Percentage Calculator

Math Percentage Calculators

Our Math Percentage Calculators cover the core percentage operations used in schoolwork, business math, budgeting, science, and everyday problem‑solving. This cluster brings together tools for adding and subtracting percentages, finding what percent one number is of another, converting percentages into ratios and proportions, and turning test scores into clear percentage scores.

Each calculator includes step‑by‑step formulas, real examples, and instant results — making this section ideal for students, teachers, and anyone who needs fast, accurate percentage math.

All Math Percentage Tools

• Percentage Addition Calculator — Increase any number by a chosen percentage. Perfect for markups, tips, raises, interest, and tax calculations. Includes formula breakdown and worked examples.
• Percentage Subtraction Calculator — Reduce any number by a percentage. Ideal for discounts, markdowns, depreciation, and percent decrease. Includes step‑by‑step math and examples.
• Percentage of Total Calculator — Find what percent a part is of a whole. Useful for grades, budgets, surveys, progress tracking, and any part‑to‑whole comparison.
• Percent to Ratio & Proportion Calculator — Convert percentages into simplified ratios or proportions. Great for recipes, mixtures, maps, classroom math, and scaling.
• Test Score Percentage Calculator — Turn any test or exam score into a percentage instantly. Ideal for students checking results or teachers grading assignments.

What You Can Do With These Calculators

This math cluster helps you solve the most common percentage questions:

• Increase or decrease values using percent addition and subtraction.
• Compare numbers using percent‑of‑total calculations.
• Convert percentages into ratios for recipes, mixtures, and proportions.
• Calculate grade percentages from raw test scores.
• Understand percentage changes, comparisons, and part‑to‑whole relationships.

All tools are free, fast, and designed for clarity — making them ideal for homework, business calculations, financial planning, and everyday decision‑making.

Looking for other calculators? Visit our percent calculator homepage for the full list of tools across math, everyday use, and science.