Featured Online Tools
Start with Tool Base’s most commonly useful utilities for converting files, compressing media, formatting content, and completing everyday digital tasks.
Age Calculator
Calculate exact calendar age.
Calculators & Converters
Amortization Calculator
Build a full amortization schedule for a fixed-rate loan.
Calculators & Converters
Area Calculator
Calculate area for rectangle, triangle, circle, and trapezoid.
Calculators & Converters
Audio Compressor
Compress audio files to reduce size.
Audio Tools
Audio Trimmer
Trim audio to an exact start and end segment.
Audio Tools
Background Remover
Remove image backgrounds and download a transparent PNG where supported.
Image Tools
Base64 Encoder
Encode text to Base64.
Developer Tools
Base64 File Converter
Convert files to and from Base64.
Security & Encoding
Basic Calculator
Add, subtract, multiply, or divide two numbers.
Calculators & Converters
Car Loan Payment Calculator
Estimate a car loan monthly payment.
Specialized Calculators
Character Counter
Count characters with or without spaces.
Text Tools
Circular Image Cropper
Crop images into a circular cutout with transparent corners.
Image Tools
College GPA Calculator
Calculate college GPA from credits and grades.
Specialized Calculators
Color Contrast Checker
Measure WCAG color contrast.
Design & Creative
Compound Interest Calculator
Calculate compound interest with flexible compounding frequency.
Calculators & Converters
Concrete Calculator
Estimate concrete volume for slabs, footings, or columns.
Calculators & Converters
CSS Button Generator
Generate HTML and CSS for a button.
Design & Creative
CSV to JSON Converter
Convert CSV files to JSON.
Document & Data Tools
Date Calculator
Add or subtract days from a date, or find a date offset.
Calculators & Converters
Discount Calculator
Calculate sale price after discount.
Calculators & Converters
DOCX to PDF Converter
Convert DOCX documents to PDF.
Document & Data Tools
EXIF Remover
Remove common EXIF metadata from images before sharing.
Image Tools
Favicon Generator
Create a PNG favicon from an image.
Design & Creative
Final Grade Needed Calculator
See what you need on the final exam.
Specialized Calculators
Find & Replace Tool
Find and replace text safely.
Text Tools
FLAC to MP3 Converter
Convert FLAC audio to MP3 format.
Audio Tools
Font Generator
Create stylish Unicode text fonts to copy and paste.
Design & Creative
Fuel Cost Calculator
Estimate trip fuel cost from distance, efficiency, and price.
Calculators & Converters
HTML Formatter
Format HTML with readable indentation.
Developer Tools
Image Color Picker
Sample colors from an image and copy HEX, RGB, or HSL values.
Image Tools
Image Compressor
Reduce image file size while balancing quality.
Image Tools
Image Cropper
Crop images to the exact area or ratio you need.
Image Tools
Image Resizer
Resize images to custom dimensions while controlling aspect ratio.
Image Tools
Investment Calculator
Project investment growth with recurring contributions.
Calculators & Converters
IP Subnet Calculator
Calculate IPv4 network, broadcast, and host range from CIDR.
Calculators & Converters
JavaScript Formatter
Format JavaScript source safely.
Developer Tools
JPG Compressor
Compress JPG and JPEG images with quality control.
Image Tools
JPG to PDF
Create a PDF from JPG images.
PDF Tools
JPG to PNG
Convert JPG and JPEG images to PNG format.
Image Tools
JPG to WebP
Convert JPG images to modern WebP format.
Image Tools
JSON Formatter
Format and beautify JSON.
Developer Tools
JSON to CSV Converter
Convert JSON files to CSV.
Document & Data Tools
JSON to YAML Converter
Convert JSON files to YAML.
Document & Data Tools
JSON Validator
Validate JSON syntax online.
Developer Tools
JWT Decoder
Decode JWT header and payload.
Security & Encoding
Keyboard Tester
See keys as they are pressed.
Utilities
Length Converter
Convert metric and imperial lengths.
Calculators & Converters
Loan Calculator
Calculate payment, total interest, and payoff for a fixed-rate loan.
Calculators & Converters
M4A to MP3 Converter
Convert M4A audio to MP3 format.
Audio Tools
Markdown to HTML Converter
Convert Markdown to HTML.
Document & Data Tools
Markdown to PDF Converter
Convert Markdown to PDF.
Document & Data Tools
Matrix Calculator
Add, multiply, transpose, and invert small matrices.
Calculators & Converters
MD5 Hash Generator
Generate MD5 checksums.
Security & Encoding
Meme Generator
Caption your own image and download a PNG.
