Free Tools & Calculators

Essential online tools built specifically for United Kingdom. Calculate taxes, plan your budget, and make informed decisions.

Popular Tools

Health & Fitness

BMI Calculator

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

Use Tool 7 uses

Text Tools

Word Counter

Count words, characters, sentences, and paragraphs.

Use Tool 2 uses

Developer Tools

JSON Formatter

Format, validate, and beautify JSON data.

Use Tool 3 uses

Date & Time

Age Calculator

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

Use Tool 3 uses

Financial

Currency Converter

Convert between world currencies with live exchange rates.

Use Tool 4 uses

Converters

Length Converter

Convert between metric and imperial length units.

Use Tool 3 uses

Design & CSS

Color Picker

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

Use Tool 2 uses

Math & Education

Scientific Calculator

Full-featured scientific calculator with advanced functions.

Use Tool 3 uses

Financial

Salary Calculator

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

Use Tool 2 uses

Health & Fitness

Calorie Calculator

Calculate your daily calorie needs for weight goals.

Use Tool 2 uses

Converters

Weight Converter

Convert between kilograms, pounds, and other weight units.

Use Tool 2 uses

Financial

Tax Calculator

Calculate your income tax based on UK tax brackets.

Use Tool 2 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 4 uses

Salary Calculator

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

Use Tool 2 uses

Tax Calculator

Calculate your income tax based on UK tax brackets.

Use Tool 2 uses

Mortgage Calculator

Calculate your mortgage repayments and total interest.

Use Tool 2 uses

Loan Calculator

Calculate loan repayments for personal and car loans.

Use Tool 2 uses

Compound Interest Calculator

Calculate compound interest growth over time.

Use Tool 2 uses

Investment Calculator

Project your investment growth with regular contributions.

Use Tool 2 uses

Savings Calculator

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

Use Tool 2 uses

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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 7 uses

Calorie Calculator

Calculate your daily calorie needs for weight goals.

Use Tool 2 uses

BMR Calculator

Calculate your Basal Metabolic Rate.

Use Tool 2 uses

Macro Calculator

Calculate your ideal protein, carbs, and fat macros.

Use Tool 2 uses

Protein Calculator

Calculate your daily protein needs.

Use Tool 2 uses

Body Fat Calculator

Estimate your body fat percentage.

Use Tool 2 uses

Ideal Weight Calculator

Calculate your ideal body weight based on height.

Use Tool 2 uses

Water Intake Calculator

Calculate how much water you should drink daily.

Use Tool 2 uses

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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.

Use Tool 3 uses

Weight Converter

Convert between kilograms, pounds, and other weight units.

Use Tool 2 uses

Temperature Converter

Convert between Celsius, Fahrenheit, and Kelvin.

Use Tool 2 uses

Volume Converter

Convert between liters, gallons, and other volume units.

Use Tool 2 uses

Area Converter

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

Use Tool 2 uses

Speed Converter

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

Use Tool 2 uses

Time Converter

Convert between hours, minutes, seconds, and more.

Use Tool 2 uses

Data Storage Converter

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

Use Tool 2 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.

Use Tool 2 uses

Color Converter

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

Use Tool 3 uses

Gradient Generator

Create beautiful CSS gradients with custom colors.

Use Tool 2 uses

Color Palette Generator

Generate harmonious color palettes for your designs.

Use Tool 2 uses

Box Shadow Generator

Create CSS box shadows with visual controls.

Use Tool 2 uses

Border Radius Generator

Create CSS border-radius with individual corner controls.

Use Tool 3 uses

PX to REM Converter

Convert between pixels and rem units for CSS.

Use Tool 2 uses

PX to EM Converter

Convert between pixels and em units for CSS.

Use Tool 2 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.

Use Tool 3 uses

Base64 Encoder/Decoder

Encode and decode text to/from Base64.

Use Tool 3 uses

URL Encoder/Decoder

Encode and decode URLs and query strings.

Use Tool 3 uses

HTML Encoder/Decoder

Encode and decode HTML entities.

Use Tool 3 uses

Hash Generator

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

Use Tool 3 uses

Password Generator

Generate secure random passwords.

Use Tool 3 uses

UUID Generator

Generate unique UUIDs (v1, v4) for development.

Use Tool 2 uses

Regex Tester

Test and debug regular expressions.

Use Tool 2 uses

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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.

Use Tool 3 uses

Fraction Calculator

Add, subtract, multiply, and divide fractions.

Use Tool 3 uses

Ratio Calculator

Calculate ratios, proportions, and scaling.

Use Tool 3 uses

GCD & LCM Calculator

Find the Greatest Common Divisor and Least Common Multiple.

Use Tool 3 uses

Prime Number Checker

Check if a number is prime and find prime factors.

Use Tool 3 uses

Random Number Generator

Generate random numbers within a range.

Use Tool 3 uses

Number Base Converter

Convert between binary, decimal, hex, and octal.

Use Tool 2 uses

Roman Numeral Converter

Convert between Roman numerals and Arabic numbers.

Use Tool 2 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 3 uses

Date Difference Calculator

Calculate the number of days between two dates.

Use Tool 3 uses

Date Add/Subtract

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

Use Tool 3 uses

Timezone Converter

Convert times between different time zones.

Use Tool 3 uses

Unix Timestamp Converter

Convert between Unix timestamps and human dates.

Use Tool 2 uses

Week Number Calculator

Find the week number for any date.

Use Tool 2 uses

Countdown Timer

Create countdowns to important dates and events.

Use Tool 2 uses

Stopwatch

Online stopwatch with lap times.

Use Tool 2 uses

Text Tools

Text utilities for word counting, case conversion, encoding, formatting, and text manipulation.

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Word Counter

Count words, characters, sentences, and paragraphs.

Use Tool 2 uses

Character Counter

Count characters with and without spaces.

Use Tool 3 uses

Case Converter

Convert text to uppercase, lowercase, title case, and more.

Use Tool 3 uses

Lorem Ipsum Generator

Generate placeholder text for designs and layouts.

Use Tool 2 uses

Slug Generator

Convert text to URL-friendly slugs.

Use Tool 2 uses

Text Diff Checker

Compare two texts and highlight differences.

Use Tool 2 uses

Duplicate Line Remover

Remove duplicate lines from text.

Use Tool 2 uses

String Reverser

Reverse text strings and words.

Use Tool 2 uses

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Financial Health & Fitness Converters Design & CSS Developer Tools Math & Education Date & Time Text Tools