[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"tool-content:en:timer":3,"glossary:en":56,"published-tools-en":106},{"id":4,"documentId":5,"slug":6,"intro":7,"howTo":8,"longContent":9,"createdAt":10,"updatedAt":11,"publishedAt":12,"locale":13,"name":14,"faq":15,"examples":40,"category":41,"seo":50,"localizations":55,"metaTitle":52,"metaDescription":53},305,"j11x6gqrh0wxlbtyfwgorad7","timer","\u003Cp>A \u003Cstrong>5 minute timer\u003C\u002Fstrong> is loaded the moment this page opens, so a countdown of \u003Cstrong>300 seconds\u003C\u002Fstrong> takes one click on Start. Nine presets from \u003Cstrong>1 to 60 minutes\u003C\u002Fstrong> cover the lengths asked for most often, while the three fields above the ring accept any duration up to \u003Cstrong>24 hours\u003C\u002Fstrong>. The count runs against an end time read from the system clock instead of ticking down on its own, which keeps a hidden tab accurate to the second. At zero the panel turns red and a two-tone alarm sounds for up to a minute.\u003C\u002Fp>","\u003Col>\n\u003Cli>Click a preset such as 5 min or 10 min to load the duration and start the count in the same click. For another length, type the hours, minutes and seconds into the three fields above the ring.\u003C\u002Fli>\n\u003Cli>Press Start. The time left shows inside the ring, where Pause freezes the count and Resume picks it up from the exact second it stopped.\u003C\u002Fli>\n\u003Cli>At zero the panel turns red, the tab title blinks 00:00 and a two-tone alarm repeats for up to 60 seconds. Press Stop alarm to cut it short. Uncheck the sound box before starting for a silent finish.\u003C\u002Fli>\n\u003Cli>Copy the address to hand someone the same timer. \u002Fdate\u002Ftimer?minutes=10 opens a 10 minute timer with the duration already in the fields.\u003C\u002Fli>\n\u003C\u002Fol>","\u003Ch2 id=\"set-a-timer-for-5-minutes\">How do you set a timer for 5 minutes?\u003C\u002Fh2>\n\u003Cp>The page opens with \u003Cstrong>05:00\u003C\u002Fstrong> in the fields, so a \u003Cstrong>5 minute timer\u003C\u002Fstrong> starts on a single click and a timer 5 minutes long needs no typing at all. Any other length goes into the three boxes above the ring: hours take 0 to 24, minutes take 0 to \u003Cstrong>1440\u003C\u002Fstrong> and seconds take 0 to 59.\u003C\u002Fp>\n\u003Cp>Clicking one of the preset chips under the fields loads the duration and launches the count in the same gesture, which matters when the water is already boiling. Clicking a second chip mid-run restarts the count on the new duration, while the three boxes stay locked from Start until Reset, so a half-typed value never gets counted down.\u003C\u002Fp>\n\n\u003Ch2 id=\"preset-links\">Is there a 1 minute timer or a 10 minute timer?\u003C\u002Fh2>\n\u003Cp>Nine lengths sit under the fields at 1, 3, \u003Cstrong>5\u003C\u002Fstrong>, 10, 15, 20, 30, 45 and \u003Cstrong>60 minutes\u003C\u002Fstrong>, one click each. Every chip carries its length in the address, so a duration can be bookmarked, pinned to a task list or dropped into a message. The 5 minutes timer sits at \u003Ccode>\u002Fdate\u002Ftimer?minutes=5\u003C\u002Fcode> and the twenty minute one at \u003Ccode>\u002Fdate\u002Ftimer?minutes=20\u003C\u002Fcode>. The same pattern holds for any value the minutes field accepts.