Date & time tools
Age Calculator
Free age calculator that shows your exact age in years, months, and days, plus days until your next birthday — using real calendar-based math, not a 30-day-average approximation.
Countdown Timer
A live countdown to any date and time — no ads, no account, and a link you can share that shows the exact same countdown.
Date Calculator
Free date calculator with two modes: count the exact days between two dates, or add/subtract years, months, weeks, and days to find a resulting date.
Day of the Week Calculator
Free day-of-the-week calculator — enter any date, past or future, and instantly see which day of the week it falls (or fell) on, plus whether it's a weekday or weekend.
Decimal Hours Converter
Convert hours and minutes to decimal hours for payroll — enter time as separate hour/minute fields (so you can't accidentally type "38.20" instead of 38.33), with optional FLSA-compliant rounding presets.
Holiday Shipping Deadline Calculator
Free holiday shipping deadline calculator — pick the date a gift needs to arrive by, and instantly see the latest "ship by" date for USPS, UPS, and FedEx service levels, counted in real business days (weekends and major holidays excluded).
Hours Calculator
Free hours calculator that shows the exact hours and minutes between two clock times — with an optional unpaid break deduction and automatic overnight-shift handling.
Military Time Converter
Convert between 12-hour (AM/PM) and 24-hour (military) time instantly, with a full 00:00-23:00 reference chart always visible — no ads, no signup.
Pet Age Calculator
Convert your dog or cat's age to human years using the modern vet-recommended method — not the outdated "times 7" myth.
Relationship Calculator
Free relationship calculator that shows exactly how long you've been together — down to the second, live-updating — with an automatic fireworks celebration for 1st through 10th anniversaries.
Time Calculator
Free time calculator with two modes: combine two durations (days, hours, minutes, seconds) with add/subtract, or apply a duration to a specific date and time.
Time Card Calculator
Free weekly time card calculator — enter start/end times and a break for each day of the week and get your total hours (and total pay, if you enter an hourly rate) instantly.
Time Duration Calculator
Free time duration calculator that finds the exact elapsed time between two specific moments — down to the second, including both the date and time of day.
Time Zone Calculator
Free time zone calculator that converts a date and time from one time zone to another, using your browser's built-in time zone database — daylight saving time is handled automatically for the date you pick.
From the blog
Most military time converters make you retype every value. Ours keeps the whole 00:00-23:00 chart on screen.
A common free converter shows ads unless you pay $3.33/month to remove them. Ours has no ads and no paywall, and never makes you leave the page to look up another hour.
2026-09-09 "38 hours 20 minutes" is not 38.20 on a paycheck. It's 38.33 — and that gap is real money.
Minutes are base-60, payroll math is base-10, and typing the minutes straight after the decimal point quietly underpays a few minutes of wages every time. Separate hour/minute fields make that mistake structurally impossible.
2026-09-09 Shipping deadlines for the holidays aren't published yet — count backward in business days instead
USPS, UPS, and FedEx haven't announced exact 2026 holiday cutoff dates — but their real transit-time windows are published, and counting backward from any needed-by date works regardless.
2026-09-08
GTA 6's Release Date Is Set for November 19, 2026, After Two Delays — Here's What's Confirmed
Rockstar Games has set November 19, 2026 as the release date for Grand Theft Auto VI, after moving the date twice. Here's what the studio has confirmed, what analysts expect, and a live countdown to launch.
2026-09-03
Daylight Saving Time Ends November 1, 2026 — and the Senate Could Make It the Last Clock Change
Clocks fall back an hour at 2 a.m. on November 1, 2026. A bill to end the twice-yearly switch for good has already passed the House — here's the live countdown, the exact time, and where the legislation actually stands.
2026-09-03
Apple's September 9, 2026 Event Is Set — iPhone 18 Pro, a Foldable iPhone, and a Live Countdown
Apple has confirmed a September 9, 2026 event — the first product launch under new CEO John Ternus — expected to bring the iPhone 18 Pro, iPhone 18 Pro Max, and Apple's first foldable iPhone. Here's what's confirmed, plus a live countdown.
2026-09-03 The "1 dog year = 7 human years" rule is a myth the AVMA has been trying to correct for years
The American Veterinary Medical Association calls the ×7 rule an "old myth" — pets age fastest in their first two years, then level off, and for dogs, breed size changes the curve after that.
2026-09-02 Countdown timer apps keep adding ads — this one is just a link
App store reviews describe a familiar pattern: banner ads, then full-screen video ads for any action, then a subscription to even use the widget. A countdown timer is a date and a clock — it shouldn't need any of that.
2026-09-02 Most age calculators secretly round every month to 30 days. This one doesn't
Calculator.net admits its own age math is ambiguous at month boundaries. We picked one deterministic rule and show our work.
2026-09-01 We built a relationship calculator that throws you a fireworks show for every anniversary
Every 'how long have we been together' app we checked pushes you toward a paywalled app for milestone tracking. Ours just shows you the fireworks, free.
2026-09-01 What should Jan 31 plus one month equal? Most calculators don't tell you
Add a month to Jan 31 with plain date math and you can land on March 3rd instead of February. We picked the intuitive answer and documented it.
2026-09-01 "Add 1 month" and "add 30 days" are not the same thing — pick the right calculator
One means a fixed 720 hours. The other means the same date, next month, whatever that month's length is. Using the wrong one quietly gives you the wrong answer.
2026-09-01 Working 10pm to 6am? Most hours calculators quietly assume you never do
Enter an end time earlier than your start time and a lot of calculators either error out or return a negative number. This one assumes an overnight shift and tells you it did.
2026-09-01 A weekly time card calculator that doesn't make you type the same shift seven times
Work the same hours every day? Fill in Monday once and copy it down instead of retyping your schedule seven separate times.
2026-09-01 A time zone converter that knows January and July give different answers
New York is 4 hours behind UTC in summer and 5 in winter. A time zone calculator that only knows "today's" offset will quietly get half the year wrong.
2026-09-01 "184 days" and "184 days, 2 hours, 30 minutes" are both true — which one do you need?
A day counter tells you the dates. A time duration calculator tells you the actual elapsed time — the difference matters more than it sounds.
2026-09-01 What day of the week were you born on? Most people have no idea
It's one of those facts nobody carries around in their head — until someone asks at a party and you have no answer.
2026-09-01