Online calculators,
thoughtfully built.

Processed privately & locally on your device.

No profiling. No clouds. Just you.

Category spotlight

Creator Tools

Simple tools to help create new content or update older ones. Let's worry less about licensing and more about creating.

Tool spotlight

QR Code Generator

Generate one or in bulk. No paywalls, no trackback and ofcourse 100% free.

General Tools

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin in your browser. Free, private, and instant.

Age Calculator

Compute age from date of birth in years, months, and days — with optional live clock and detailed totals. Runs entirely in your browser.

Percentage Calculator

Quick percentage of, change, and share calculations. Free, private, and browser-based — no account required.

BMI Calculator

Body mass index from height and weight with metric or US units and a simple category guide. General guidance only — not medical advice.

Work Hours Calculator

Track hours, breaks, and weekly totals with a timecard grid. Import and export spreadsheets — all processed privately on your device.

Length Converter

Convert millimetres through miles — metric and imperial length units. Free private browser converter.

Weight Converter

Convert milligrams through tonnes, plus ounces, pounds, and stone. Free private browser converter.

Time Zone Converter

Compare a date and time across multiple cities with daylight-saving-aware zones. Free private browser converter.

Financial Tools

Bill & Tips split calculator

Split bills with tip equally or unevenly. Track multiple payers and who owes whom — with visual share charts, all in your browser.

Loan + EMI Calculator

Estimate loan installments, total interest, and payoff timelines. Plan repayments with a free private browser calculator.

Currency Converter

Convert amounts using live-friendly FX rates from the shared Dab Tools rates bundle. Private, free, and browser-based.

Gold & Silver Rates

Browse gold and silver pricing across currencies with grade breakdowns. Uses the shared Dab Tools metals rates bundle.

Creator Tools

Teleprompter Screen

Scroll your script with mirror mode, speed control, and a phone remote for play/pause. Script stays in your browser.

Image Optimiser Tool

Reframe, resize, and optimize images for the web and social. Runs in your browser - nothing is uploaded.

QR Code Generator

Create static QR codes for URLs, WiFi, email, and contacts — or bulk-export hundreds from a CSV. Generated locally in your browser; nothing is uploaded.

Video cover generator

Make YouTube thumbnails and social covers from a photo, blank, or pattern — with text, overlays, and per-platform framing in your browser.

Tech Tools

Un-Shorten Protection

See where a short link really goes before you click. Follows every redirect hop, shows the final destination and strips tracking parameters.

WHOIS Lookup

Look up who registered a domain or IP — registrar, expiry, nameservers, DNS records, SPF and DMARC, hosting and SSL certificate in one search.

Islamic Tools

Zakat Calculator

Calculate Zakat for gold, silver, stocks, cash, and savings with a private, browser-based calculator. Split payments, import spreadsheets, and plan your Zakat year.

Hijri Date Converter

Convert between Gregorian and Hijri calendars with multiple calculation methods. Private browser-based date converter.

FAQs

How does the privacy of my data work? Do you store my financial information on your servers?

Your calculations stay on your device. dab.tools does not send your financial inputs to our servers for storage — there is no account and no cloud copy of what you enter.

The flexible start date feature is interesting. How does it work for planning my Zakat?

In the Zakat calculator you can choose when your Zakat year starts so planning matches your personal or lunar schedule, then track progress toward your due date.

What is the "split Zakat amount" feature and how can it help me?

This feature takes your total Zakat due and divides it into manageable monthly installments. It provides you with a payment plan, helping you budget for your Zakat obligation over up to 12 months rather than paying a large lump sum all at once.

How does the spreadsheet import/export feature work?

You can export your worksheet to a spreadsheet file for your records, and import a compatible file later to continue where you left off — still stored locally unless you choose to share the file yourself.

Can I really set a reminder for next year with a 10-day deliberation period? How?

Yes. The Zakat calculator can remind you ahead of your next due date and include a short deliberation window so you have time to review assets before confirming.