\u003C\u002Fp>\n\u003Ctable>\n\u003Cthead>\u003Ctr>\u003Cth>Duration\u003C\u002Fth>\u003Cth>Direct link\u003C\u002Fth>\u003Cth>Shows as\u003C\u002Fth>\u003C\u002Ftr>\u003C\u002Fthead>\n\u003Ctbody>\n\u003Ctr>\u003Ctd>1 minute\u003C\u002Ftd>\u003Ctd>\u003Ca href=\"\u002Fdate\u002Ftimer?minutes=1\">\u002Fdate\u002Ftimer?minutes=1\u003C\u002Fa>\u003C\u002Ftd>\u003Ctd>01:00\u003C\u002Ftd>\u003C\u002Ftr>\n\u003Ctr>\u003Ctd>3 minutes\u003C\u002Ftd>\u003Ctd>\u003Ca href=\"\u002Fdate\u002Ftimer?minutes=3\">\u002Fdate\u002Ftimer?minutes=3\u003C\u002Fa>\u003C\u002Ftd>\u003Ctd>03:00\u003C\u002Ftd>\u003C\u002Ftr>\n\u003Ctr>\u003Ctd>5 minutes\u003C\u002Ftd>\u003Ctd>\u003Ca href=\"\u002Fdate\u002Ftimer?minutes=5\">\u002Fdate\u002Ftimer?minutes=5\u003C\u002Fa>\u003C\u002Ftd>\u003Ctd>05:00\u003C\u002Ftd>\u003C\u002Ftr>\n\u003Ctr>\u003Ctd>10 minutes\u003C\u002Ftd>\u003Ctd>\u003Ca href=\"\u002Fdate\u002Ftimer?minutes=10\">\u002Fdate\u002Ftimer?minutes=10\u003C\u002Fa>\u003C\u002Ftd>\u003Ctd>10:00\u003C\u002Ftd>\u003C\u002Ftr>\n\u003Ctr>\u003Ctd>15 minutes\u003C\u002Ftd>\u003Ctd>\u003Ca href=\"\u002Fdate\u002Ftimer?minutes=15\">\u002Fdate\u002Ftimer?minutes=15\u003C\u002Fa>\u003C\u002Ftd>\u003Ctd>15:00\u003C\u002Ftd>\u003C\u002Ftr>\n\u003Ctr>\u003Ctd>20 minutes\u003C\u002Ftd>\u003Ctd>\u003Ca href=\"\u002Fdate\u002Ftimer?minutes=20\">\u002Fdate\u002Ftimer?minutes=20\u003C\u002Fa>\u003C\u002Ftd>\u003Ctd>20:00\u003C\u002Ftd>\u003C\u002Ftr>\n\u003Ctr>\u003Ctd>30 minutes\u003C\u002Ftd>\u003Ctd>\u003Ca href=\"\u002Fdate\u002Ftimer?minutes=30\">\u002Fdate\u002Ftimer?minutes=30\u003C\u002Fa>\u003C\u002Ftd>\u003Ctd>30:00\u003C\u002Ftd>\u003C\u002Ftr>\n\u003Ctr>\u003Ctd>45 minutes\u003C\u002Ftd>\u003Ctd>\u003Ca href=\"\u002Fdate\u002Ftimer?minutes=45\">\u002Fdate\u002Ftimer?minutes=45\u003C\u002Fa>\u003C\u002Ftd>\u003Ctd>45:00\u003C\u002Ftd>\u003C\u002Ftr>\n\u003Ctr>\u003Ctd>60 minutes\u003C\u002Ftd>\u003Ctd>\u003Ca href=\"\u002Fdate\u002Ftimer?minutes=60\">\u002Fdate\u002Ftimer?minutes=60\u003C\u002Fa>\u003C\u002Ftd>\u003Ctd>1:00:00\u003C\u002Ftd>\u003C\u002Ftr>\n\u003C\u002Ftbody>\n\u003C\u002Ftable>\n\n\u003Ch2 id=\"background-tab\">Does the timer keep running in a background tab?\u003C\u002Fh2>\n\u003Cp>It does, down to the second. The page notes the clock time at which the run should end, then reads the system clock \u003Cstrong>four times a second\u003C\u002Fstrong> to work out what is left, which is how a hidden tab ends up ringing at the same moment as a visible one.\u003C\u002Fp>\n\u003Cp>Browsers throttle background tabs, that is they slow down the repeating scripts inside them, sometimes down to one run per minute. A countdown that adds up those ticks loses whole minutes over a long session, while this one recomputes the time left from the clock and catches up as soon as the tab comes back.\u003C\u002Fp>\n\u003Cp>The tab title blinks between \u003Cstrong>00:00\u003C\u002Fstrong> and the page name every \u003Cstrong>0.9 seconds\u003C\u002Fstrong>, the one part of the alert that carries to another tab along with the sound. The red panel and the pulsing ring wait on the timer's own tab.\u003C\u002Fp>\n\u003Cp>Closing the tab is a different matter from hiding it. The run lives in the open page and nothing gets saved, so a reload, a closed tab or a restarted browser drops the count back to its starting duration. On a phone that includes a browser killed by the system behind another app.\u003C\u002Fp>\n\n\u003Ch2 id=\"muted-tab-sleep\">What happens if the tab is muted or the device sleeps?