any binary word — shows the complete data word with its parity bit appended.

根据宾客数量和时长规划派对所需的食物、饮料和冰块采购量。

根据密码长度和字符集估算密码强度（熵位数）和近似破解时间。

生成强随机密码，并以熵位数衡量其强度。

根据露台面积和铺路石尺寸，计算所需铺路石数量及铺底沙用量。

Calculate the PERT expected task duration, standard deviation and confidence intervals from optimistic, most likely and pessimistic time estimates.

Calculate how many pizzas to order for any group size — choose appetite level, slices per pizza and an optional buffer for seconds.

Calculate pond volume in US gallons and litres for rectangular, oval or circular ponds, plus pump size and fish stocking capacity.

Calculate swimming pool volume in US gallons and litres, shock chlorine dose and filter pump size for rectangular, oval or circular pools.

根据分辨率和对角线尺寸，计算显示器的每英寸像素数和点距。

Calculate how much fabric you need for a quilt: top, backing and binding yardage from quilt size, block size, seam allowance and fabric width.

从参赛名单中随机抽取一名或多名获奖者，支持可选的加权票数。

Calculate usable capacity, storage efficiency, and fault tolerance for RAID 0, 1, 5, 6, 10, 50 and 60 arrays from disk count and disk size.

立即生成随机颜色并获取其HEX、RGB和HSL代码。

在你所选的任意范围内生成一个或多个随机整数——非常适合抽签、挑选、游戏、抽样和快速决策。

将名单随机打乱并分成规模均衡的随机队伍。

根据字数和阅读速度估算阅读一段文本所需的时间。

Calculate the weight of steel rebar (reinforcing bar) for construction. Enter the diameter, length and quantity to get weight per bar and total weight in kg.

通过将每种食材按所需份数缩放，即时将任意食谱翻倍、三倍或减半。

根据屋顶占地面积和坡度，估算屋顶覆盖平方数和瓦片捆数，包含屋脊和切割损耗。

根据房间面积、日照、层高和人数，计算空调或取暖器所需BTU容量。

Convert RPM to angular velocity (rad/s), frequency (Hz), period, and peripheral speed — for motors, engines, wheels, and fans.

Calculate the sag (mid-span deflection) and cable length of a wire or cable between two supports using the parabolic and catenary formulas.

Calculate how much sand you need by volume (m³, yd³) and weight (tonnes, kg) from area length, width and depth. Supports metric and imperial.

将屏幕的对角线尺寸和宽高比转换为实际宽度、高度和面积。

Estimate calories burned during sexual activity by body weight, duration and intensity, using MET values from Ainsworth's Compendium (2011).

Calculate how many squares of exterior siding you need from house dimensions, gables, openings and waste allowance. Supports metric and imperial.

计算覆盖草坪所需的草皮卷或托盘数量，包含修剪损耗量。

根据总高差计算楼梯踢板、踏板和斜梁长度，并检查2R+T舒适性规则。

Calculate stair riser height, tread going, stringer length and pitch angle from total rise and number of risers.

Calculate how many tonnes of decorative stone, pebbles or chippings you need by area and depth, with bag count and cost estimate.

输入IPv4地址和前缀（CIDR），获取网络地址、广播地址、可用主机范围、主机数量和子网掩码。

将所有流媒体和应用订阅费用汇总为每月和每年的总额。

Calculate sulfur (SO₂) emissions from burning coal, oil or diesel by entering the fuel mass and its sulfur content by weight.

Calculate the included taper angle, half-angle, taper per foot (or per 300 mm) and taper ratio from two diameters and a length.

Calculate pitch diameter, minor diameter, thread depth and lead angle for metric ISO and unified (UNC/UNF) screw threads.

根据房间面积和瓷砖尺寸算出地面需要多少块瓷砖，并为切割和破损预留损耗量。

根据面积和填充深度，估算花圃或草坪所需的表层土体积、重量和袋数。

估算含运营成本和残值的汽车或家电的完整拥有成本。

Calculate how US import tariffs raise the landed cost of goods — enter unit price, the applicable tariff rate, and quantity to get the total after-tariff price.

通过计时测试计算每分钟打字字数、净WPM和准确率。

通过每单位价格比较两款产品，找出更便宜的选择——破解误导性的包装规格，每次都挑出最超值的。

将可用性 SLA 百分比（如 99.9%）转换为每天、每周、每月和每年允许的停机时间。

Calculate the allowed downtime per year, month, week, and day for any uptime SLA percentage — from 90 % (one nine) to 99.9999 % (six nines).

根据房间尺寸、卷材规格和图案循环，计算所需墙纸卷数，并已考虑裁切和损耗。

Convert any number of weeks to days, hours, minutes, seconds, months and years instantly. Fractional weeks are supported.

根据给定高差计算坡道长度和坡度，并与 ADA 1:12 最大值进行比较。

让随机性来决定：以可调概率获得随机的「是」或「否」答案，并查看概率分布。