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Free unit converters & calculators
Convert grams to cups, ounces to grams, tablespoons to ml, cups to ml, mg to ml and 63 more — 64 free kitchen and everyday unit converters — plus UK redundancy pay, paternity pay, notice pay and inheritance tax calculators with current 2026/27 rates. Accurate, fast, and private.
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Unit converters
Quick, exact conversions for the kitchen, the pharmacy and your fitness tracker — with the working shown, not just a number.
mg to ml Converter
Milligrams to millilitres with adjustable density — water, milk, oil and flour presets, plus a medicine-dosing caution.
Popularml to oz Converter
Millilitres to US fluid ounces and back — exact 29.5735 ml per fl oz, for recipes, bottles and labels.
Open converterLiters to Gallons Converter
Litres to gallons with both the US liquid gallon and the imperial (UK) gallon — they differ by about 20%.
Open converterSteps to km Converter
Steps to kilometres with adjustable stride length — how far is 10,000 steps, really?
Open convertercups to ml Converter
US cups to millilitres and back — exact 236.588 ml per cup, for recipes and baking.
Open converterkg to lbs Converter
Kilograms to pounds and back — exact 2.20462 lb per kg, for luggage, gym and body weight.
Open converterFahrenheit to Celsius Converter
Fahrenheit to Celsius and back — the exact (°F − 32) × 5/9 formula, for weather and ovens.
Open convertergrams to cups Converter
Grams to US cups and back with ingredient presets — flour, sugar, butter, milk, oil and rice.
Open converterounces to grams Converter
Ounces to grams and back — exact 28.3495 g per avoirdupois ounce.
Open convertertablespoons to ml Converter
Tablespoons to millilitres and back — exact 14.7868 ml per US tbsp.
Open converterteaspoons to ml Converter
Teaspoons to millilitres and back — exact 4.92892 ml per US tsp.
Open convertergrams to tablespoons Converter
Grams to US tablespoons and back with ingredient presets — butter, sugar, flour and more.
Open converterliters to quarts Converter
Litres to US quarts and back — 1 L = 1.05669 qt.
Open convertercups to tablespoons Converter
Cups to tablespoons and back — exactly 16 tbsp per US cup.
Open convertertablespoons to teaspoons Converter
Tablespoons to teaspoons and back — exactly 3 tsp per tbsp.
Open converterpints to cups Converter
Pints to US cups and back — exactly 2 cups per pint.
Open converterquarts to cups Converter
Quarts to US cups and back — exactly 4 cups per quart.
Open convertergrams to ml Converter
Grams to millilitres and back with density presets — water, milk, oil and flour.
Open convertergallons to cups Converter
How many cups in a gallon? 16 — US or UK (imperial), with the right cup for each.
Open converterliters to pints Converter
Litres to pints and back — imperial UK pints for beer and milk, or US pints.
Open converterfluid ounces to cups Converter
Fluid ounces to US cups and back — exactly 8 fl oz per cup.
Open converterteaspoons to cups Converter
Teaspoons to US cups and back — exactly 48 tsp per cup.
Open converterml to liters Converter
Millilitres to litres and back — divide by 1,000.
Open converterstone to kg Converter
Stones to kilograms and back — exactly 6.35029 kg per stone (1 stone = 14 lb).
Open converterstone to pounds Converter
Stones to pounds and back — exactly 14 lb per stone.
Open converterpounds to grams Converter
Pounds to grams and back — exactly 453.59237 g per pound.
Open converterounces to pounds Converter
Ounces to pounds and back — exactly 16 oz per pound.
Open convertergrams to kg Converter
Grams to kilograms and back — divide by 1,000.
Open convertertons to kg Converter
US tons (907.18474 kg) and metric tonnes (1,000 kg) to kilograms, both directions.
Open converterounces to kg Converter
Ounces to kilograms and back — 0.0283495 kg per ounce.
Open converterkg to ounces Converter
Kilograms to ounces and back — 35.274 oz per kilogram.
Open converterinches to cm Converter
Inches to centimetres and back — exactly 2.54 cm per inch.
Open converterfeet to meters Converter
Feet to metres and back — exactly 0.3048 m per foot.
Open convertermiles to km Converter
Miles to kilometres and back — exactly 1.609344 km per mile.
