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Less guesswork.
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From splitting the bill to planning your savings. Simple, free calculators built around life in the UK.
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THE EVERYDAY EXAMPLE
What does it cost
to keep it running?
1,000 W appliance2 hours a day
Estimated cost over 30 days£15.00At an example tariff of 25p/kWh
Work out your electricity cost Numbers made useful.
Made for the everydayPounds & penceMiles & UK MPGClear methods
YOUR EVERYDAY TOOLKIT
A useful answer starts here.
16 handy tools.
One less thing to work out.
Money & shopping
Salary & pay
Convert gross pay into annual, monthly, weekly, daily and hourly amounts.
Open calculator Money & shoppingVAT calculator
Add VAT to a net price or remove VAT from a VAT-inclusive total.
Open calculator Numbers & unitsPercentage calculator
Find a percentage, compare two amounts or calculate percentage change.
Open calculator Money & shoppingDiscount calculator
See your sale price and savings, including an optional second discount.
Open calculator Money & shoppingLoan repayments
Estimate monthly repayments and interest for a fixed-rate repayment loan.
Open calculator Money & shoppingSavings & compound interest
Explore how a starting balance and monthly deposits could grow.
Open calculator Home & travelElectricity cost
Estimate the running cost of an appliance using your own tariff.
Open calculator Home & travelFuel & journey cost
Work out fuel use and cost for a journey in miles, using UK MPG.
Open calculator Home & travelMPG & fuel economy
Calculate UK MPG from a fill-up and convert it to US MPG and L/100 km.
Open calculator Everyday lifeAge calculator
Find age in years, months and days on a date you choose.
Open calculator Everyday lifeDate difference
Count calendar days and weeks between two dates.
Open calculator Everyday lifeAdult BMI
Calculate body mass index from height and weight in metric or UK units.
Open calculator Everyday lifeTip & bill split
Add an optional tip and share a bill equally without losing track of pennies.
Open calculator Numbers & unitsUnit converter
Convert common lengths, weights and temperatures without a lookup table.
Open calculator Money & shoppingMonthly budget
Compare monthly take-home income with common household expenses.
Open calculator Numbers & unitsTime duration
Calculate hours between two times, with an optional next-day finish and unpaid break.
Open calculatorNo matching tools. Try “pay”, “date” or “cost”, or choose All tools.
SIMPLE BY DESIGNUseful numbers.
Useful numbers.
No unnecessary fuss.
Start with your own figures. Get an answer you can understand. See how it was worked out.
A little about us →Know what goes into the answer
Clear assumptions, examples and formulas help you put each result in context.
Ready whenever you need them
No account, subscription or app download. Just open a tool and get started.