Day to Day Tools

88 free tools · no sign-up · nothing uploaded

Small tools for the things
you do every day

Work out a percentage, check how old you are to the day, see what a loan actually costs, count the words in an essay, or shrink a photo that's too big to upload. Everything runs in your browser and none of it asks for your email.

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Percentage Calculator Every kind of percentage question, solved with the working shown. Everyday Calculators Age Calculator Your precise age in years, months, days, and the countdown to next birthday. Everyday Calculators Date Difference Days between two dates, including business-days-only counting. Everyday Calculators Loan / EMI Calculator Monthly payment, total interest and a year-by-year payoff schedule. Money & Finance BMI Calculator BMI in metric or imperial, with the caveats spelled out. Health & Fitness Word Counter Live word, character and reading-time counts against your limit. Text & Writing Unit Converter Length, weight, temperature, volume, speed and storage in one place. Converters Image Resizer Shrink photos to fit an upload limit. Nothing leaves your device. Image Tools Password Generator Cryptographically random passwords, with a real crack-time estimate. Privacy & Security Discount Calculator Sale price, amount saved, and whether stacked discounts really add up. Everyday Calculators Salary Converter Hourly, monthly and annual pay converted, accounting for real hours. Money & Finance Time Zone Converter One time across several cities, with the workable hours highlighted. Converters Calorie Calculator Daily calorie needs and macros, with the uncertainty stated plainly. Health & Fitness Cooking Converter Cups to grams by ingredient, plus oven temperatures and tin sizes. Converters Grade Calculator Weighted course grade. And the mark you need on the final. Everyday Calculators Mortgage Affordability Roughly what you could borrow, and the deposit and fees needed. Money & Finance Text Cleaner Fix pasted text: line breaks, duplicates, whitespace and sorting. Text & Writing Image Cropper Crop to any ratio or a circle. Nothing leaves your device. Image Tools Find & Replace Bulk find and replace, with whole-word and regex matching. Text & Writing Text Compare See exactly what changed between two versions of a document. Text & Writing EXIF Viewer See the GPS and camera data hidden in a photo, then strip it. Privacy & Security Image to PDF Photos into one PDF, in order, without uploading anything. Image Tools Blur & Redact Permanently hide parts of a screenshot before you share it. Image Tools Shoe Size Converter UK, US, EU and cm shoe sizes, for men, women and children. Converters Electricity Cost What each appliance really costs you to run, per year. Money & Finance Recipe Scaler Rescale a whole recipe by servings, with sensible rounding. Converters Running Pace Pace, finish time and splits for any distance. Health & Fitness Split Expenses Who owes whom after a trip, in the fewest payments. Money & Finance One Rep Max Your estimated max from a set you have already lifted. Health & Fitness Markup & Margin Markup is not margin. Convert between them and price properly. Money & Finance Debt Payoff Snowball or avalanche, compared across all your debts at once. Money & Finance Rent vs Buy Which is actually cheaper over the years you will stay. Money & Finance Calories Burned Energy burned by activity, and why it is less than you think. Health & Fitness Freelance Rate The rate you actually need, not the one that sounds right. Money & Finance Invoice Generator A proper invoice as a PDF, with nothing uploaded anywhere. Money & Finance Caffeine How much of that coffee is still there at bedtime. Health & Fitness

Browse by category

Everyday Calculators Percentages, ages, dates and the quick maths you do every week. 17 tools Money & Finance Loans, savings and salary maths you can actually understand. 19 tools Health & Fitness Body metrics, calorie targets and hydration, explained properly. 15 tools Text & Writing Counting, cleaning and reformatting words for essays and posts. 10 tools Converters Units, time zones and formats translated instantly. 12 tools Image Tools Resize and compress photos without uploading them anywhere. 8 tools Privacy & Security Strong passwords and everyday privacy helpers. 7 tools

Why these and not the other hundred tool sites

Your data never leaves your device

There is no server doing the maths. Text you paste, photos you resize and passwords you generate are processed by your own browser and disappear when you close the tab. That's not a promise, it's just how the tools are built.

The answer, and why it's the answer

A number on its own is easy to mistrust. Every calculator shows the formula it used and what the result means, so you can check it, explain it to someone else, or spot when you've typed the wrong thing.

Fast on a bad connection

Pages are static HTML with a few kilobytes of JavaScript. No frameworks, no spinners, no cookie wall before you can use the thing you came for.

Free, and honest about why

The tools are funded by ads placed around the content. Never inside it, never disguised as buttons. No paywalls, no "upgrade to export", no account.

From the blog

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How Do Fractions and Decimals Convert? Explainers

How Do Fractions and Decimals Convert?

Divide the top by the bottom to get a decimal. Going back means using place value and simplifying. Why some fractions repeat forever and which ones to memorise.

 How Do Roman Numerals Work? Explainers

How Do Roman Numerals Work?

Seven letters, added together, with a smaller letter before a larger one meaning subtract. The rules, the common mistakes, and why clocks often show IIII instead of.

 How Do Shoe Sizes Work Across Countries? Converters

How Do Shoe Sizes Work Across Countries?

UK, US, EU and Japanese sizes use different scales and different starting points. What each measures, why the conversions disagree, and the one measurement that alwa.