All tools

See how your savings grow with compound interest and regular contributions.

Estimate your monthly mortgage payment and total interest over the loan term.

Calculate the monthly payment, total interest, and total cost of any fixed-rate loan.

Split shared expenses among a group and see who owes whom the least transfers.

Work out the tip and split the bill between any number of people.

Find the sale price and how much you save, with optional sales tax.

Calculate total return and annualized return (CAGR) between a starting and ending value.

Find a percentage of a number and the percentage change between two values.

Convert numbers to Roman numerals and back, from 1 to 3999.

Convert between metric and imperial length units.

Convert between kilograms, pounds, ounces, grams and more.

Convert between Celsius, Fahrenheit and Kelvin.

Convert between bytes, KB, MB, GB, TB and binary units.

Convert between liters, milliliters, gallons, cups and more.

Convert between km/h, mph, m/s, knots and more.

Convert between square meters, acres, hectares and more.

Beautify, minify, and validate JSON with clear error messages.

Encode text to Base64 or decode Base64 back to text, with URL-safe support.

Generate shades, tints and color harmonies from any base color.

Generate strong, random passwords with configurable length and character sets.

Convert colors between HEX, RGB and HSL with a live preview.

Blend two colors at any ratio and see the fused result and gradient.

Decode and inspect the header and payload of a JSON Web Token.

Identify the nearest named color and every code for any color.

Percent-encode text for safe use in URLs, or decode encoded URLs back to text.

Compute SHA-1, SHA-256, SHA-384, and SHA-512 hashes of any text.

Generate cryptographically random version-4 UUIDs in bulk.

Count words, characters, sentences, lines, and estimated reading time.

Generate placeholder text by paragraphs, sentences or words.

Convert text between UPPER, lower, Title, Sentence, camelCase, snake_case and kebab-case.

Turn any title into a clean, URL-safe slug.

Calculate exact age in years, months, and days from a date of birth.

Find the number of days, working days, and the y/m/d span between two dates.

Convert Unix timestamps to human-readable UTC dates and see the current epoch time.

Convert between currencies using live exchange rates, with a manual fallback.

Calculate your Body Mass Index (BMI) from height and weight, in metric or imperial units.