The Utility Toolbox for Developers

Free Online Tools for
Developers & Data.

Audit JSON, convert YAML, calculate precision finances, and generate design assets. The ultimate 100% local workspace where your data never leaves the browser.

Health

Tools for monitoring and improving your health.

BMI Calculator Calorie Calculator Age Calculator

Finance

Financial planning and estimation tools.

Mortgage Calculator Loan Calculator Compound Interest +5

Math

Everyday mathematical calculations.

Percentage Calculator Average Calculator

Date & Time

Time zones, countdowns, and duration.

Time Zone Converter Date Difference

Converters

Convert between different units of measurement.

Length Converter Weight Converter Temperature Converter +2

Text Tools

Analyze and manipulate text.

Word Counter Case Converter Markdown to HTML

Security & Privacy

Tools to protect your digital life.

Password Generator Hash Generator

Developer Tools

Format, validate, and debug code.

JSON Formatter JSON Validator JSON Minifier +24

Design

Colors, assets, and design utilities.

Color Converter QR Code Generator Aspect Ratio Calculator +1

Productivity

Tools to boost focus and efficiency.

Pomodoro Timer
security
PrivateZero Data Input
bolt
PersistentOffline Logic Engine
storage
Local AnalysisBrowser-Side Logic
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