\u003C\u002Fh2>\n\u003Cp>A muted tab, an unchecked sound box or a browser that blocks audio all land in the same place, with the red panel and the blinking title left to carry the alert. That silent mode is worth choosing on purpose in an open office or a library, where a \u003Cstrong>1046 Hz square wave\u003C\u002Fstrong> is not welcome.\u003C\u002Fp>\n\u003Cp>Sleep changes nothing either. A sleeping device suspends the page and no code runs at all, then on wake the timer compares its stored end time with the clock, finds it already passed and drops to 00:00 with the alarm on. A \u003Cstrong>20 minute timer\u003C\u002Fstrong> started before a laptop lid closes will ring when the lid opens again.\u003C\u002Fp>\n\n\u003Ch2 id=\"maximum-duration\">How long can a single timer run?\u003C\u002Fh2>\n\u003Cp>A single run tops out at \u003Cstrong>24 hours\u003C\u002Fstrong>, applied to the sum of the three fields whatever mix goes into them. Past the sixty minute mark the display switches from \u003Ccode>mm:ss\u003C\u002Fcode> to \u003Ccode>h:mm:ss\u003C\u002Fcode>, so a 90 minute session reads \u003Cstrong>1:29:59\u003C\u002Fstrong> a second after Start. The minutes box alone reaches \u003Cstrong>1440\u003C\u002Fstrong>, which is what makes a link like \u003Ccode>?minutes=90\u003C\u002Fcode> valid without touching the hours field.\u003C\u002Fp>\n\u003Cp>Anything above the ceiling gets clipped back to \u003Cstrong>24:00:00\u003C\u002Fstrong>, so a stray 240 in the hours box costs nothing. Adding up several finished sessions is a different job, handled by the \u003Ca href=\"\u002Fdate\u002Fhours-calculator\">hours calculator\u003C\u002Fa>.\u003C\u002Fp>\n\n\u003Ch2 id=\"pomodoro\">What is the 25 minute Pomodoro timer?\u003C\u002Fh2>\n\u003Cp>A round is \u003Cstrong>25 minutes\u003C\u002Fstrong> of work followed by a \u003Cstrong>5 minute\u003C\u002Fstrong> break, with a longer pause of 15 to 30 minutes once four rounds are done. Francesco Cirillo described the technique in the late 1980s and named it after the tomato shaped kitchen timer he used as a student.\u003C\u002Fp>\n\u003Cul>\n\u003Cli>Start a \u003Ca href=\"\u002Fdate\u002Ftimer?minutes=25\">25 minute run\u003C\u002Fa> and work until the alarm.\u003C\u002Fli>\n\u003Cli>Switch to a \u003Ca href=\"\u002Fdate\u002Ftimer?minutes=5\">5 minute break\u003C\u002Fa>, then start the next round.\u003C\u002Fli>\n\u003Cli>After four rounds, take 15 to 30 minutes away from the screen.\u003C\u002Fli>\n\u003C\u002Ful>\n\u003Cp>Those numbers are a scheduling convention, so people move them around freely.\u003C\u002Fp>","2026-08-04T07:29:53.716Z","2026-08-06T10:00:02.742Z","2026-08-06T10:00:00.000Z","en","Online Timer",[16,20,24,28,32,36],{"id":17,"question":18,"answer":19},2164,"How long until 5 minutes is up?","\u003Cp>Five minutes is \u003Cstrong>300 seconds\u003C\u002Fstrong>, so a run started at 10:00 ends at 10:05. The ring shows 04:00 after the first minute and \u003Cstrong>02:30\u003C\u002Fstrong> at the halfway point. It empties in proportion to the time left, which gives the answer at a glance without reading the digits. If the start time got lost along the way, Reset brings back a clean 05:00.