A knowledge graph you can browse · free tools & guides
Around
What would you like to understand? Fast answers, useful tools, and everything connected around a topic.
Today's curiosity
Worth understanding today — no doomscroll required.
There is no credible evidence Einstein said it.
↳ A 70-year-old misquote worth retiring. Can a year have 53 weeks?Yes.
↳ A question people actually ask, with a straight answer. How do I add a percentage to a number?Multiply by one plus the rate: adding 15% to 200 gives 230.
↳ A question people actually ask, with a straight answer. How many public holidays does Ireland have in 2026?Ireland has 10 nationwide public holidays in 2026, according to the Nager.
↳ A question people actually ask, with a straight answer. What is a diffusion model?How AI creates images from noise step by step.
↳ The plain-English map of Artificial Intelligence.Popular tools
See the monthly repayment for any loan, rate and term — plus what overpaying does to the interest and the years.
Tool AI model comparisonCompare two AI models side by side — token cost at your own volumes, context window and output limits — from vendor-published figures. Not a performance ranking.
Tool Compound Interest CalculatorSee how savings or investments grow when interest earns interest — with a year-by-year breakdown.
Tool Percentage CalculatorWork out X% of a number, what percent one number is of another, percentage change, and reverse a percentage increase.
Tool Age CalculatorYour exact age in years, months and days — leap-day-safe, with the day of the week you were born.
Tool Date CalculatorDays between two dates, working days, add or subtract days, and the weekday or ISO week of any date.
Tool VAT CalculatorAdd or remove VAT at the current Irish rates — or any rate — with the net, VAT and gross laid out.
Tool Annual Leave OptimiserWhere to spend your leave days for the most consecutive days off — computed from each country’s 2026 public holidays.
Tool Inflation CalculatorWhat inflation does to prices and savings over time: future prices, today’s value of future money, and real rates.
Tool Savings Goal CalculatorWork out the monthly amount needed to reach a savings target by a chosen date.
ToolBrowse topics
In the news
Topical right now — with the explainer behind it. More →
- 'Don't bank on it': Three factors shaping next week's interest rates decision - sbs.com.au Understand: Interest Rates →
- 'Stretch our money': Romanians face highest EU inflation - france24.com Understand: Inflation →
- Australian Shares Look Set To Dip On Inflation Angst - Finimize Understand: Inflation →
- Belgian lender KBC raises annual outlook, expects higher interest rates - RTE.ie Understand: Interest Rates →
Recently added
Fresh explainers and tools, newest first.
A compass needle aligns with Earth's magnetic field to indicate north.
Guide How does a QR code work?QR codes store information using patterns of squares and error correction.
Guide How does a touchscreen work?Capacitive and resistive touchscreens sense touch differently.
Guide How the Climate System WorksEnergy balance, greenhouse effect, and feedback loops.
Guide How GPS WorksSatellite signals, time synchronization, and position calculation.
Guide How the Human Brain WorksNeural communication and the functions of major brain areas.
GuideRabbit hole of the day
A path through the graph — one idea leads to the next. Start anywhere.
Not a blog.
A map of useful answers.
Every page on Around is a node in a knowledge graph: tools, guides, comparisons, examples and definitions, connected by real relationships. Follow any thread — the next useful thing to understand is always one step away.
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