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Job & Income
Corporate Income Tax (CIT) Calc BETA Freelancer & Business Tax BETA Overtime Calculator BETA Salary & Tax Master Social Insurance BETA VIETNAM PIT Calculator HOT
Finance & Banking
Compound Interest Calculator HOT Inflation Calculator (Vietnam) BETA Investment ROI Calculator BETA Loan Calculator Percentage Calculator Savings Interest Calculator BETA
Text Tools
Lorem Ipsum Generator BETA Text Diff Checker Text Formatter - Clear Style Word Counter & Analyzer
Generator Tools
Strong Password Generator UUID Generator
Daily Utilities
BMI Calculator Bookmark Creator Date & Time Master BETA Date Toolkit BETA Lunar Calendar BETA Random Toolkit BETA Unit Converter
Dev Tools
Cron Expression Parser Developer Toolkit Base64 & Hash Toolkit BETA JSON Toolkit HOT JWT Debugger & Decoder QR Code Generator BETA Timestamp Converter BETA URL & Base64 Toolkit BETA zTool Playground HOT
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Compound Interest Calculator

Calculate the future value of your investment with compound interest. Includes monthly contributions and customizable compounding frequency.

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JSON Toolkit

Format, validate, and convert JSON. Includes Tree View and data processing tools.

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VIETNAM PIT Calculator

Comparison between tax law 2025 and earlier vs Resolution 110/2025/UBTVQH15 (effective from Jan 1, 2026)

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zTool Playground

Online HTML/CSS/JS editor, runs directly in your browser, server-less sharing.

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Job & Income

BETA

Corporate Income Tax (CIT) Calc

Corporate Income Tax Calculator

BETA

Freelancer & Business Tax

Calculate tax for withholding (10%) or personal business households.

BETA

Overtime Calculator

Calculate accurately your overtime pay based on Vietnam Labor Law

Salary & Tax Master

Full Salary & Tax Suite

BETA

Social Insurance

Social Insurance & Pension Calculator

HOT

VIETNAM PIT Calculator

Comparison between tax law 2025 and earlier vs Resolution 110/2025/UBTVQH15 (effective from Jan 1, 2026)

Finance & Banking

HOT

Compound Interest Calculator

Calculate the future value of your investment with compound interest. Includes monthly contributions and customizable compounding frequency.

BETA

Inflation Calculator (Vietnam)

See how much your money has lost or gained value over time.

BETA

Investment ROI Calculator

Calculate your Return on Investment (ROI) and Annual Yield.

Loan Calculator

Calculate monthly payments for loans, amortized schedule with reducing balance or flat rate options.

Percentage Calculator

Calculate percentages easily. Find percentage of a number, percentage change, or what percentage one number is of another.

BETA

Savings Interest Calculator

Calculate bank savings interest quickly. Supports term deposits with end-of-term or monthly interest payout.

Text Tools

BETA

Lorem Ipsum Generator

Generate placeholder text for designs and mockups.

Text Diff Checker

Compare two texts and highlight differences (additions, deletions, changes).

Text Formatter - Clear Style

Remove formatting and clean up text copied from web pages.

Word Counter & Analyzer

Count words, analyze frequency, and convert case (Case Converter).

Generator Tools

Strong Password Generator

Generate secure, random passwords instantly.

UUID Generator

Generate random UUIDs/GUIDs (V1, V4, V7) instantly.

Daily Utilities

BMI Calculator

Calculate Body Mass Index (BMI). Evaluate your weight status based on international standards.

Bookmark Creator

Create a personal bookmark set for your browser with your favorite ZTools.

BETA

Date & Time Master

All-in-one time tool: Calculate distance, add/subtract dates, and Unix conversion.

BETA

Date Toolkit

Calculate distance between dates, add/subtract time, and countdown.

BETA

Lunar Calendar

Convert Solar to Lunar calendar, view Can Chi and Good Hours

BETA

Random Toolkit

Generate random numbers, pick items from list, and roll dice.

Unit Converter

Convert length, weight, volume, area, temperature, and more.

Dev Tools

Cron Expression Parser

Convert Cron expressions into human-readable text.

Developer Toolkit

Comprehensive toolkit for developers

BETA

Base64 & Hash Toolkit

Quickly encode/decode Base64 and generate cryptographic hashes like MD5 and SHA256.

HOT

JSON Toolkit

Format, validate, and convert JSON. Includes Tree View and data processing tools.

JWT Debugger & Decoder

Decode, verify and inspect JSON Web Tokens (JWT) safely in your browser.

BETA

QR Code Generator

Generate high-quality QR codes for URLs, text, and more. Works entirely offline for privacy.

BETA

Timestamp Converter

Convert between Unix timestamps and human-readable dates.

BETA

URL & Base64 Toolkit

Encode/Decode URL, Base64 and parse URL structure quickly.

HOT

zTool Playground

Online HTML/CSS/JS editor, runs directly in your browser, server-less sharing.

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