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Small tools that give you a straight answer
19 tools and 124 word lists. Date maths that is fiddly in your head, the UK work questions nobody enjoys looking up, and words filtered down to the real ones. Open one, get your answer, close the tab.
Dates and time
Days between dates
Count the days between any two dates, split into weeks, months, working days and weekend days.
1 Jan → 31 Jan = 30 daysAge calculator
Exact age in years, months and days from a date of birth, plus the countdown to the next birthday.
Born 15 Mar 1990 = 36y 3mWorking days calculator
Count working days between dates, or add them to one. Skips weekends and UK bank holidays.
All of Jan 2026 = 22 working daysAdd or subtract days
Add days to a date or count back from one, in calendar days or working days.
10 Jul + 90 days = 8 OctCountdown to a date
Days until a birthday, deadline or any date you name, with a live clock. Shareable by link.
Live countdown, share the linkTime duration calculator
How long between two times, including overnight, with an optional unpaid break taken off.
09:00 → 17:30 = 8h 30mWork and holiday (UK)
Statutory rules, taken from gov.uk rather than remembered.
Holiday entitlement calculator
The UK statutory minimum holiday for your working pattern, pro rata if you start part way through the year.
3 days a week = 16.8 daysUK bank holidays, and how to make them last
Every UK bank holiday, and where to put your leave so a few days turn into a fortnight.
Take 4, get 16 days offNotice period calculator
Statutory minimum notice from your start date, for either side. They are not the same.
10 years in: 10 weeks vs 1Overtime calculator
Overtime pay at any multiplier, with the average hourly rate the minimum wage is measured against.
8 hrs at 1.5× £15 = £180Statutory sick pay calculator
Statutory Sick Pay under the new April 2026 rules: no waiting days, no earnings floor.
5 days off = £123.25Maternity pay calculator
Statutory Maternity Pay across all 52 weeks of leave, including the weeks that pay nothing.
£600/wk → £540, then £194.32Pro rata salary calculator
What a full-time salary comes to for the days or hours you actually work.
£30k, 3 days a week = £18,000Numbers and money
Dividend tax calculator
Dividend tax at the 2026/27 rates, stacked on top of your salary, with the band breakdown.
£30k + £10k div = £1,021.25Fuel cost calculator
Fuel cost for any journey, split between passengers, with cost per mile.
100 miles at 45mpg = £15.20VAT calculator UK
Add VAT to a price or work backwards from a total. Net, VAT and gross, every time.
£100 inc VAT = £83.33 + £16.67Discount calculator
What you pay after a discount, what percentage a sale is, and what to charge with a markup.
£80 less 30% = £56Average calculator
Mean, median, mode, range and standard deviation from a list of numbers.
Paste from a spreadsheetText and words
Word counter
Words, characters, sentences, paragraphs, syllables and reading time, counted as you type.
Counts as you type5 letter words
The Wordle list, split by first and last letter, most common first.
52 letter combinationsWords by first letter
Every common word beginning with a given letter, with meanings.
X, Q, Z and the restWords by ending
Words finishing with a letter or a common ending.
-ing, -tion, -nessWhy these exist
Most tools like these either bury the answer under ads, or hand you a number with no way to check it. Toolbay shows its working: every page explains the method and names the source of any data it uses, so you can decide whether to trust the figure.
Date maths runs in UTC on whole calendar days, so daylight saving never quietly adds or drops one. Bank holidays and statutory holiday rules come from the official gov.uk feeds, not from memory, because substitute days and the 28-day cap are exactly the things people get wrong. Word lists are checked against a dictionary and ranked by how often each word actually appears in English. The detail is on how we build these.