Free Tools & Calculators

Health & Fitness

BMI Calculator

Calculate your Body Mass Index and see if you're at a healthy weight.

Use Tool 205 uses

📝

Text Tools

Word Counter

Count words, characters, sentences, and paragraphs.

Use Tool 186 uses

📋

Developer Tools

JSON Formatter

Format, validate, and beautify JSON data.

🎂

Date & Time

Age Calculator

Calculate your exact age in years, months, and days.

Use Tool 195 uses

💱

Financial

Currency Converter

Convert between world currencies with live exchange rates.

Use Tool 193 uses

📐

Converters

Length Converter

Convert between metric and imperial length units.

🎨

Design & CSS

Color Picker

Pick colors and get HEX, RGB, and HSL values.

🧮

Math & Education

Scientific Calculator

Full-featured scientific calculator with advanced functions.

💰

Financial

Salary Calculator

Calculate your take-home pay after tax, ACC, and KiwiSaver.

Use Tool 271 uses

🔥

Health & Fitness

Calorie Calculator

Calculate your daily calorie needs for weight goals.

Use Tool 166 uses

Converters

Weight Converter

Convert between kilograms, pounds, and other weight units.

🧾

Financial

Tax Calculator

Calculate your income tax based on NZ tax brackets.

Use Tool 245 uses

Financial

Financial calculators and tools for budgeting, investments, taxes, loans, and money management.

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💱

Currency Converter

Convert between world currencies with live exchange rates.

Use Tool 193 uses

💰

Salary Calculator

Calculate your take-home pay after tax, ACC, and KiwiSaver.

Use Tool 271 uses

🧾

Tax Calculator

Calculate your income tax based on NZ tax brackets.

Use Tool 245 uses

🏠

Mortgage Calculator

Calculate your mortgage repayments and total interest.

Use Tool 214 uses

🏦

Loan Calculator

Calculate loan repayments for personal and car loans.

Use Tool 166 uses

📈

Compound Interest Calculator

Calculate compound interest growth over time.

Use Tool 187 uses

📊

Investment Calculator

Project your investment growth with regular contributions.

Use Tool 153 uses

🐖

Savings Calculator

Plan your savings goals and see how quickly you can reach them.

Use Tool 173 uses

View all Financial tools

Health & Fitness

Health and fitness calculators for BMI, calories, macros, heart rate, and wellness tracking.

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BMI Calculator

Calculate your Body Mass Index and see if you're at a healthy weight.

Use Tool 205 uses

🔥

Calorie Calculator

Calculate your daily calorie needs for weight goals.

Use Tool 166 uses

🫀

BMR Calculator

Calculate your Basal Metabolic Rate.

🥗

Macro Calculator

Calculate your ideal protein, carbs, and fat macros.

Use Tool 147 uses

🥩

Protein Calculator

Calculate your daily protein needs.

Use Tool 160 uses

📏

Body Fat Calculator

Estimate your body fat percentage.

🎯

Ideal Weight Calculator

Calculate your ideal body weight based on height.

Use Tool 147 uses

💧

Water Intake Calculator

Calculate how much water you should drink daily.

View all Health & Fitness tools

Converters

Unit converters for length, weight, temperature, volume, area, speed, and more.

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📐

Length Converter

Convert between metric and imperial length units.

Weight Converter

Convert between kilograms, pounds, and other weight units.

🌡️

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin.

Use Tool 139 uses

🧪

Volume Converter

Convert between liters, gallons, and other volume units.

Use Tool 164 uses

📏

Area Converter

Convert between square meters, acres, and other area units.

Use Tool 173 uses

🏎️

Speed Converter

Convert between km/h, mph, and other speed units.

Use Tool 154 uses

⏱️

Time Converter

Convert between hours, minutes, seconds, and more.

Use Tool 155 uses

💾

Data Storage Converter

Convert between bytes, KB, MB, GB, TB, and more.

Use Tool 156 uses

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Design & CSS

Design tools and CSS generators for colors, gradients, shadows, borders, and visual effects.

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🎨

Color Picker

Pick colors and get HEX, RGB, and HSL values.

🌈

Color Converter

Convert between HEX, RGB, HSL, and other color formats.

Use Tool 150 uses

🖌️

Gradient Generator

Create beautiful CSS gradients with custom colors.

Use Tool 145 uses

🎭

Color Palette Generator

Generate harmonious color palettes for your designs.

Use Tool 165 uses

🔲

Box Shadow Generator

Create CSS box shadows with visual controls.

⬜

Border Radius Generator

Create CSS border-radius with individual corner controls.

Use Tool 146 uses

🔤

PX to REM Converter

Convert between pixels and rem units for CSS.

Use Tool 63 uses

🔡

PX to EM Converter

Convert between pixels and em units for CSS.

Use Tool 183 uses

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Developer Tools

Developer utilities for encoding, hashing, formatting, regex testing, and code generation.

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📋

JSON Formatter

Format, validate, and beautify JSON data.

🔣

Base64 Encoder/Decoder

Encode and decode text to/from Base64.

Use Tool 72 uses

🔗

URL Encoder/Decoder

Encode and decode URLs and query strings.

Use Tool 73 uses

📝

HTML Encoder/Decoder

Encode and decode HTML entities.

Use Tool 71 uses

#️⃣

Hash Generator

Generate MD5, SHA-1, SHA-256, and other hash values.

Use Tool 148 uses

🔐

Password Generator

Generate secure random passwords.

Use Tool 152 uses

🆔

UUID Generator

Generate unique UUIDs (v1, v4) for development.

Use Tool 167 uses

🔎

Regex Tester

Test and debug regular expressions.

Use Tool 145 uses

View all Developer Tools tools

Math & Education

Math calculators and educational tools for fractions, percentages, GPA, statistics, and more.

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🧮

Scientific Calculator

Full-featured scientific calculator with advanced functions.

➗

Fraction Calculator

Add, subtract, multiply, and divide fractions.

Ratio Calculator

Calculate ratios, proportions, and scaling.

Use Tool 175 uses

🔢

GCD & LCM Calculator

Find the Greatest Common Divisor and Least Common Multiple.

Use Tool 149 uses

🔢

Prime Number Checker

Check if a number is prime and find prime factors.

Use Tool 150 uses

🎲

Random Number Generator

Generate random numbers within a range.

🔄

Number Base Converter

Convert between binary, decimal, hex, and octal.

Use Tool 144 uses

🏛️

Roman Numeral Converter

Convert between Roman numerals and Arabic numbers.

Use Tool 145 uses

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Date & Time

Date and time tools for age calculation, countdowns, time zones, timestamps, and scheduling.

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🎂

Age Calculator

Calculate your exact age in years, months, and days.

Use Tool 195 uses

📆

Date Difference Calculator

Calculate the number of days between two dates.

Use Tool 167 uses

🗓️

Date Add/Subtract

Add or subtract days, weeks, months from a date.

Use Tool 69 uses

🌍

Timezone Converter

Convert times between different time zones.