Basic Calculator
Addition, subtraction, multiplication, division
42+ Free Tools - Updated 2026
Free Online Calculator Tools, Converters & Utilities
Discover our comprehensive collection of 42+ free online calculators, unit converters, image editing tools, PDF utilities, and developer tools. All tools work instantly in your browser - no download required, no signup needed, completely free forever. Trusted by 10 million+ users monthly.
Try: "percentage", "currency", "image", "BMI", "mortgage", "fraction", "PDF"
Showing 30 tools
Calculators
Professional calculators for mathematics, finance, health, and education
Scientific Calculator
Trigonometry, logarithms, powers & more
Percentage Calculator
Calculate percentages, discounts, tips
Discount Calculator
Calculate sale prices and savings
Fraction Calculator
Add, subtract, multiply, divide fractions
Time Calculator
Add, subtract time durations & differences
GPA Calculator
Calculate grade point average
Grade Calculator
Calculate test scores and final grades
Finance Calculators
Financial planning tools for loans, investments, and retirement
Loan EMI Calculator
Calculate loan EMI & amortization
Mortgage Calculator
Calculate home loan payments & affordability
Compound Interest
Calculate investment growth over time
Investment Calculator
Calculate investment returns & portfolio growth
Retirement Calculator
Plan your retirement savings & income
Health & Fitness
Tools for health tracking, fitness planning, and wellness
Unit Converters
Convert between different units and currencies
Image & PDF Tools
Professional image editing, compression, conversion, and PDF manipulation tools
Image Compressor
Reduce image size without quality loss
Image Resizer
Resize images to custom dimensions
Image Cropper
Crop and trim images precisely
Image to PDF
Convert JPG, PNG images to PDF documents
Merge PDF
Combine multiple PDF files into one
Image to Text (OCR)
Extract text from images instantly
Developer Tools
Essential tools for developers and programmers
JSON Formatter
Format, validate, and beautify JSON
Base64 Encoder/Decoder
Encode and decode Base64 strings
Hash Generator
Generate MD5, SHA-1, SHA-256 hashes
Password Generator
Generate secure random passwords
QR Code Generator
Generate QR codes for URLs and text
UUID Generator
Generate UUID v4 and GUID strings
Lorem Ipsum Generator
Generate placeholder text for designs
URL Encoder/Decoder
Encode and decode URL strings
Color Picker
Pick colors and convert formats
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