Free calculators and tools

Every one of these runs entirely in your browser. No account, no ads, no tracking, and none of your figures are sent to a server. They are part of Palarid, a private personal workspace with several hundred tools.

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Money

Mortgage calculatorMonthly payment, total interest, and what a rate change actually costs Rent vs buyThe full comparison, including the costs of buying people forget UK tax estimatorIncome tax and National Insurance from a gross salary Debt payoff calculatorSnowball versus avalanche, with the real interest difference Emergency fundHow much you need, and when you will reach it Compound interestWhat regular saving becomes over time Pension calculatorProjected pot and what it might pay you Net worth trackerAssets minus liabilities, tracked over time Subscription trackerThe true annual cost of everything billed monthly Tip calculatorTip, service charge and bill split, plus UK tipping rules

Health

TDEE calculatorDaily calorie needs and a macro split for cut, maintain or bulk BMI calculatorWith an honest account of what BMI does and does not tell you Sleep debt calculatorHow far behind you are, and how to actually catch up

Time and everyday

Date calculatorDays between dates, add or subtract days, weekday lookup Time zone converterCompare cities and find a meeting slot that works Unit converterMetric, imperial, UK and US — kept properly separate Pomodoro timerCustom cycles, long breaks, and a record of focused time QR code generatorStatic codes that never expire and cannot be tracked Habit trackerStreaks and a heatmap, without a subscription
Why these are free, and what the catch is.

There isn't one on these pages. Palarid runs in your browser, so serving a calculator costs almost nothing — there is no per-user database to pay for. We do not sell data and do not run ads. A paid tier is planned later for encrypted sync across devices, which does cost money to run. Everything here will stay free.

These calculators are planning tools, not professional advice. For decisions about your money, health or legal position, speak to someone qualified. About Palarid · Trust Centre