Free, fast, and accurate UK tax, VAT, mortgage, and car finance calculators — plus time, date, health, and developer tools used in 50+ countries.
daytics is a growing collection of free calculators and everyday tools, built in the United Kingdom by a one-person team. Every tool runs instantly in your browser — no accounts, no tracking beyond anonymous analytics, no newsletter spam. Read more about daytics.
Free, instant, and ready to use right now.
Tax, mortgage, VAT, salary and money calculators
Income tax, NI, student loan, and take-home pay 2025/26.
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Add or remove UK VAT instantly. Standard, reduced, or custom rate.
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Convert 170+ currencies with live daily exchange rates.
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Monthly repayments, total interest, and amortisation schedule.
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SDLT for residential and buy-to-let properties 2025/26.
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Employee, employer, and self-employed NI 2025/26.
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Project your retirement pot and monthly income.
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Tax owed on dividends 2025/26 including allowance.
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Compare take-home pay across two UK tax years.
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See how savings grow over time with compound interest.
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Convert between hourly, daily, weekly, and annual salary.
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How the value of money has changed over time in the UK.
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Calculate how your savings grow with interest.
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HP, PCP & personal loan monthly payments in one tool.
LiveMonthly payments, balloon (GMFV) and total cost on PCP.
LiveHire Purchase monthly payments, total repayable & interest.
LiveCompare APRs or reverse-calc APR from a monthly payment.
LiveSee how a PCP balloon affects monthly cost and total interest.
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How long to pay off your credit card and total interest.
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Calculate the fuel cost of any journey in the UK.
LiveAnnual and monthly council tax by UK band and authority.
NewUK Child Benefit and High Income Child Benefit Charge.
NewProject tax-free ISA growth over any term.
NewPlans 1, 2, 4, 5, and postgrad monthly repayment.
NewStatutory Sick Pay eligibility and weekly amount.
NewBusiness days, dates, countdowns and calendars
Count working days between two dates. Excludes weekends and public holidays by country.
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Convert any date and time between cities worldwide. Handles daylight saving automatically.
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Browse public and bank holidays for any country and year. Live data updated throughout the year.
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Today's accurate sunrise and sunset times for your location. No location data stored.
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Find the exact time between any two dates in years, months, weeks, and days.
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Your exact age in years, months, and days — plus a countdown to your next birthday.
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Live countdown to any date or event. Share with a link.
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Total hours worked from time logs. Add multiple shifts and breaks.
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Monthly and yearly print-ready calendars with holidays.
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All 12 months on one page with week numbers.
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Visual calendar with holidays highlighted by country.
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What week is it? ISO week number for any date.
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Find what day any date falls on — past, present, or future.
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Add or subtract days, weeks, months, or years from any date.
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Check if any year is a leap year. Countdown to next Feb 29.
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Find the best meeting time across multiple time zones.
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Exact dates of solstices and equinoxes for any year.
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Convert between Unix epoch time and human dates.
LivePercentages, units, tips, fractions and everyday maths
Four modes: % of, is what %, change, and add/subtract %.
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Length, weight, temperature, area, volume, speed, and data.
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Convert kg, stone, pounds, ounces. UK-friendly stone & lbs display.
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Split any bill between friends with tip calculation.
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Calculate the perfect tip and split between people.
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Sale prices, savings, and discount percentages.
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Cups to grams, ml to oz, and more by ingredient.
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Count words, characters, sentences, and reading time.
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Full scientific calculator with trig, log, and more.
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Add, subtract, multiply, divide, and simplify fractions.
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Mean, median, mode, and range of any numbers.
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Convert numbers to Roman numerals and back.
LiveBMI, calories, sleep, body fat and health calculators
Calculate your Body Mass Index and healthy weight range.
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Daily calorie needs based on age, weight, and activity.
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Pregnancy due date from your last period.
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Find your ideal weight range from 4 formulas.
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Estimate body fat percentage using measurements.
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Basal Metabolic Rate — calories burned at rest.
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Best time to wake up or go to sleep based on cycles.
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Fun compatibility score for two names.
LiveWorld clock, weather, moon phases and global tools
QR codes, passwords, hashes and colour tools
Generate QR codes for URLs, text, email, and more.
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Generate strong, secure passwords instantly.
LiveGenerate SHA-256 and SHA-512 hashes from text.
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Convert between HEX, RGB, and HSL colour formats.
LiveEncode and decode Base64 with full UTF-8 support.
LivePercent-encode URLs and query strings.
LivePretty-print, minify, and validate JSON.
LiveGenerate placeholder paragraphs, sentences, or words.
LiveGenerate cryptographically secure v4 UUIDs.
LiveImage resizer, compressor and converter
Pomodoro, stopwatch, alarm and timer
Built for speed, accuracy, and simplicity.
Every tool runs directly in your browser. No server round-trips, no waiting.
No accounts, only anonymous analytics. Your data stays yours.
Public holidays, time zones, and sunrise data for countries worldwide.
Every tool is designed mobile-first and works beautifully on any device.
daytics™
