Everyday Calculators Hub

Quick calculators, text tools and web utilities such as a tip calculator and favicon generator for school, work and home. 19 free tools and 4 guides, all in one place.

This hub collects the everyday calculators and text tools on DailyToolLab, along with the guides that explain how they work. They are built for students, office workers, writers, parents and anyone who needs a quick, reliable answer without opening a spreadsheet or installing an app.

The percentage calculator covers the questions people ask most: what is X% of Y, what percent one number is of another, and how much something increased or decreased. It is handy for discounts, test scores, pay rises and price changes. The age calculator works out an exact age in years, months and days, the total number of days lived and the date of the next birthday, handling leap years and month ends correctly. The word and character counter counts words, characters, sentences and reading time, and lists the keywords you use most, which helps with essays, social posts, meta descriptions and product copy. The unit converter switches between metric and imperial units for length, weight, volume and temperature, with feet and inches, pounds and ounces and tape-measure fractions, which is useful for recipes, forms, travel and product sizes. The favicon and app icon generator turns one logo into ICO, PNG, Apple touch and Android/PWA icons plus a web manifest, without uploading the file. The tip calculator and bill split works out the tip, the total and each person's share, with tax and round-up options.

Each tool shows the formula it uses and a worked example, so you can check any answer by hand, and each links to a longer guide below. Everything runs in your browser and nothing you enter is sent to our server or stored. We add new everyday tools over time, and they will appear on this page as soon as they go live.

All everyday tools

Every tool →

Percentage Calculator

X% of Y, what percent, percentage change, increase or decrease.

Age Calculator

Exact age in years, months and days, total days and next birthday.

Word & Character Counter

Count words, characters, sentences, reading time and top keywords.

Unit Converter

cm to inches, feet and inches, kg to lbs, ml to cups and °C to °F.

Tip Calculator & Bill Split

Tip, total and amount per person, with tax and round-up options.

Favicon & App Icon Generator

Make ICO, PNG, Apple touch and PWA icons from one logo, plus a web manifest.

HEIC to JPG

Convert iPhone HEIC photos to JPG in your browser. Nothing is uploaded.

QR Code Generator

Create a downloadable QR code for a link or short text, in your browser.

Spin the Wheel

Paste names, spin a fair wheel and pick a random winner. Saves your list.

Countdown Timer

Online timer with alarm, presets and a days-until countdown you can share.

Stopwatch

Accurate stopwatch with laps, best and slowest lap, and CSV export.

Barcode Generator

Code 128, EAN-13, UPC-A, Code 39 and ITF-14 with check digits. PNG, SVG or bulk ZIP.

VAT & GST Calculator

Add or remove VAT or GST with dated official rates for the UK, EU, PK, IN, AU, CA and UAE.

BMI Calculator

Body mass index in metric or imperial, with category and healthy weight range.

Loan / EMI Calculator

Monthly EMI, total interest and an amortization schedule, with extra payments.

Date Difference Calculator

Days, weeks, months and business days between two dates, or add/subtract time.

Email Signature Generator

Build a Gmail or Outlook signature with your shop details and an optional logo. Nothing is uploaded.

Color Palette from Image

Extract 5–8 colours from a photo, with copyable HEX and RGB. Nothing is uploaded.

Hours & Timesheet Calculator

Add up a week from start and end times, with unpaid breaks, overnight shifts and optional overtime.

Guides on this topic

Topic clusters

Pick the job you are doing: each group pairs the main tool with the guides that explain it.

Word count & writing length

How long a blog post, essay or product description should be, and how to count it.

Tips & splitting bills

Restaurant tips, tax and each person's share of the bill.

Dates & age

Exact age, days between dates and the next birthday.

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  • All guides: every DailyToolLab guide grouped by topic.