Free daily-use calculators and tools

🤖

AI Prompt Optimizer

Improve your AI prompts: strip filler, save tokens, and add role, format and constraints with a large role library.

📆

Days Remaining

Days Remaining Calculator (Hijri & Gregorian)

▶️

CPV Calculator

Calculate cost per view, target spend, or video views.

🎯

CPA Calculator

Calculate cost per acquisition, budget, or conversions.

📣

CPM Calculator

Calculate CPM, target ad spend, or impressions.

🖱️

CPC Calculator

Calculate cost per click, target ad spend, or clicks.

🗓️

School Timetable Builder for Students & Teachers

Build your weekly student or teacher timetable, preview it live, and export it to Excel or PDF.

％

Percentage Calculator

Work out percentages, increase, decrease and the difference between two numbers instantly, with a chart.

🔐

Password Generator

Create strong random passwords or passphrases in your browser, with a strength meter and crack-time estimate.

📈

ROAS Calculator

Calculate return on ad spend, ROI, cost per acquisition and your break-even ROAS, with a chart.

💹

ROI Calculator

Calculate return on investment, net profit and the annualised return for any project.

🔗

UTM Link Builder

Build correctly tagged UTM campaign URLs to track traffic sources in Google Analytics.

🔤

Character & Word Counter

Count characters, words, sentences and reading time live, with social and ad platform limits tracked.

↔️

Arabic RTL Text Fixer

Fix scrambled numbers, punctuation and Latin words in Arabic ad copy before pasting into Meta, Google or TikTok Ads.

🧾

VAT Calculator

Add VAT to an amount or extract it from a VAT-inclusive price at any rate, with a full breakdown.

🏷️

Discount Calculator

Find the sale price and your saving, and work out stacked discounts correctly.

🎂

Age Calculator

Calculate your exact age in years, months and days, plus days lived and time to your next birthday.

📅

Working Days & Leave Calculator

Count working days between two dates, excluding weekends and public holidays.

⚖️

BMI Calculator

Compute your body mass index and see your health category.

Coming soon 📐

Unit Converter

Convert length, weight, temperature, area and volume units instantly.

🌙

Countdown to the Next Ramadan

See how many days, hours and minutes remain until the next Ramadan begins.

🗓️

Hijri / Gregorian Date Converter

Convert any date between Hijri and Gregorian, in either direction, right in your browser.

💵

Tip Calculator

Calculate the right tip and split the bill automatically among everyone at the table.

🎲

Random Number Generator

Generate one or several truly random numbers between any two values, with an optional no-repeat mode.

🎂

Hijri & Gregorian Age Calculator

Calculate your age in both the Hijri and Gregorian calendars from a single birth date.

🧑‍🤝‍🧑

Group Splitter

Paste any list of names and split them randomly into evenly sized groups.

🕐

What Time Is It Now

Your local time and GMT, live — your timezone is detected automatically.

⏱️

Stopwatch

A precise stopwatch with lap recording, right in your browser.

🕰️

24-Hour to 12-Hour Time Converter

Convert any time between 24-hour and 12-hour (AM/PM) format instantly, in either direction.

🎡

Lucky Wheel

Type any names or options and spin the wheel to pick a random winner.

⏳

Countdown Timer

Set a time and start a beautifully designed countdown, with a sound alert when it finishes.

🌸

Countdown to Spring

See how many days and hours remain until the next astronomical start of Spring.

☀️

Countdown to Summer

See how many days and hours remain until the next astronomical start of Summer.

🍂

Countdown to Autumn

See how many days and hours remain until the next astronomical start of Autumn.

❄️

Countdown to Winter

See how many days and hours remain until the next astronomical start of Winter.