Open convertermm to inches Converter
Millimetres to inches and back — exactly 25.4 mm per inch.
Open converteryards to meters Converter
Yards to metres and back — exactly 0.9144 m per yard.
Open converterfeet to cm Converter
Feet to centimetres and back — exactly 30.48 cm per foot.
Open converterHeight Converter
Feet and inches to centimetres and back — 5 ft 8 in is 172.72 cm.
Open convertermeters to inches Converter
Metres to inches and back — 39.3701 in per metre.
Open converternautical miles to km Converter
Nautical miles to kilometres and back — exactly 1.852 km per nautical mile.
Open converterinches to feet Converter
Inches to feet and back — exactly 12 in per foot.
Open converteryards to feet Converter
Yards to feet and back — exactly 3 ft per yard.
Open converterShoe Size Converter
US, UK and EU shoe sizes for men and women — standard size charts.
Open convertercelsius to kelvin Converter
Celsius to kelvin and back — add 273.15; absolute zero is −273.15 °C.
Open converterfahrenheit to kelvin Converter
Fahrenheit to kelvin and back — absolute zero is −459.67 °F.
Open convertersquare feet to square meters Converter
Square feet to square metres and back — 0.09290304 m² per sq ft.
Open converteracres to hectares Converter
Acres to hectares and back — 0.40468564224 ha per acre.
Open converteracres to square feet Converter
Acres to square feet and back — exactly 43,560 sq ft per acre.
Open converteracres to square meters Converter
Acres to square metres and back — 4,046.8564224 m² per acre.
Open convertersquare miles to square km Converter
Square miles to square km and back — 2.589988110336 km² per sq mi.
Open convertersquare cm to square inches Converter
Square cm to square inches and back — 0.15500031 in² per cm².
Open converterkmh to mph Converter
km/h to mph and back — 0.621371192 mph per km/h.
Open converterknots to mph Converter
Knots to mph and back — 1.15077945 mph per knot.
Open convertermeters per second to kmh Converter
Metres per second to km/h and back — multiply by 3.6.
Open converterAge Calculator
Your exact age in years, months and days from your date of birth.
Open converterHours Calculator
Duration between two times — decimal hours, total minutes, optional break.
Open converterminutes to hours Converter
Minutes to hours and back — divide by 60.
Open converterdays to months Converter
Days to months and back — average months of 30.4375 days.
Open converterseconds to minutes Converter
Seconds to minutes and back — divide by 60.
Open convertermb to gb Converter
Megabytes to gigabytes and back — 1,024 MB per GB.
Open converterkb to mb Converter
Kilobytes to megabytes and back — 1,024 KB per MB.
Open convertergb to tb Converter
Gigabytes to terabytes and back — 1,024 GB per TB.
Open convertermbps to mb/s Converter
Mbps to MB/s and back — divide megabits by 8.
Open converterkcal to kj Converter
Kilocalories to kilojoules and back — 1 kcal = 4.184 kJ.
Open converterkW to hp Converter
Kilowatts to horsepower and back — 1 kW = 1.35962 metric hp.
Open converterpsi to bar Converter
Pounds per square inch to bar and back — 1 psi = 0.0689476 bar.
Open convertermpg to L/100km Converter
Miles per gallon (US) to litres per 100 km and back — 235.214 ÷ mpg.
Open converterwatts to amps Converter
Watts to amps and back — divide by the voltage (230 V, 120 V or 12 V).
Open converterflour grams to cups Converter
Flour grams to US cups and back — all-purpose, bread, whole wheat, cake and rye presets.
Open convertersugar grams to cups Converter
Sugar grams to US cups and back — granulated, caster, brown and powdered presets.
Open converterbutter grams to cups Converter
Butter grams to US cups and back — with sticks and tablespoons equivalents.
Open convertercocoa powder grams to cups Converter
Cocoa powder grams to US cups and back — sifted and spooned presets.
Open converterhoney grams to ml Converter
Honey grams to millilitres and back — at 1.42 g/ml.
Open converteroats grams to cups Converter
Oats grams to US cups and back — rolled, quick and steel-cut presets.
Open converterrice grams to cups Converter
Rice grams to US cups and back — white, brown, basmati and jasmine presets.
Open convertermilk grams to ml Converter
Milk grams to millilitres and back — at 1.03 g/ml.
