Run the numbersbefore you switch
Free calculators for speed, data, coverage and the real cost of an offer. Each one shows its assumptions, and nothing you type leaves your browser.

12 free calculators
Pick a calculator
Each one shows its assumptions, so you can see exactly how the answer is worked out.
- Internet speed calculatorEstimate the download and upload speed your household needs at its busiest time of day.Open the calculator
- Bundle or separate?Compare the total cost of an internet and TV bundle with buying each service on its own.Open the calculator
- Mobile data calculatorEstimate how much mobile data you use each month and which plan size fits you.Open the calculator
- Finance a phone or bring your own?Compare financing a phone through your plan with buying it outright on a bring-your-own-phone plan.Open the calculator
- Alarm system cost calculatorCompare the total cost of a DIY alarm and a professionally installed, monitored system over up to five years.Open the calculator
- Contents coverage calculatorAdd up what your belongings would cost to replace and get a suggested amount of contents coverage.Open the calculator
- Deductible calculatorSee how many claim-free years it takes for a higher deductible to pay for itself.Open the calculator
- Life insurance needs calculatorEstimate how much life insurance your family might need, based on income, debts and what you already have.Open the calculator
- Online degree cost calculatorEstimate the total cost and time to finish an online certificate, bachelor's or master's.Open the calculator
- Website cost calculatorAdd up hosting, renewals, domain, email and extras to see what your website really costs over time.Open the calculator
- True cost of a promoCompare two promo offers over the months you'll keep them, including the regular price after the promo ends.Open the calculator
- Moving date plannerEnter your moving date and get a dated checklist for internet, insurance, movers and address changes.Open the calculator
How our calculators work
Honest numbers, shown in the open
- Private by designEverything is worked out on your device. No sign-up, and nothing you type leaves your browser.
- Assumptions on the pageEvery calculator lists the rates and formulas it uses, right under the result, so you can check them.
- Estimates, not quotesUse the answer to plan and compare. Confirm the final price, taxes and terms with the provider before you sign.
Ready to pay less for the plans you already use every month?*
