🔄 Percentage conversion calculators

Written by Rohan Mehta Updated
Editorial details Reviewed by Vikram Sen Verified · Methodology · Accuracy policy

Quick answer

Convert fractions, decimals, ratios, and percents with one canonical workflow per direction.

Fraction a/b to %: (a / b) × 100 · Percent r to decimal: r / 100 · Percent r to fraction: r/100 simplified

Best for: Homework, recipe scaling, survey reporting, spreadsheet formatting.

Also see: Basic math · Ratios hub · Percentage guide

Switch among fractions, decimals, ratios, and percents using the conversion that matches your starting format.

Key facts

Fraction to percent Divide numerator by denominator, then × 100.
Category Mathematics / representation
Related concepts Ratio normalization, mixed numbers, repeating decimals.

Definitions

Percent as fraction

Rate over 100, simplified—e.g. 25% = 1/4.

Ratio to percent

Normalize parts to a common total, then express one part as a percent of 100.

Comparison table

Topic Guidance
Exact vs rounded Display rounding differs from symbolic simplification—check each tool's notes.
Ratio vs fraction Ratios may have multiple parts; fractions are two-term unless normalized.

❓ Frequently Asked Questions

Why so many fraction-specific URLs?

They capture long-tail queries; this hub is the topical parent for general conversion intent.

How do mixed numbers convert?

Use the fraction tools that accept whole + proper parts, or convert to improper fractions first.

Glossary references

Pair percent language with conversion pages when you mix fractions, decimals, and ratios.