Open converteroil grams to ml Converter
Oil grams to millilitres and back — at 0.92 g/ml.
Open convertersalt grams to teaspoons Converter
Salt grams to US teaspoons and back — fine, kosher and coarse sea salt presets.
Open converterbrown sugar grams to cups Converter
Brown sugar grams to US cups and back — packed, spooned and firmly packed presets.
Open converterpowdered sugar grams to cups Converter
Powdered sugar grams to US cups and back — sifted and unsifted presets.
Open converterchocolate chips grams to cups Converter
Chocolate chips grams to US cups and back — standard, mini and chunk presets.
Open convertermaple syrup grams to ml Converter
Maple syrup grams to millilitres and back — at 1.32 g/ml.
Open converteryogurt grams to ml Converter
Yogurt grams to millilitres and back — plain and Greek presets.
Open converterpeanut butter grams to cups Converter
Peanut butter grams to US cups and back — smooth and crunchy presets.
Open convertercream grams to ml Converter
Cream grams to millilitres and back — single and heavy (double) cream presets.
Open converterwater grams to ml Converter
Water grams to millilitres and back — the 1:1 reference, at 1.00 g/ml.
Open converterbaking powder grams to teaspoons Converter
Baking powder grams to US teaspoons and back — level-teaspoon weights.
Open convertercoffee grams to cups Converter
Coffee grams to cups brewed and back — 1:15, 1:16 and 1:17 brewing ratios.
Open convertercentiliters to milliliters Converter
Centiliters to millilitres and back — 1 cl = 10 ml.
Open converterdeciliters to milliliters Converter
Deciliters to millilitres and back — 1 dl = 100 ml.
Open converterdeciliters to cups Converter
Deciliters to US cups and back — 1 dl = 0.4227 cups.
Open convertercentiliters to cups Converter
Centiliters to US cups and back — 1 cl = 0.04227 cups.
Open converterliters to cups Converter
Litres to US cups and back — 1 litre = 4.22675 cups.
Open convertershots to ounces Converter
Shots to US fluid ounces and back — the 1.5 fl oz pour, plus UK measures.
Open converterdessert spoon to ml Converter
UK dessert spoons to millilitres and back — 1 dessert spoon = 10 ml.
Open converterfluid ounces to milliliters Converter
US or UK fluid ounces to millilitres and back — 29.5735 ml per US fl oz.
Open converterpints to milliliters Converter
UK or US pints to millilitres and back — 568.261 ml per UK pint.
Open converterbtu to kw Converter
BTU per hour to kilowatts and back — 1 kW = 3,412.14 BTU/h.
Open converterbtu to kwh Converter
BTU to kilowatt-hours and back — 1 kWh = 3,412.14 BTU.
Open converternm to lb-ft Converter
Newton-metres to pound-feet and back — 1 N·m = 0.73756 lb-ft.
Open converterkgm to nm Converter
Kilogram-metres to newton-metres and back — 1 kgm = 9.80665 N·m.
Open convertercc to horsepower Converter
Estimate horsepower from engine displacement — a labelled rule-of-thumb, not an exact conversion.
Open converterjoules to calories Converter
Joules to calories and back — 1 cal = 4.184 J.
Open converterkwh to joules Converter
Kilowatt-hours to joules and back — 1 kWh = 3,600,000 J.
Open converterwatts to btu per hour Converter
Watts to BTU per hour and back — 1 W = 3.41214 BTU/h.
Open converterkva to kw Converter
Kilovolt-amps to kilowatts and back — kW = kVA × power factor (default 0.8).
Open convertertherms to kwh Converter
Therms to kilowatt-hours and back — 1 therm = 29.307 kWh.
Open converterpsi to kpa Converter
Pounds per square inch to kilopascals and back — 1 psi = 6.89476 kPa.
Open converterinhg to hpa Converter
Inches of mercury to hectopascals and back — 1 inHg = 33.8639 hPa.
Open convertermmhg to kpa Converter
Millimetres of mercury to kilopascals and back — 1 mmHg = 0.133322 kPa.
Open converteratm to psi Converter
Atmospheres to pounds per square inch and back — 1 atm = 14.6959 psi.
Open converterlight years to km Converter
Light-years to kilometres and back — 1 light-year = 9.4607 trillion km.
