All 37 tools

Work out the full monthly cost of a home loan - principal, interest, tax, insurance and PMI - with a year-by-year amortisation schedule.

Find the monthly payment, total interest and full repayment schedule for any fixed-rate loan - car, personal, student or business.

See how savings and investments grow over time, with regular contributions and any compounding frequency, plus a year-by-year balance table.

Work out a percentage of a number, express one number as a percentage of another, or find the percentage increase or decrease between two values.

Calculate body mass index from height and weight in metric or imperial units, see which WHO category it falls in, and get the healthy weight range for your height.

Estimate the calories you burn each day using the Mifflin-St Jeor equation, with targets for maintaining, losing or gaining weight.

Find an exact age in years, months and days from any date of birth, plus the total in weeks, days and hours and the countdown to the next birthday.

Count the days, weeks and working days between two dates, or add and subtract days, weeks, months and years from any date.

A full scientific calculator with trigonometry, logarithms, powers, roots and factorials - type expressions directly or use the keypad.

Calculate a grade point average from any number of courses on the unweighted 4.0 or weighted 5.0 scale, with credit hours taken into account.

Work out your current weighted grade from assignments completed so far, and find the score you need on what remains to hit a target.

Count words, characters, sentences and paragraphs as you type, with reading time, speaking time and the most-used words in your text.

Count characters with and without spaces as you type, and see live progress against SMS, X, meta description and title tag limits.

Convert text between upper, lower, title, sentence, camel, Pascal, snake, kebab and constant case, plus alternating and inverse case.

Generate strong random passwords using your browser's cryptographic randomness, with entropy shown in bits and no password ever transmitted.

Generate random numbers in any range using cryptographic randomness, with options for no repeats and sorted output - for draws, sampling and testing.

Create QR codes for links, Wi-Fi networks, email, phone and SMS. Download as PNG or SVG, with no watermark, no account and no expiry.

Format, validate and minify JSON with precise error locations, optional key sorting and a structural summary of what the document contains.

Encode and decode Base64 with full Unicode support, including a URL-safe alphabet, and encode any file to Base64 without uploading it.

Generate RFC-compliant UUIDs in bulk - random v4 or time-sortable v7 - with formatting options and no server involvement.

Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes from text or any file, computed entirely on your device.

Percent-encode and decode URLs and query parameters, with a breakdown of any URL into its origin, path and decoded parameters.

Compress images by quality or to a target file size, in batches, with the original never leaving your device.

Resize an image to exact pixel dimensions or a percentage, with aspect ratio locking and presets for common social and web sizes.

Convert images between JPG, PNG, WebP and AVIF in batches, with quality control and transparency handled correctly.

Convert JPG and JPEG photos to lossless PNG in batches, entirely inside your browser.

Convert PNG images to JPG with adjustable quality and transparency flattened to white, all inside your browser.

Convert WebP images to PNG with transparency preserved, for software that will not open WebP files.

Combine any number of PDFs into one document in the order you choose, without uploading a single page.

Extract specific pages, split into one file per page, or break a document into fixed-size chunks - without uploading it.

Shrink a PDF either losslessly, keeping text sharp and selectable, or aggressively by redrawing pages as images - with the trade-off stated plainly.

Turn PDF pages into JPG or PNG images at any resolution, choosing which pages to convert, with everything rendered in your browser.

Convert centimetres to inches and back using the exact international factor, with a reference chart and the formula shown.

Convert kilograms to pounds and back with the exact international factor, plus a reference chart and stone conversions.

Convert °C to °F and back with the formula shown, plus a reference chart of everyday and body temperatures.

Convert feet to metres and back with the exact international factor, plus a chart covering heights, room sizes and altitudes.

Convert miles to kilometres and back with the exact factor, plus speed limits, running distances and a reference chart.