日常

計算任何百分比折扣下的特價與你所省下的金額。

根據功率、每日使用時數、天數與你的每 kWh 電價，計算電器以 kWh 為單位的耗電量及其運轉成本。

根據你目前的成績與考試權重，精確算出你的期末考須拿多少分才能達到目標成績。

以 5%、12%、18% 或 28% 加上或扣除 GST，立即顯示淨額、所收取的 GST 與含稅總額。

根據你的牆面面積、油漆每公升的覆蓋率與塗刷層數，算出你需要多少公升油漆。

依長度與寬度，計算長方形房間或空間的面積，以平方英尺與平方公尺表示，並可選擇加上材料總成本。

算出小費、總帳單與每人應付金額——非常適合分攤餐廳帳單。

計算任何尺寸的長寬比，並找出缺少的寬度或高度以保持比例。

根據牆面積和磚塊尺寸（扣除開口）估算牆壁所需的磚塊或砌塊數量及砂漿用量。

根據固定幅寬計算所需的地毯面積和線性公尺數，並計入花樣對齊和切割損耗。

計算您每日咖啡習慣在每週、每月和每年的實際花費。

根據任意沖泡濃度或杯數計算完美的咖啡與水的克重比例。

依板的長度、寬度與厚度，以公制或英制單位估算混凝土用量。取得以立方碼與立方公尺表示的體積，以及 40、60 與 80 磅袋的數量。

根據總價格和份數計算一份餐點的費用。

根據價格和使用頻率了解任何購買品的真實每次使用費用。

擲任意數量的任意面數骰子（NdM），查看每顆骰子的結果和總點數。

根據牆壁和天花板面積計算房間所需的石膏板、螺絲、接縫膠和膠帶用量。

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.

將包含稅金和小費的帳單在任意人數之間平均分攤。

根據木材的厚度、寬度、長度和數量計算板英尺和總費用。

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.

計算步行、跑步、騎車或游泳燃燒指定卡路里所需的分鐘數。

根據房間地板面積推薦合適的吊扇扇葉跨度，並提供吊桿長度建議。

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.

估算每天開車上班的日、月、年費用，包括燃油、過路費和停車費。

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.

根據露台尺寸、板材寬度和托梁間距估算所需的露台板材、托梁和緊固件數量。

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.

根據影像像素和尺寸計算列印DPI，或算出清晰列印所需的像素數。

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.

根據總長度和間距計算直線圍欄所需的柱子、板材、橫木和木條。

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

根據長度、寬度和高度將堆疊木柴轉換為繩（cord）和面繩（face cord），並查看每繩價格。

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.

根據距離、車輛效率與油價，估算任何行程的油費，並附所需公升數與每公里成本。

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

通過累計所有用電器的運行瓦數和啟動瓦數來確定備用發電機的尺寸。

在節日或活動禮品預算中，公平地分配給名單上的每個人。

從每門課的學分績點與學分時數計算你的平均學分績點——快速、精確，幾秒內算出加權 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.

根據面積和建議播種率，計算新草坪或補播所需購買的草種用量。

依長度、寬度與深度計算您需要多少碎石或砂石骨料 — 取得以 m³ 與 yd³ 表示的體積、以公噸與美噸表示的重量，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.

將IPv4位址轉換為32位元十進位整數（及十六進位/二進位），或將整數轉換回點分四組形式。

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

估算房間所需的強化木地板或實木地板包數和板材數量，包含切割損耗餘量。

根據肥料袋上的NPK百分比，計算達到目標氮素施用量所需的肥料用量。

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

隨機選取彩票號碼（如6選49），無重複，並可選加入額外獎球。

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.

根據面積、磚塊尺寸和縫隙寬度估算鋪磚工程所需的薄貼砂漿和填縫劑用量。

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.

根據花床長度、寬度和深度，計算所需的立方碼或袋數覆蓋物，包含袋數和體積。

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.

根據賓客人數和派對時長，規劃需購買的食物、飲料和冰塊數量。

根據密碼長度和字元集，估算密碼強度（位元熵）和大概的破解時間。

生成強隨機密碼，並以位元熵衡量其強度。

根據面積和地磚尺寸，計算鋪設露台或小路所需的地磚數量及鋪底砂用量。

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.

根據解析度和對角線尺寸，計算螢幕的每英寸像素數和點距。

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

從參賽名單中抽取一名或多名隨機得獎者，支援加權票數選項。

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.

即時生成隨機顏色，並獲取其HEX、RGB和HSL代碼。

在你所選的任意範圍內產生一個或多個隨機整數——非常適合抽獎、挑選、遊戲、抽樣與快速決策。

將名單隨機打亂，分成大小幾乎相等的均衡隊伍。

根據字數和閱讀速度，估算閱讀一段文字所需的時間。

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.

立即將任何食譜的每種食材換算成您所需的份量。

根據屋頂面積和坡度，估算所需的屋面平方碼數和瓦片包數，含脊頂和切割廢料的損耗。

根據房間面積、日照、天花板高度和人數，計算所需的冷暖氣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.

將螢幕的對角線尺寸和長寬比轉換為實際寬度、高度和面積。

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.

計算覆蓋草坪所需的草皮卷或托盤數量，包含修剪損耗允量。

根據總高差計算樓梯踢板、踏板和斜樑長度，並檢查2R+T舒適法則。

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.

輸入IPv4位址和前綴（CIDR）即可獲取網路位址、廣播位址、可用主機範圍、主機數量和子網路遮罩。

將您所有的串流和應用程式訂閱費用匯總為每月和每年的總金額。

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.

根據房間面積與磁磚尺寸算出你需要多少片磁磚，並含切割與破損的損耗預留。

根據面積和填充深度，估算花圃或草坪所需的表土體積、重量和袋數。

估算包含運行費用和殘值的汽車或電器全生命週期擁有成本。

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.

從計時測試中計算每分鐘字數、淨WPM和準確率。

以每單位價格比較兩項產品，找出較划算的選擇——破解誤導性的包裝大小，每次都挑到最佳價值。

將可用性 SLA 百分比（如 99.9%）轉換為每日、每週、每月及每年允許的停機時間。

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

根據房間尺寸、卷材規格和花樣循環計算所需壁紙卷數，並已計入裁切損耗。

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

根據指定的坡升計算坡道長度和坡度，並依 ADA 1:12 最大值進行驗證。

讓機率來決定：以可調整的機率獲得隨機的「是」或「否」答案，並查看機率分布。