Free Online Calculators

10 tools — all free, no signup required

Calculate percentages, BMI, loans, tips, and other values.

Age Calculator

Calculate exact age in years, months, days with next birthday countdown.

Aspect Ratio Calculator

Calculate aspect ratio from dimensions or find a missing dimension from a known ratio.

BMI Calculator

Calculate Body Mass Index with metric/imperial support and visual category gauge.

Compound Interest Calculator

Calculate compound interest with optional monthly contributions and year-by-year breakdown.

Date Difference Calculator

Calculate the exact difference between two dates in years, months, weeks, days, hours, and minutes.

Discount Calculator

Calculate final price and savings from original price and discount percentage.

GPA Calculator

Calculate unweighted and weighted GPA with course-by-course breakdown.

Loan/Mortgage Calculator

Calculate monthly payments, total interest, and view amortization summary.

Percentage Calculator

Calculate percentages with three modes: X% of Y, X is what % of Y, and percentage change.

Tip Calculator

Calculate the exact tip, total bill, and per-person split — with tipping percentage guidance for restaurants, delivery, and service industries.

About Calculators

Calculate percentages, BMI, loan payments, tips, discounts, and other values with simple, focused tools that give you instant results. No formulas to remember — just enter your numbers and get accurate answers.

Our calculators are designed for everyday use by students, professionals, and anyone who needs quick math without opening a spreadsheet. All calculations run locally with no data collection.

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