Ratio Calculator

The Ratio Calculator is a purpose-built mathematical utility that handles the arithmetic, statistical, and academic calculations that come up in school, professional work, and everyday problem-solving. Whether you are computing percentage change between two values, simplifying a fraction to its lowest terms, scaling a recipe ratio, running descriptive statistics on a dataset to get mean, median, mode, standard deviation, and range in one pass, converting numbers between binary, octal, decimal, and hexadecimal bases, rounding to the correct number of significant figures for a lab report, calculating your weighted GPA from credit hours and grades, or figuring out the minimum score you need on a final exam to reach your target grade, this tool gives you the answer instantly with clear, step-by-step methodology where applicable. The percentage calculator covers percent-of-a-number, percentage increase and decrease, and reverse-discount lookups. The statistics calculator accepts comma-separated datasets of any reasonable size and returns all standard descriptive measures. The GPA tool supports credit-hour weighting so that a four-credit course counts proportionally more than a two-credit elective. Significant-figure rounding follows the standard scientific convention for reporting measured quantities. All computation runs locally inside your browser — the numbers and datasets you enter are never transmitted or stored on any server. The tool is designed for students working through algebra, statistics, and computer-science assignments, teachers preparing grading spreadsheets, business professionals analyzing financial data, engineers performing quick unit-aware calculations, and anyone who wants a clean, ad-free calculator interface that shows its work. No account is required, there are no usage limits, and there is no advertising.

1. Input your mathematical values, datasets, or fractions into the fields.
2. Select the specific calculation mode if applicable.
3. View the simplified fractions, percentages, or statistics computed.
4. Check the step-by-step breakdown or values display.

The Ratio Calculator replaces tedious arithmetic and manual spreadsheets, giving you a clean calculator interface to verify steps and totals instantly without ads.

• Computes complex math formulas in real time.
• Aggregates standard statistical values for datasets.
• Calculations run locally in your browser for instant results.