Open converterau to km Converter
Astronomical units to kilometres and back — 1 AU = 149,597,870.7 km.
Open converterknots to kmh Converter
Knots to kilometres per hour and back — 1 knot = 1.852 km/h.
Open converterfeet per second to mph Converter
Feet per second to miles per hour and back — 1 ft/s = 0.681818 mph.
Open converterRing Size Converter
US, UK, EU and Japanese ring sizes from a standard chart — brands vary.
Open converterHat Size Converter
Head circumference to US, UK and EU hat sizes, plus S/M/L/XL bands.
Open converterClothing Size Converter
US, UK and EU women's clothing sizes from a typical chart — brands vary.
Open converterTV Screen Size Converter
Diagonal inches to width and height in cm for 16:9, 21:9 and 4:3 screens.
Open converterPaper Size Converter
A-series paper sizes in mm and inches, from A0 down to A8, plus US Letter.
Open converterGlove Size Converter
Hand circumference to glove sizes, with measuring tips for work, ski and cycling gloves.
Open converterKids Shoe Size Converter
Child foot length to US, UK and EU kids' shoe sizes — typical charts, brands vary.
Open converterBelt Size Converter
Waist measurement to belt size, using the usual waist-plus-two-inches rule.
Open converterPercentage Calculator
X% of Y, X as a percentage of Y, and percentage increase or decrease.
Open calculatorBMI Calculator
Body mass index in metric or imperial units, with WHO bands and a healthy-weight range.
Open calculatorUK employment calculators
Work out exactly what you're owed — redundancy pay, paternity pay and notice pay (PILON) with current 2026/27 statutory rates.
Redundancy Pay Calculator
Work out your UK statutory redundancy pay with 2026/27 rates — year-by-year age-band breakdown, NI rates, enhanced schemes and tax treatment.
Open calculatorPaternity Pay Calculator
Check paternity leave and pay eligibility, work out your £194.32/week entitlement and see your key deadlines for 2026/27.
Open calculatorNotice Pay (PILON) Calculator
Estimate your payment in lieu of notice — statutory vs contractual notice, uncapped weekly pay, and the tax you’ll actually pay.
Open calculatorMaternity Pay Calculator
Statutory maternity pay for 2026/27 — 90% of earnings for 6 weeks, then £194.32 a week or 90% for 33 weeks, with the qualifying tests.
Open calculatorSick Pay Calculator
Statutory sick pay from day one for 2026/27 — £123.25 a week or 80% of earnings, no waiting days, no earnings threshold.
Open calculatorHoliday Pay Calculator
UK holiday entitlement — 5.6 weeks' paid leave, capped at 28 days, plus 12.07% accrual for irregular-hours workers.
Open calculatorTake-Home Pay Calculator
Salary after income tax, National Insurance and pension for 2026/27 — monthly and annual take-home pay.
Open calculatorPension Contribution Calculator
Auto-enrolment pension contributions for 2026/27 — 8% of qualifying earnings (£6,240–£50,270), 3% employer, 5% employee.
Open calculatorUK inheritance tax calculators
From 6 April 2027, unused pension pots count toward your estate for inheritance tax. Our IHT calculators model both today's rules and the April 2027 change.
Pension Inheritance Tax Calculator
Compare your IHT bill under today's rules vs from 6 April 2027, when unused pension pots join the estate at 40%.
New for 2027Inheritance Tax Calculator
The general UK IHT calculator: £325k + £175k allowances, debts, 7-year gifts and the 36% charity rate.
Open calculatorGifting Allowance Calculator
How the £3,000 annual exemption and 7-year taper relief cut the inheritance tax on your gifts.
Open calculatorFree calculators, done properly
Every tool on this site shows its working — the formula, the exact rates applied, and plain-English notes — so you get a trustworthy figure in seconds, not just a number.
The UK employment calculators implement the actual statutory formulas — the redundancy age bands (0.5×, 1×, 1.5× weeks' pay), the £751 weekly cap, the paternity 26-week service test, the statutory notice ladder — with current 2026/27 rates. Where the rules changed recently, such as paternity leave becoming a day-one right in April 2026, the calculators reflect it.
Results are estimates for guidance, not legal advice. For binding figures or disputes, speak to Acas or an employment adviser. See our disclaimer.