Free online converters

Breaks a millisecond count into seconds, minutes, hours, days and weeks, plus a plain-English duration.

Spells out letters and numbers using the NATO phonetic alphabet for clear radio-style reading.

Turns PHP serialized strings into readable JSON.

Converts rich clipboard content into HTML limited to semantic tags like paragraphs, headings, lists and links.

Paste formatted content from a web page or document and get clean Markdown back, with tables, links and lists preserved.

Rasterizes SVG code, files or URLs into PNG or JPEG at a size, padding and background you choose.

Converts pasted colored terminal output into HTML, RTF or text, with an option to save it as a Gist.

Converts 10 or 13 digit Unix timestamps into UTC and local date and time.

Converts pasted Rich Text Format into HTML with inline styles for bold, colors and backgrounds.

Converts an oven recipe's time and temperature into air fryer settings.

Converts butter between sticks, cups, tablespoons, grams and ounces.

Converts a finger circumference or diameter in cm into ring sizes for different countries.

Converts between dry and cooked pasta weight to portion servings.

Converts fresh herb amounts to dried herbs and back.

Swaps garlic between fresh cloves, powder, minced and granulated forms.

Converts grams to cups and back for around 20 common ingredients.

Adjusts a microwave cooking time between different wattages.

Converts between oil and butter in baking recipes.

Converts uncooked rice to cooked yield for portion planning.

Converts between fresh, instant, active dry and other yeast types.

Converts cooking volumes and weights such as cups, spoons, grams and ounces for common ingredients.

Translates a weight in pounds into cups for common baking staples.

Converts shoe sizes between US, UK, EU and other systems.

Converts power in watts to current in amps for DC, single-phase or three-phase supplies.