LogoPractical Web Tools

Free Forever

All our tools are completely free to use. No account required, No hidden fees and No subscriptions.

Fast & Secure

All processing happens in your browser. Your files never leave your device.

No File Size Limits

Convert files of any size. No restrictions on file sizes or number of conversions.

Batch Processing

Convert multiple files at once to save time and effort.

File Converters

  • PDF Tools
  • Image Converter
  • Video Converter
  • Audio Converter
  • Document Converter
  • eBook Converter
  • Archive Tools
  • File Tools

Calculators

  • Finance Calculators
  • Health Calculators
  • Math Calculators
  • Science Calculators
  • Other Tools

Popular Tools

  • PDF to Word
  • HEIC to JPG
  • Merge PDF
  • Fillable PDF Creator
  • Mortgage Calculator
  • BMI Calculator
  • AI Chat

Company

  • About Us
  • Blog
  • Contact
  • Request a Tool

Legal

  • Privacy Policy
  • Terms of Service
Email Support
Practical Web Tools Logo
Practical Web Tools

Free Tools — Your Files Never Leave Your Device

Practical Web Tools - Convert files & chat with AI — fully offline | Product Hunt

© 2026 Opal Emporium LLC. All rights reserved.

Privacy-first file conversion and AI chat. No accounts, no uploads, no tracking.

  1. Home
  2. /
  3. Math Calculators
  4. /
  5. Ratio Calculator
100% Free - No Signup Required

Free Ratio Calculator - Simplify & Solve

Simplify ratios, solve proportions, and find equivalent ratios instantly.

Files Never Leave Your DeviceInstant ProcessingNo Watermarks
Calculate

Quick Answer

Simplify ratios by dividing by GCF. 12:18 = 2:3. Solve proportions: 2:3 = x:12 → x=8 (cross multiply).

Key Facts about Ratio Calculator:

  • Simplify by dividing by GCF
  • 12:18 simplifies to 2:3
  • Cross multiply to solve
  • Equivalent ratios: 1:2 = 2:4 = 3:6
  • Ratios compare quantities

Why Use Our Ratio Calculator?

Ratio tools:

📊

Simplify Ratios

Reduce to lowest terms.

🔢

Solve Proportions

Find unknown.

📈

Equivalent Ratios

Find matching ratios.

📐

Scale

Scale quantities.

⚡

Instant

Quick results.

🔒

Private

Data stays secure.

Try Ratio Calculator Now

How to Ratio Calculator in 3 Easy Steps

Work with ratios:

1

Enter Ratio

Your ratio values.

2

Select Operation

Simplify or solve.

3

Get Result

See answer.

Start Now - It's Free

Why Use Our Calculator?

Simplify ratios

Solve proportions

Find equivalents

Scale quantities

Calculate
📊
Ratios
Proportions made easy

Common Use Cases for Ratio Calculator

Perfect for:

Cooking

Scale recipes.

Scale

Math

Ratio problems.

Solve

Construction

Scaling plans.

Calculate

Frequently Asked Questions

Everything you need to know about our ratio calculator

How to simplify a ratio?

Divide both by GCF: 12:18 = 2:3.

Divide both numbers by their GCF. 12:18 → divide by 6 → 2:3.

Still have questions? Try the tool yourself!

Calculate

Related Tools You Might Like

Explore more free tools to boost your productivity

Percentage Calculator

Percentages

Fraction Calculator

Fractions

Calculate Now

Free ratio calculator.

Calculate

No signup required. Start using immediately.