Tools

Exact age in years, months, days. Next birthday countdown.

Body Mass Index with categories and healthy range.

Percent of a number, percent change, and reverse percent.

Sale price and savings from percent discount.

Days between dates, plus add or subtract days.

Split bills and tip amounts with quick math.

Measure distance between two coordinate pairs in miles and kilometers.

Estimate daily calories based on BMR and activity level.

Calculate basal metabolic rate using age, height, and weight.

Estimate body fat percentage with the U.S. Navy formula.

Calculate GPA from letter grades and credit hours.

Length, weight, temperature. Quick conversions.

Instant centimeter to inch conversion.

Convert inches to centimeters quickly.

Convert kilograms to pounds quickly.

Convert pounds to kilograms fast.

Convert Fahrenheit temperatures to Celsius.

Convert Celsius temperatures to Fahrenheit.

Convert currencies using daily reference rates.

Quick EUR to USD currency conversion.

Convert USD to EUR quickly.

Convert a time between time zones instantly.

Words, characters, lines, reading time.

Character count with and without spaces.

Prettify, minify, validate JSON.

Encode text to Base64 or decode Base64 safely.

Simple countdown timer with presets.

Start, stop, lap. Clean and fast.

Shareable countdown with a clean link.

Focus sessions with short and long breaks.

Generate random numbers with range and count.

Generate UUID v4 values fast.

Generate strong passwords with options.

Generate Code 128 barcodes as SVG.

Generate APA / MLA / Chicago citations from a DOI.

Generate APA citations from a DOI fast.

See your public IP and rough location info.

Lookup DNS records (A, AAAA, CNAME, MX, TXT).

Check registrar, age, expiry, status, and nameservers live.

See how old a domain is and when it expires.

See how much browser/device surface your session exposes.

Check whether WebRTC exposes public or local network details.

Resize images quickly in browser. Export JPG/PNG.

Crop image edges and download only what you want.

Convert images between JPG, PNG, and WebP.

Compress multiple images at once in browser.

Combine PDF files in the order you choose.

Split pages into separate PDF downloads or custom ranges.

Rotate all or selected PDF pages and save one clean file.

Keep selected PDF pages in one new file.

Remove selected pages and keep rest in one cleaned PDF.

Shrink images with format and quality control.

Convert images to a single PDF in browser.