\u003C\u002Fp>",{"id":21,"question":22,"answer":23},2165,"Can I share the exact timer I set?","\u003Cp>The duration travels in the address, so \u003Ccode>\u002Fdate\u002Ftimer?minutes=10\u003C\u002Fcode> opens a \u003Cstrong>10 minute timer\u003C\u002Fstrong> for whoever follows the link. Hours and seconds ride along the same way, as in \u003Ccode>\u002Fdate\u002Ftimer?hours=1&minutes=30\u003C\u002Fcode> for 90 minutes. The bare address \u003Ccode>\u002Fdate\u002Ftimer\u003C\u002Fcode> loads a 5 minute timer, the duration the page ships with. A link sets the duration and the person on the other end still presses Start.\u003C\u002Fp>",{"id":25,"question":26,"answer":27},2166,"Why does the alarm stop by itself?","\u003Cp>The beep runs for \u003Cstrong>60 seconds\u003C\u002Fstrong> at most, which comes to roughly 50 cycles of the two-tone pattern, then it cuts out on its own so an abandoned tab stays quiet. The red panel and the 00:00 reading stay on screen after the sound ends, which is how a finished timer can be told apart from an idle one. Press Stop alarm to silence it sooner or Reset to clear everything.\u003C\u002Fp>",{"id":29,"question":30,"answer":31},2167,"How can I count 5 minutes without a timer?","\u003Cp>Counting to \u003Cstrong>300\u003C\u002Fstrong> in silence only holds up if each count stays close to a second. A drift of a tenth per count runs half a minute off across five full minutes. A wall clock works as long as someone keeps watching it. Anything with a real cutoff, like a boiled egg or a practice test question, is safer on a countdown that alarms at zero than on a count kept in the head.\u003C\u002Fp>",{"id":33,"question":34,"answer":35},2168,"Can the timer run for longer than an hour?","\u003Cp>A single run goes up to \u003Cstrong>24 hours\u003C\u002Fstrong>, which covers an overnight proof or a full working day. The hours field accepts 0 to 24 and the minutes field takes up to 1440 on its own, so \u003Ccode>\u002Fdate\u002Ftimer?minutes=90\u003C\u002Fcode> is a valid 90 minute timer that reads \u003Cstrong>1:30:00\u003C\u002Fstrong> as soon as it starts.\u003C\u002Fp>",{"id":37,"question":38,"answer":39},2169,"Which quick timers start in one click?","\u003Cp>Nine presets sit under the fields at 1, 3, 5, 10, 15, 20, 30, 45 and 60 minutes. Clicking one starts the countdown straight away, so a \u003Cstrong>10 minute timer\u003C\u002Fstrong> or a \u003Cstrong>1 minute timer\u003C\u002Fstrong> is a single tap on a phone. Each chip is also a link, which means it can be right-clicked and copied like any other address on the page.\u003C\u002Fp>",[],{"id":42,"documentId":43,"uid":44,"name":45,"tagline":46,"hubContent":47,"createdAt":48,"updatedAt":48,"publishedAt":49,"locale":13},18,"ehwrtpouixz8z6oll6q4uz1z","date","Time & Date","Ages, durations, dates and hours worked","\u003Cp>Date math is where spreadsheets quietly betray you: months have different lengths, years leap, shifts cross midnight. These calculators handle those edge cases explicitly. Compute an exact age, count the days between two dates or total a time card with breaks, and see the method under each result.\u003C\u002Fp>","2026-07-17T11:46:52.373Z","2026-07-17T12:01:48.621Z",{"id":51,"metaTitle":52,"metaDescription":53,"keywords":54,"metaRobots":54,"structuredData":54,"metaViewport":54,"canonicalURL":54},529,"5 Minute Timer: Free Online Countdown with Alarm","A 5 minute timer that opens at 05:00 and starts in one click. Nine presets from 1 to 60 minutes, an alarm at zero and an accurate count in a hidden tab.",null,[],[57,69,81,94],{"id":58,"documentId":59,"slug":60,"term":61,"definition":62,"relatedTools":63,"createdAt":66,"updatedAt":67,"publishedAt":68,"locale":13},17,"o1ljpluv6app6z9rrhst4gfn","cubic-yard","Cubic yard","\u003Cp>A \u003Cstrong>cubic yard\u003C\u002Fstrong> is the volume of a cube measuring 3 x 3 x 3 feet, which equals 27 cubic feet or about \u003Cstrong>0.7646 m³\u003C\u002Fstrong>. It is the standard unit for ordering bulk materials in the United States: ready-mix concrete, topsoil, gravel, sand and mulch are all priced and delivered by the cubic yard, often shortened to \"yard\" on a quote.