Overview
Percentage Increase Calculator is a free online tool that instantly computes percentage changes between two values. It supports both increases and decreases, displaying negative results in red. Users can enter any two of three fields (original value, new value, percentage change) and the third auto-calculates. It is ideal for salary raises, price increases, stock growth, and property value changes.
Sudoku Printable is a free online generator that creates unlimited sudoku puzzles in seconds. Choose from 19 variants including Standard, Diagonal, Windoku, Odd/Even, Knight, Jigsaw, and more. Select difficulty (Easy, Medium, Hard, Evil), grid size (4×4, 6×6, 9×9, 16×16), paper format (A4, Letter, A5, Legal, Tabloid, A3), and font size. Download a clean PDF or print directly – no registration required.
Feature Comparison
| Feature | Percentage Increase Calculator | Sudoku Printable |
|---|---|---|
| Primary Function | Computes percentage changes between two values instantly | Generates unlimited printable sudoku puzzles in various formats |
| Input Method | Enter any two of three fields (original, new, percentage) – auto-calculates the third | Select grid size, difficulty, variant, paper format, and count via dropdowns |
| Output | Real-time numeric result with step-by-step formula display and plain English explanation | Clean PDF or direct print with optional answer keys |
| Customization | Three-field auto-calculation; supports both increases and decreases | 19 variants, 4 grid sizes, 6 paper formats, 4 difficulty levels |
| User Interface | Minimalist, single-page tool with live updates as you type | Settings panel with live page preview before export |
| Registration Required | No | No |
| Target Audience | Professionals, students, investors, anyone needing quick percentage change calculations | Teachers, puzzle enthusiasts, parents, seniors, anyone wanting screen-free brain training |
| Accessibility | Web-based, works on any device with a browser | Web-based, generates printable PDFs for offline use |
Pricing
Both products are completely free to use with no registration or payment required. There are no limits on usage.
Pros and Cons
Percentage Increase Calculator
Pros:
- Instant auto-calculation with no button clicks
- Handles both increases and decreases (negative results in red)
- Step-by-step formula display for learning and verification
- Three-field flexibility – solve for any missing value
- Plain English results make it easy to understand
Cons:
- Limited to percentage change calculations only
- No advanced statistical or financial functions
- No offline mode – requires internet connection
Sudoku Printable
Pros:
- Huge variety of puzzle variants and grid sizes
- Customizable paper format and font size for perfect printing
- Every puzzle is unique with guaranteed valid solution
- Answer keys included for self-checking
- Suitable for all ages and skill levels
Cons:
- 16×16 grids are still in beta (may not have unique solutions)
- No interactive solving – purely print-based
- Limited to sudoku puzzles only
Verdict
Choose Percentage Increase Calculator if you need a fast, reliable tool for calculating percentage changes in salaries, prices, investments, or any numeric comparison. Choose Sudoku Printable if you want unlimited, customizable sudoku puzzles for brain training, classroom activities, or screen-free entertainment. Both are free and excel in their specific niches.
Percentage Increase Calculator
Sudoku Printable