Tool collections

Wraplet topics

Curated collections of related tools for calculators, finance, health, student, and developer workflows.

Free Online Calculators

Use free online calculators for age, percentages, dates, BMI, finance, school, and everyday math.

Estimate loan payments, savings growth, compound interest, discounts, salaries, mortgage payments, VAT, fuel costs, and electricity costs.

Use free health calculators for BMI, calorie estimates, and pregnancy due date estimates with clear limitations.

Count words and characters, convert text case, generate placeholder text, and test regular expressions in your browser.

Calculate date differences, business days, birthday countdowns, timestamps, and time zone conversions.

Use free student tools for GPA, weighted grades, percentages, word counts, date planning, and unit conversions.

Convert units, image sizes, aspect ratios, colors, URLs, Base64, JSON, and other common formats.

Use practical daily tools for QR codes, passwords, random numbers, quick calculations, and everyday decisions.

Format, validate, compare, and convert JSON in your browser with free developer utilities from Wraplet.

Decode JWT payloads, inspect token claims, and generate hashes locally in your browser.

Encode and decode Base64 strings, URLs, and web-safe text locally with Wraplet.

Generate UUID values quickly for development, testing, fixtures, and database records.

Format SQL queries for readability and debugging with a private browser-based SQL formatter.

Test regular expressions and inspect matches in your browser with a fast regex utility.

Convert Unix timestamps and ISO dates with a browser-based date and time utility.

A fast collection of private browser-based tools for JSON, JWT, Base64, SQL, regex, UUIDs, timestamps, and more.