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KNOVA Tools
Free browser-based utilities

Free, Fast & Private Online Tools

Useful online utilities designed to be fast, simple and privacy-friendly. Your data stays in your browser whenever possible.

Explore ToolsHow it works

KNOVA Tools

Tools that just work.

Simple utilities for everyday work, development and productivity.

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Popular

QR Code Generator

Create QR codes for URLs, text, WiFi networks and contacts.

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Password Generator

Generate strong, secure passwords directly in your browser.

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Base64 Encoder

Encode and decode Base64 text quickly and privately.

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JSON Formatter

Format, validate and minify JSON with clear error feedback.

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Image Compressor

Compress images locally without uploading them to a server.

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Medical & Health

Health & Wellness Calculators

Simple browser-based calculators for general health and wellness estimates.

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BMI Calculator

Calculate your Body Mass Index using your height and weight.

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BMR & Calorie Calculator

Estimate your Basal Metabolic Rate and daily calorie needs.

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Body Fat Calculator

Estimate body fat percentage using basic body measurements.

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Water Intake Calculator

Estimate your daily water intake based on your body and activity.

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Target Heart Rate Calculator

Estimate maximum heart rate and target exercise heart-rate zones.

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Pregnancy Due Date Calculator

Estimate a pregnancy due date using the last menstrual period.

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Privacy comes first.

KNOVA Tools is designed to process your information locally in your browser whenever technically possible. We do not need your passwords, JSON or images on a server for the core tools.

✓ No account required
✓ Browser-based processing
✓ Fast and lightweight