Design & Creative
Mortgage Calculator
Estimate monthly mortgage payments, interest, and amortization.
Calculators & Converters
MOV to MP4 Converter
Convert MOV videos to MP4.
Video Tools
MP3 to AAC Converter
Convert MP3 audio to AAC format.
Audio Tools
MP3 to WAV Converter
Convert MP3 audio to WAV format.
Audio Tools
MP4 to GIF Converter
Convert MP4 clips to animated GIF.
Video Tools
MP4 to MP3 Converter
Extract MP4 audio to MP3.
Video Tools
MP4 to WAV Converter
Extract MP4 audio to WAV.
Video Tools
Ohms Law Calculator
Solve voltage, current, resistance, or power using Ohm’s law.
Calculators & Converters
Online Notepad
Write notes and download them as text.
Typing & Productivity
PDF Compressor
Reduce PDF file size online.
PDF Tools
PDF Merger
Combine multiple PDFs into one file.
PDF Tools
PDF Password Protector
Add a password to a PDF.
PDF Tools
PDF Splitter
Split PDFs by pages or ranges.
PDF Tools
PDF Text Extractor
Copy text from PDF documents.
PDF Tools
PDF to DOCX Converter
Convert PDF files to DOCX.
Document & Data Tools
PDF to JPG
Convert PDF pages to JPG images.
PDF Tools
PDF to PNG
Convert PDF pages to PNG images.
PDF Tools
PDF to Text
Convert PDF documents to TXT.
PDF Tools
Percentage Calculator
Calculate percentages and percent change.
Calculators & Converters
PNG to JPG
Convert PNG images to JPG with a compatible background.
Image Tools
PNG to SVG
Convert PNG raster artwork into an SVG-style vector representation.
Image Tools
Pomodoro Timer
Focus and break intervals with a live timer.
Typing & Productivity
QR Code Generator
Create downloadable QR codes.
Security & Encoding
Quadratic Formula Calculator
Solve ax² + bx + c = 0 with real or complex roots.
Calculators & Converters
Reading Time Calculator
Estimate reading time from word count.
Text Tools
Regex Tester
Test regular expressions safely.
Developer Tools
Remove Extra Spaces
Clean repeated whitespace from text.
Text Tools
Retirement Calculator
Project retirement savings with contributions and growth.
Calculators & Converters
ROI Calculator
Measure return on investment as gain and percentage.
Calculators & Converters
Scientific Calculator
Scientific functions with degrees/radians, powers, roots, and logs.
Calculators & Converters
Screen Resolution Checker
Show this device’s screen resolution.
Utilities
Secure Password Generator
Generate strong random passwords.
Security & Encoding
SHA-256 Hash Generator
Generate SHA-256 digests.
Security & Encoding
SQL Formatter
Format SQL queries for readability.
Developer Tools
Statistics Calculator
Compute mean, median, variance, and standard deviation.
Calculators & Converters
Stopwatch
Elapsed time with laps.
Typing & Productivity
SVG to PNG
Convert scalable SVG graphics into PNG images.
Image Tools
Temperature Converter
Convert °C, °F, and Kelvin.
Calculators & Converters
Text Case Converter
Convert text between letter cases.
Text Tools
Text Cleaner
Clean whitespace and blank lines.
Text Tools
Text Diff Checker
Compare two texts and highlight changes.
Text Tools
Time Zone Converter
Convert date/time between time zones.
Calculators & Converters
Tip Calculator
Split tips and bill totals.
Calculators & Converters
Triangle Calculator
Solve triangle sides and area from SSS, SAS, or ASA data.
Calculators & Converters
Typing Speed Test
Test your typing speed and accuracy online.
Typing & Productivity
Unit Converter
Convert everyday measurement units.
Calculators & Converters
Unix Timestamp Converter
Convert Unix time to dates.
Security & Encoding
UUID Generator
Generate UUID v4 identifiers.
Security & Encoding
Video Compressor
Compress video to reduce file size.
Video Tools
Video Resizer
Resize video dimensions.
Video Tools
Video Thumbnail Extractor
Extract a thumbnail image from video.
Video Tools
Video Trimmer
Trim video to a time range.
Video Tools
WAV to MP3 Converter
Convert WAV audio to MP3 format.
Audio Tools
WebP to JPG
Convert WebP images to widely compatible JPG files.
Image Tools
Weighted GPA Calculator
Credit-weighted GPA from your grade scale.
Specialized Calculators
Word Counter
Count words, characters, and more.
Text Tools
XML to JSON Converter
Convert XML files to JSON.
Document & Data Tools
YAML to JSON Converter
Convert YAML files to JSON.
Document & Data Tools