Essential everyday tools for UK residents. Date calculations, time conversions, unit converters, and practical planning tools.
Calculate your exact age in years, months, weeks, days, and even seconds from your date of birth.
Calculate NowAdd or subtract days, weeks, or months from any date. Calculate duration between two dates.
Calculate NowCalculate business days between dates, excluding UK weekends and bank holidays.
Calculate NowAdd, subtract, and convert time in hours, minutes, and seconds. Calculate time differences.
Calculate NowConvert times between UK (GMT/BST) and international time zones accurately.
Calculate NowCount down to important dates, holidays, events, and deadlines with precision.
Calculate NowConvert between metric and imperial units - length, weight, volume, and more.
Calculate NowConvert between Celsius, Fahrenheit, and Kelvin temperatures instantly.
Calculate NowConvert oven temperatures between Celsius, Fahrenheit, gas marks, and fan settings.
Calculate NowConvert between stones, pounds, and kilograms - the UK's most popular weight units.
Calculate NowConvert between metres, feet, inches, miles, kilometres, and other length units.
Calculate NowGenerate secure random passwords for your online accounts and services.
Calculate NowLiving in the United Kingdom means navigating a unique blend of measurement systems, time zones, and date conventions that set British daily life apart from much of the world. While officially metric since 1965, the UK retains imperial measurements for road distances, draught beer and cider, and commonly uses stones for body weight. Our comprehensive lifestyle calculators help UK residents handle these everyday calculations with ease.
From calculating your exact age for official documents to converting recipes between imperial and metric measurements, determining working days for employment contracts, or scheduling international calls across time zones, these tools address the practical calculations that British life demands.
The British measurement landscape reflects centuries of tradition combined with modern standardisation. Understanding when to use each system is essential for navigating UK life, from following recipes to understanding property listings, medical records, and fuel consumption figures.
| UK Common Unit | Metric Equivalent | Typical Use in UK |
|---|---|---|
| 1 Stone | 6.35 kg / 14 lbs | Body weight, NHS still records in kg |
| 1 Mile | 1.609 km | Road distances, speed limits |
| 1 UK Pint | 568 ml (20 fl oz) | Beer, milk (US pint = 473ml) |
| 1 UK Gallon | 4.546 litres | Fuel economy (US gallon = 3.785L) |
| 1 Foot | 30.48 cm | Height, room dimensions |
| 1 Inch | 2.54 cm | Screen sizes, smaller measurements |
| 1 Acre | 0.4047 hectares | Land and property sizes |
| 1 Fluid Ounce (UK) | 28.41 ml | Recipes, cocktails |
British recipes often use gas marks, a uniquely UK system dating from gas ovens introduced in the early 1900s. Converting between gas marks, Celsius, Fahrenheit, and fan oven settings is essential for following recipes from different sources.
| Gas Mark | Celsius | Fahrenheit | Fan Oven | Description |
|---|---|---|---|---|
| 1/4 | 110C | 225F | 90C | Very cool |
| 1/2 | 130C | 250F | 110C | Cool |
| 1 | 140C | 275F | 120C | Cool |
| 2 | 150C | 300F | 130C | Warm |
| 3 | 160C | 325F | 140C | Moderate |
| 4 | 180C | 350F | 160C | Moderate (most common) |
| 5 | 190C | 375F | 170C | Moderately hot |
| 6 | 200C | 400F | 180C | Hot |
| 7 | 220C | 425F | 200C | Hot |
| 8 | 230C | 450F | 210C | Very hot |
| 9 | 240C | 475F | 220C | Very hot |
The United Kingdom uses Greenwich Mean Time (GMT, UTC+0) during winter months and British Summer Time (BST, UTC+1) during summer. Understanding these time changes is essential for international communications, travel planning, and scheduling.
Remember: "Spring forward, fall back"
When calculating working days for contracts, notice periods, or delivery estimates, UK bank holidays must be excluded. Different parts of the UK observe different bank holidays - England and Wales have 8, Scotland has 9 (different dates), and Northern Ireland has 10.
| 2025 Date | Holiday | 2026 Date | Regions |
|---|---|---|---|
| 1 January | New Year's Day | 1 January | All UK |
| 2 January | 2nd January | 2 January | Scotland only |
| 17 March | St Patrick's Day | 17 March | NI only |
| 18 April | Good Friday | 3 April | All UK |
| 21 April | Easter Monday | 6 April | Eng, Wales, NI |
| 5 May | Early May Bank Holiday | 4 May | All UK |
| 26 May | Spring Bank Holiday | 25 May | All UK |
| 12 July | Battle of the Boyne | 13 July | NI only |
| 4 August | Summer Bank Holiday | 3 August | Scotland only |
| 25 August | Summer Bank Holiday | 31 August | Eng, Wales, NI |
| 25 December | Christmas Day | 25 December | All UK |
| 26 December | Boxing Day | 28 December* | All UK |
*When Christmas/Boxing Day falls on weekend, substitute days are given on following weekdays.
Understanding working days is crucial for calculating notice periods when resigning or being made redundant. UK statutory minimum notice depends on length of service:
To calculate working days in the UK, count Monday to Friday between two dates, then subtract UK bank holidays. England and Wales have 8 bank holidays annually, Scotland has 9, and Northern Ireland has 10. Our working days calculator automatically excludes weekends and regional UK bank holidays for accurate business day calculations.
One stone equals exactly 6.35029 kilograms or 14 pounds. The stone is still commonly used in the UK and Ireland for measuring body weight, despite metric being the official system. To convert stones to kg, multiply by 6.35. For example, 10 stone = 63.5 kg, 12 stone = 76.2 kg. The NHS records weight in kilograms but many British people think in stones.
UK gas marks follow a specific scale: Gas mark 1 = 140C (275F), Gas mark 4 = 180C (350F) for moderate ovens, Gas mark 6 = 200C (400F) for hot ovens, Gas mark 9 = 240C (475F) for very hot. Fan ovens run approximately 20C hotter, so reduce conventional temperatures by 20C when using fan settings.
The UK uses GMT (Greenwich Mean Time, UTC+0) in winter and BST (British Summer Time, UTC+1) from late March to late October. In 2025, clocks go forward on 30 March at 1am and back on 26 October at 2am. In 2026, clocks go forward on 29 March and back on 25 October. Remember: spring forward, fall back.
To calculate exact age: count full years from birth date to today, then count remaining months (accounting for different month lengths), then count remaining days. Our age calculator handles leap years and varying month lengths automatically. This is useful for official documents, visa applications, and legal age requirements.
UK statutory minimum notice is one week if employed for one month to two years. After two years, it's one week per year of service, up to 12 weeks maximum. Your employment contract may specify longer notice periods which take precedence. Use our working days calculator to determine your exact last working day.
UK pints and gallons are larger than US equivalents. A UK pint is 568ml (20 fluid ounces), while a US pint is only 473ml (16 fluid ounces). A UK gallon is 4.546 litres, whereas a US gallon is 3.785 litres - about 20% smaller. This matters when following American recipes or comparing fuel economy figures.
To convert miles to kilometres, multiply by 1.609. For quick mental conversion, multiply miles by 8 and divide by 5. For example: 60 miles = 96.5 km (or 60 x 8 / 5 = 96). UK road signs use miles while most of Europe uses kilometres. A marathon is 26.2 miles or 42.2 km.