\u003C\u002Fp>\u003Cp>For scale, a typical 12 x 10 ft patio slab poured 4 inches thick contains 40 cubic feet, which is 40 \u002F 27 = 1.48 cubic yards of concrete. A standard ready-mix truck carries 8 to 10 cubic yards, so that whole slab uses less than a fifth of one load.\u003C\u002Fp>\u003Cp>How big is a cubic yard in practice? The cube stands 3 feet on each side, roughly counter height, and holds about 14 full wheelbarrow loads of material. Spread out, one cubic yard covers close to 100 square feet at a depth of 3 inches, the usual layer for mulch or a gravel path.\u003C\u002Fp>",[64,65],"math\u002Fconcrete-calculator","math\u002Fvolume-calculator","2026-07-18T14:23:56.812Z","2026-08-02T10:00:01.228Z","2026-08-02T10:00:00.000Z",{"id":70,"documentId":71,"slug":72,"term":73,"definition":74,"relatedTools":75,"createdAt":78,"updatedAt":79,"publishedAt":80,"locale":13},16,"mdw0ypy9f3z1nioxaxnl9rvr","password-entropy","Entropy (passwords)","\u003Cp>\u003Cstrong>Entropy\u003C\u002Fstrong> measures how unpredictable a password is, expressed in bits. Each additional bit doubles the number of guesses an attacker needs. For a randomly generated password, it follows a simple formula: entropy = length × log2 of the alphabet size, so both the length and the variety of characters raise the score.\u003C\u002Fp>\u003Cp>A random 16-character password drawn from the 94 printable ASCII symbols reaches 16 × log2(94), about \u003Cstrong>105 bits\u003C\u002Fstrong>. At 10 billion guesses per second, exhausting that space would take on the order of 10^14 years, while a 6-character password from the same alphabet peaks at 39 bits and falls in about a minute.\u003C\u002Fp>\u003Cp>Written as a formula, \u003Cstrong>E = L × log2(N)\u003C\u002Fstrong>: the entropy equals the length L multiplied by the base-2 logarithm of N, the number of possible symbols per character. Current guidance treats 75 to 80 bits as the comfortable minimum for accounts that matter, a level a random 12-character password mixing all character types already clears.\u003C\u002Fp>",[76,77],"generator\u002Fpassword-generator","generator\u002Fusername-generator","2026-07-18T14:23:55.755Z","2026-08-01T10:00:01.360Z","2026-08-01T10:00:00.000Z",{"id":82,"documentId":83,"slug":84,"term":85,"definition":86,"relatedTools":87,"createdAt":91,"updatedAt":92,"publishedAt":93,"locale":13},15,"ypkfs6wnfljm03ge2b1ztiwv","percentage-point","Percentage point","\u003Cp>A \u003Cstrong>percentage point\u003C\u002Fstrong> is the unit used to express the arithmetic difference between two percentages. It compares rates by subtraction, while \"percent\" compares them by division: the two measures answer different questions and can differ wildly for the same change.\u003C\u002Fp>\u003Cp>Example: an interest rate that moves from 5% to 7% rises by \u003Cstrong>2 percentage points\u003C\u002Fstrong> (7 - 5 = 2), but by 40 percent in relative terms (2 ÷ 5 × 100 = 40). Saying \"the rate went up 2%\" would be wrong on both counts: the correct phrasings are \"up 2 points\" or \"up 40%\".