Free online tools for everyday work.

Image Converter

Convert any image to JPG, PNG or WebP, with quality and size controls.

JPG to PNG Converter

Turn JPG files into PNG right in your browser — drag in one image or thirty.

PNG to JPG Converter

Turn PNG files into JPG right in your browser — drag in one image or thirty.

WebP to JPG Converter

Turn WebP files into JPG right in your browser — drag in one image or thirty.

WebP to PNG Converter

Turn WebP files into PNG right in your browser — drag in one image or thirty.

PNG to WebP Converter

Turn PNG files into WebP right in your browser — drag in one image or thirty.

JPG to WebP Converter

Turn JPG files into WebP right in your browser — drag in one image or thirty.

Image Compressor

Shrink photos and graphics for email, websites and upload limits — see exactly how many KB you save.

Image Resizer

Resize one image or a whole batch to exact pixels or a percentage — aspect ratio locked by default.

Length Converter

Convert any length between metric and imperial units — instantly, both ways.

CM to Inches Converter

Turn centimetres into inches for heights, screen sizes, clothing and DIY measurements.

Inches to CM Converter

Convert inches to centimetres exactly — handy for screens, waist sizes, paper and furniture.

Weight Converter

Convert any weight between metric and imperial units, including stone.

KG to LBS Converter

Convert kilograms to pounds for body weight, luggage allowances and parcel shipping.

LBS to KG Converter

Convert pounds to kilograms exactly — for gym weights, body weight and parcels.

Temperature Converter

Convert temperatures between °C, °F and K — for weather, cooking, science and health.

Celsius to Fahrenheit Converter

Convert °C to °F for weather forecasts, oven temperatures and fever checks.

Fahrenheit to Celsius Converter

Convert °F to °C for US recipes, weather and thermometer readings.

Profit Margin Calculator

Enter what an item costs you and what you sell it for.

Markup Calculator

Add a percentage on top of your cost and see the selling price, the profit per unit and what that markup means as a margin.

Discount Calculator

Find the final price after a percentage off — including “extra 10% off the sale price” deals and sales tax.

Break-Even Calculator

See how many sales you need before a product, shop or side project stops losing money.

Stripe Fee Calculator

Work out the Stripe fee on a payment and your payout — or reverse it to find what to charge so you receive an exact amount.

PayPal Fee Calculator

See how much PayPal keeps from a payment, or how much to invoice so you end up with the amount you need.

Tile Calculator

Enter the area and tile size to get the number of tiles, boxes and cost — with grout joints and a waste allowance included.

Paint Calculator

Enter your room size and get the paint you need — walls, optional ceiling, doors and windows subtracted, any number of coats.

Flooring Calculator

Work out the square footage (or m²) of flooring to buy, how many boxes that is, and what it will cost.

Concrete Calculator

Get the volume of concrete for a slab or patio, and how many premix bags or cubic yards to order.

Gravel Calculator

Turn the size and depth of a driveway, path or garden bed into tons and cubic yards of gravel.

Electricity Cost Calculator

Find out what any appliance really costs to run — per hour, day, month and year — from its wattage and your electricity rate.

Percentage Calculator

Answer the three everyday percentage questions — “what is 15% of 240?”, “36 is what percent of 240?” and “36 is 15% of what?”

Percentage Increase & Decrease Calculator

Compare an old and new value to get the percentage increase or decrease — for prices, salaries, traffic, weight or anything else.

Age Calculator

Get an exact age — years, months and days — on today’s date or any date you choose.

Date Difference Calculator

Count how many days, weeks and weekdays fall between two dates — for deadlines, notice periods, trips and countdowns.

JSON Formatter & Validator

Paste JSON to pretty-print it, minify it, or find exactly where it’s broken.

Base64 Encoder & Decoder

Convert text to Base64 and back, with emoji and accented characters handled correctly.

URL Encoder & Decoder

Encode values for query strings, encode whole URLs, or decode percent-encoded links back to plain text.

JWT Decoder

Paste a JSON Web Token to see its header, claims and expiry in plain English.

Unix Timestamp Converter

Convert epoch timestamps to readable dates and back, with automatic seconds/milliseconds detection and a live clock.

UUID Generator

Create cryptographically random v4 UUIDs, one at a time or in bulk.

Word Counter

Paste or type your text for an instant count of words, characters, sentences, reading time and keyword frequency.

Case Converter

Type once and get every case style side by side — for headlines, code variables, file names and fixing accidental caps lock.

Slug Generator

Turn any title into a clean URL slug — accents removed, symbols stripped, one title per line for bulk.

UTM Builder

Add UTM parameters to any link so Google Analytics shows exactly which campaign, email or post sent the visitor.

SERP Snippet Preview

See your page the way searchers will — with live pixel-width measurement for title tags and meta descriptions.