TOOLS · 23 FREE
Tools that do the sums
Calculators and checkers for the questions that come before spending: what a discount really comes to, what your energy costs where you live, which broadband reaches your door, and whether a sale price is lower than last month's. The calculators show their working, and each tool names where its figures come from. The guides explain the rest.
- Free
- Sources named
- UK figures
Money
Sums worked out on your device, with the working shown.
- Discount calculator
What do I pay with 20% off, what do two discounts come to, and which deal is cheaper?
NewYour numbers - Take-home pay calculator
What reaches my bank from my salary after tax, National Insurance, student loan and pension?
NewHMRC's 2026/27 rates - Student loan repayments
What do I repay a month, and will my student loan be cleared or written off first?
NewGOV.UK's 2026/27 thresholds - Christmas budget planner
How do I share out what I can afford for Christmas, and what should I put aside each week?
NewYour numbers
Bills
Energy, broadband and phones, on figures I keep up to date.
- Energy comparison
What would each tariff cost my home over the next year, against the price cap?
Tariffs and Ofgem's cap - Price cap by region
What are the unit rates and standing charges where I live?
Ofgem's cap - Appliance running costs
What does a heater, tumble dryer or anything else cost to run where I live?
NewOfgem's cap - Broadband checker
Which broadband speeds and 4G and 5G networks reach my address?
Ofcom's data - Social tariffs
Can I get cheaper broadband or mobile on Universal Credit?
Providers' published prices - Phone finder
Which phone and plan suit me, and what do they cost over the contract?
Retailers' feeds - SIM-only plans
What does a SIM-only plan cost for the data I use?
Retailers' feeds - What it costs
What does each plan of a membership or subscription cost, and is a rise on the way?
NewSellers' own price pages - Airport parking
Which car parks serve my airport, and how do they work for my flights?
Car parks' published details
Shopping
Gifts, prices and discounts across the shops I track.
- Refund rights checker
It's faulty, late or I've changed my mind: can I get my money back, and by when?
NewUK consumer law - Is it a real deal?
Is this price actually low, has it been cheaper, and is it cheaper at another shop?
NewMy price records - Gift finder
What could I get them, for the occasion and what I want to spend?
UK shops' products - Flower finder
Which flowers suit the occasion, the colours and my budget?
UK florists' products - Book finder
What should I read next, or give someone who reads?
NewUK bookshops' products - Price drops
What's just got cheaper at the shops I track?
My price records - Ballpark price game
How close can I guess what five real things cost today?
NewUK shops' products - Black Friday price check
Are Black Friday prices really lower than in October?
My price records - Student, NHS and other discounts
Which shops give students, NHS staff or my group a discount?
Shops' own offers - Store cards
Can I keep my loyalty cards on my phone and share them?
Your cards, on your phone