Small tools that save you time.
Calculate, convert, transform and solve everyday tasks in seconds. Free and no registration required.
Percentage Calculator
Work out a percentage of a number, a percentage share, or a percentage change.
Discount Calculator
See the final price after a discount and exactly how much you save.
VAT Calculator
Add VAT to a net price or remove it from a gross price, at any rate.
Age Calculator
Find your exact age in years, months and days — and your next birthday.
Days Between Dates
Count the days, weeks and months between any two dates.
Working Days Calculator
Count business days between two dates, skipping weekends and holidays.
Time Between Two Times
Work out the duration between two clock times, including overnight.
Work Hours Calculator
Add up a week of shifts with breaks — and optional pay.
Calculators
Percentages, discounts, VAT, ratios and the everyday calculations people actually need.
6 toolsDate & Time
Age, dates, working days, hours and time calculations.
6 toolsText
Words, characters, lines, text cleaning and transformations.
7 toolsConverters
Length, weight, temperature, storage and other unit conversions.
5 toolsMoney
Prices, VAT, discounts, percentages and everyday financial calculations.
6 toolsFiles
File size, storage and format helpers. More file tools are on the way.
1 toolImages
Image helpers that run locally in your browser. Coming soon.
Coming soonHome
Household, renovation and materials calculators. Coming soon.
Coming soonUtilities
Useful odds and ends that do not belong anywhere else.
Coming soonAll Tools
24 tools available right now. Filter by category or use the search box above.
Percentage Calculator
Work out a percentage of a number, a percentage share, or a percentage change.
Rule of Three Calculator
Solve simple proportions: if A gives B, what does C give?
Discount Calculator
See the final price after a discount and exactly how much you save.
VAT Calculator
Add VAT to a net price or remove it from a gross price, at any rate.
Price with VAT Calculator
Turn a net price into the final price your customer pays.
Price Before VAT Calculator
Work backwards from a price that already includes VAT.
Age Calculator
Find your exact age in years, months and days — and your next birthday.
Days Between Dates
Count the days, weeks and months between any two dates.
Working Days Calculator
Count business days between two dates, skipping weekends and holidays.
Date After X Days
Add or subtract days, weeks or months from a date.
Time Between Two Times
Work out the duration between two clock times, including overnight.
Work Hours Calculator
Add up a week of shifts with breaks — and optional pay.
Word Counter
Count words, characters, sentences and paragraphs as you type.
Character Counter
Count characters with and without spaces, against common limits.
Line Counter
Count total, non-empty, unique and duplicate lines in a list.
Reading Time Calculator
Estimate how long a text takes to read or to say out loud.
Remove Duplicate Lines
Clean a list by deleting repeated lines, keeping the order.
Sort Lines Alphabetically
Sort any list A–Z, Z–A, by number or by length.
Uppercase / Lowercase Converter
Change text to UPPERCASE, lowercase, Title Case and more.
Celsius to Fahrenheit
Convert temperatures between °C, °F and Kelvin, both ways.
Kilograms to Pounds
Convert kg to lb and back, with stones and ounces too.
Kilometers to Miles
Convert km to miles and back, with metres, feet and pace.
Centimeters to Inches
Convert cm to inches and back, with feet and inches for height.
MB to GB Converter
Convert between bytes, KB, MB, GB and TB — decimal or binary.
No tools in that category yet — more are on the way.
Why Utilario
Most small tasks do not deserve an app, an account or a subscription. You need a number, a count or a converted value, and then you want to get on with your day. Utilario is built around that one idea: open the page, do the thing, leave.
Every tool here runs in your browser. Your text, your dates and your numbers stay on your device — nothing is uploaded, nothing is stored and no sign-up is ever requested. Pages are plain HTML with a few kilobytes of JavaScript, so they load quickly even on a slow connection.
New tools are added regularly. If something you use often is missing, tell us — the list is shaped by what people actually ask for.