Tools

Explore free online developer tools by category: Text, Conversion, Data, and more.

Lookup

Tools for looking up information about various entities.

IP Lookup

Find geographical and network information for IPs.

#ip
#lookup
#location
#network

Encode & Decode

Tools for encoding, decoding, and cryptography.

Base64 Encoder/Decoder

Encode and decode Base64 text or files with ease.

#base64
#encode
#decode
#convert

Hex Encoder / Decoder

Convert text or files into hexadecimal and back.

#hex
#encode
#decode
#convert

HTML Encoder / Decoder

Encode and decode HTML entities safely.

#html
#encode
#decode
#convert

URL Encoder/Decoder

Encode and decode URLs with support for multiple standards.

#url
#encode
#decode
#convert

Conversion

Tools for unit, format, and data conversion.

CSV to JSON Converter

Convert CSV files into structured JSON with customizable field options.

#csv
#json
#convert
#data

JSON to CSV Converter

Convert JSON data into CSV for spreadsheets and reports.

#csv
#json
#convert
#data

Timestamp Converter

Convert Unix timestamps into readable dates and back.

#timestamp
#convert
#time

Calculator

Perform common calculations and conversions, such as unit, currency, and time.

Age Calculator

Work out exact age and next birthday details.

#age
#birthday
#countdown

APR / APY Converter

Convert between annual percentage rate and yield.

#apr
#apy
#finance

Basic Calculator

A simple calculator for everyday arithmetic operations.

#calc
#scientific
#expression

BMI / BMR / TDEE

Calculate body mass index, basal metabolic rate, and daily energy use.

#bmi
#bmr
#tdee
#health

Combinatorics Calculator

Compute factorials, permutations, and combinations.

#nCr
#nPr
#factorial

Compound Interest

Calculate interest growth with compounding options.

#interest
#fv
#pv
#annuity

Currency Converter

Convert currencies using live exchange rates.

#fx
#currency
#rates

Date Difference

Find the difference between two dates or add/subtract days.

#date
#diff
#business-days

Geometry Area & Volume

Calculate area and volume for shapes and solids.

#area
#volume
#geometry

GPA Calculator

Compute GPA from course credits and grades.

#gpa
#grade

Hash Generator

Generate MD5, SHA and other hash values for text or files.

#hash
#md5
#sha
#security

Loan Amortization

Build repayment schedules for loans and mortgages.

#loan
#mortgage
#amortization

Percentage Calculator

Work out percentages, discounts, and markups with ease.

#percent
#discount
#markup
#reverse

Quick Stats

Get quick statistics like mean, median, and variance.

#mean
#median
#std
#quantile

Recipe Scaler

Scale recipe ingredients by servings or portion size.

#recipe
#scale
#kitchen

ROI & Break-even

Analyze return on investment and break-even points.

#roi
#break-even
#payback

Subnet Calculator

Work out network, broadcast, and usable IP ranges.

#cidr
#subnet
#network

Tip Splitter

Split bills and tips between people with rounding options.

#tip
#split
#bill

Generators

Tools for generating various data and content.

Lorem Generator

Generate random Lorem Ipsum text for layouts.

#lorem
#generate
#text

Password Generator

Generate secure, customizable passwords for any use.

#password
#generate
#security

Random User Generator

Generate random user profiles online with names, photos, emails, addresses, and phone numbers. Fully customizable for testing, mock data, or sample projects.

#random
#user
#generate
#person

UUID Generator

Generate random UUIDs for use in projects and databases.

#uuid
#generate
#id

Data Tools

Tools for data processing, conversion, and analysis.

CSV Cleaner

Clean CSV files by trimming, fixing quotes and removing empty rows.

#csv
#clean
#trim
#normalize

CSV Group By

Group CSV rows by columns and compute aggregates.

#groupby
#aggregate
#sum
#avg
#count

CSV Lint

Validate CSV files for errors and formatting issues.

#csv
#validate
#delimiter
#encoding

CSV Row Filter

Filter CSV rows with custom conditions and export results.

#filter
#where
#query
#table

Dataset Profiler

Profile CSV datasets with column stats and quality checks.

#profile
#summary
#stats
#quality

Text Processing

Tools for text manipulation, formatting, and analysis.

Text Formatter

Format and clean text with options for case conversion, spacing, and line breaks.

#text
#format
#editor

Media

Tools for image, audio, video, and document processing: compression, conversion, and optimization.

Development

Utilities and helpers for developers.

AES Encryptor/Decryptor

Encrypt or decrypt text using the AES algorithm.

#aes
#encrypt
#decrypt
#security

HTML Formatter

Format HTML code for easier reading and editing.

#html
#format
#dev

JSON Formatter

Format, validate and minify JSON with syntax highlighting and error checks.

#json
#format
#code

Regex Tester

Test and debug regular expressions with real-time matches.

#regex
#test
#dev

XML Formatter

Format XML files with indentation and line breaks.

#xml
#format
#validate
#dev

Other

Miscellaneous tools that do not fit into other categories.