\u003C\u002Fp>\u003Cp>The standard abbreviation is \u003Cstrong>pp\u003C\u002Fstrong>, sometimes just \"points\", as in \"unemployment fell by 0.5 pp\". Confusing percent with percentage points remains the classic trap: a party moving from 20% to 30% in the polls gains 10 percentage points, yet grows by 50 percent, and headlines regularly pick the wrong figure.\u003C\u002Fp>",[88,89,90],"math\u002Fpercentage-calculator","math\u002Faverage-calculator","finance\u002Fcalcul-remise","2026-07-18T14:23:54.573Z","2026-07-31T10:00:01.940Z","2026-07-31T10:00:00.000Z",{"id":95,"documentId":96,"slug":97,"term":98,"definition":99,"relatedTools":100,"createdAt":103,"updatedAt":104,"publishedAt":105,"locale":13},14,"g3okb797ekrz0kkpm36mfjwc","weighted-average","Weighted average","\u003Cp>A \u003Cstrong>weighted average\u003C\u002Fstrong> is an average where each value counts in proportion to an assigned importance, called its weight, instead of counting equally. Each value is multiplied by its weight, the products are added, and the sum is divided by the total of the weights. Class grades, GPAs, and stock indexes are all weighted averages.\u003C\u002Fp>\u003Cp>Example: scores of 92, 85, and 88 with weights of 30, 30, and 40 give (92 x 30 + 85 x 30 + 88 x 40) \u002F 100 = \u003Cstrong>88.3\u003C\u002Fstrong>. The plain average of the same scores is 88.33, but if the heaviest score dropped to 78, the weighted average would fall to 84.3 while the plain average only fell to 85.\u003C\u002Fp>\u003Cp>The weighted average formula in plain words: multiply each value by its weight, add up the products, then divide by the sum of the weights. In a spreadsheet the whole calculation fits in one cell, since Excel's SUMPRODUCT function multiplies and adds in a single pass: SUMPRODUCT of the values and weights, divided by SUM of the weights.\u003C\u002Fp>",[89,101,102],"math\u002Fgrade-calculator","math\u002Fgpa-calculator","2026-07-18T14:23:53.329Z","2026-07-30T10:00:01.216Z","2026-07-30T10:00:00.000Z",{"slugs":107},[108,109,110,111,112,113,114,115,116,117,118,119,120,121,122,123,124,125,126,127,128,129,130,131,132,133,134,135,136,137,138,6,139,140,141,142,143,144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,162],"age-calculator","average-calculator","cd-calculator","concrete-calculator","cursive-font-generator","date-calculator","fantasy-name-generator","final-grade-calculator","fraction-calculator","glitch-text-generator","gpa-calculator","grade-calculator","hex-converter","hours-calculator","interest-calculator","military-time-converter","roman-numeral-converter","password-generator","binary-converter","celsius-to-fahrenheit-converter","kg-to-lbs-converter","percentage-calculator","word-counter","tip-calculator","morse-code-translator","username-generator","ratio-calculator","sales-tax-calculator","small-text-generator","mm-to-inches-converter","volume-calculator","square-footage-calculator","stair-calculator","roof-pitch-calculator","board-foot-calculator","aspect-ratio-calculator","rounding-calculator","random-letter-generator","mulch-calculator","fence-calculator","upside-down-text-generator","acreage-calculator","gravel-calculator","proportion-calculator","paint-calculator","tile-calculator","braille-translator","quadratic-formula-calculator","gcf-calculator","probability-calculator","hex-to-rgb-converter","uuid-generator","standard-deviation-calculator","lcm-calculator","caesar-cipher"]