Ratio Calculator

Professional Calculators

Comprehensive collection of ratio and proportion calculators for every profession. Precision tools trusted by designers, engineers, developers, and creators worldwide.

19 Available18 Coming SoonTotal: 37
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Showing 37 of 37 calculators

Basic Calculations

Essential ratio and proportion tools

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Basic Ratio Calculator - Free Online Ratio & Proportion Solver

Professional basic ratio calculator for solving proportions instantly. Calculate ratios, simplify fractions, and solve mathematical proportions with step-by-step accuracy.

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Scale Calculator - Resize with Perfect Proportions

Resize images, blueprints, and designs while maintaining perfect proportions. Our scale calculator provides instant, accurate results for designers, engineers, and creators who need precise dimensional scaling.

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Percentage Ratio Calculator - Convert Ratios & Percentages

Free percentage ratio calculator converts ratios to percentages instantly. Calculate percentage changes & differences with step-by-step solutions.

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Unit Conversion Ratio Calculator - Professional Metric & Imperial Converter

Convert between metric and imperial units with precision ratios for international projects. Professional tool for engineers, architects, and global businesses requiring accurate unit conversions.

Design & Development

Professional tools for designers and developers

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Aspect Ratio Calculator - Professional Image & Video Sizing Tool

Free aspect ratio calculator for designers, developers, and content creators. Calculate perfect proportions for responsive web design, social media content, and video production with instant results.

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Golden Ratio Calculator - Divine Proportion & Perfect Design Tool

Calculate golden ratio proportions for perfect design harmony. Apply the divine proportion (φ = 1.618) to create visually pleasing layouts, rectangles, and artistic compositions with mathematical precision.

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Screen Resolution Ratio Calculator - Optimize Multi-Device Design

Calculate optimal screen resolutions and DPI ratios for multi-device design projects. Professional tool for responsive design, device testing, and pixel-perfect layouts.

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Mobile Design Ratio Calculator - iOS & Android App Design Tool

Calculate perfect mobile app design ratios for iOS and Android devices. Professional tool for responsive mobile interfaces, safe areas, and device-specific proportions with instant results.

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Typography Scale Calculator - Font Size & Modular Scale Generator

Free typography scale calculator with Golden Ratio, Perfect Fourth, Major Third ratios. Generate CSS font hierarchies for responsive web design systems.

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CSS Spacing Calculator - Responsive Design System Tool

Generate CSS spacing scales & modular systems for web design. Calculate responsive margins, padding & layout spacing with mathematical ratios for UI/UX projects.

Photography & Media

Tools for content creators and photographers

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Camera Sensor Ratios - Professional Photography Calculator

Calculate crop factors, equivalent focal lengths, and field of view for all camera sensor formats. Professional tool for photographers comparing Full Frame, APS-C, Micro Four Thirds, and medium format sensors.

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Print Size Calculator - Pixels to Print Size & DPI Tool

Convert pixels to print dimensions with DPI calculator. Determine maximum print sizes, canvas printing, poster sizes & photo quality for photographers.

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Video Aspect Ratio Calculator - Fix Black Bars & Cropping

Free video aspect ratio calculator that fixes black bars, stretching & cropping issues. Perfect dimensions for YouTube, TikTok, Instagram + file size optimizer.

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Social Media Ratio Calculator - Instagram, Facebook, TikTok

Free calculator for Instagram 4:5, Facebook 1.91:1, TikTok 9:16 ratios. Perfect social media image dimensions for maximum engagement across 8 platforms.

Engineering & Technical

Precision tools for technical applications

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Gear Ratio Calculator - Professional Mechanical Engineering Tool

Calculate gear ratios, transmission speeds, torque multiplication, and mechanical advantage. Professional engineering tool for automotive, machinery, and mechanical design applications with instant results.

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Compression Ratio Calculator

Engine compression ratio calculations and specifications

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Construction Ratio Calculator

Building material ratios, concrete mix proportions, and structural calculations

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Electrical Ratio Calculator

Voltage dividers, current ratios, and electrical proportion calculations for circuits

Financial & Business

Business ratio analysis and financial calculations

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Financial Ratio Calculator

Calculate key financial ratios including P/E, debt-to-equity, ROI, and liquidity ratios for investment analysis

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Investment Ratio Calculator

Portfolio allocation ratios, risk-reward calculations, and investment proportion analysis

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Business Metrics Calculator

Key business performance ratios including conversion rates, customer acquisition costs, and growth metrics

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Debt-to-Income Ratio Calculator

Personal finance debt ratios, mortgage calculations, and credit analysis for financial planning

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Mortgage Ratio Calculator

Home affordability ratios, loan-to-value calculations, and mortgage qualification ratios

Lifestyle & Home

Everyday ratio calculations for modern living

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Paint Mixing Ratio Calculator - Perfect Color & Coverage Tool

Calculate perfect paint color mixing ratios, coverage requirements, and room painting quantities. Professional tool for painters, decorators, and DIY enthusiasts with color guides and cost estimates.

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Garden Planning Ratio Calculator

Fertilizer mixing ratios, plant spacing calculations, and garden layout proportions

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Travel Distance & Scale Calculator

Map scale calculations, travel time ratios, and distance proportion tools for trip planning

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Gaming Ratio Calculator

Gaming screen ratios, FOV calculations, and display proportion settings for optimal gaming experience

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Time Management Ratio Calculator

Work-life balance ratios, productivity time allocations, and schedule proportion planning

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Energy Efficiency Ratio Calculator

Home energy consumption ratios, carbon footprint calculations, and sustainability metrics

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Music Theory Ratio Calculator

Musical interval ratios, frequency calculations, and harmonic proportion analysis for musicians