Calculators
Percentage, fraction, average, and more - math calculators that work without a server.
Instant math utilities for every day. From simple percentage calculations to complex financial models, our calculators provide quick and accurate results. Built to be lightweight and responsive, these tools work without a server connection, giving you the answers you need immediately.
Calculate percentages three ways: X% of Y, what percent X is of Y, and percent change. Instant results in your browser.
Add, subtract, multiply, or divide two fractions. Results are automatically simplified and shown as a fraction and decimal.
Convert any number to its English word representation instantly. Supports large numbers up to quadrillions and decimals.
Quickly sum a list of numbers, calculate averages, and find min/max values. Works with lists, CSVs, and messy text.
Scan receipts with OCR to auto-fill expenses, categorize spending, and track your budget — all stored locally in your browser. No account, no upload.
Calculate how your savings or investment grows with compound interest. See the year-by-year balance breakdown instantly in your browser.
Calculate your monthly loan payment and see the full amortization schedule. Works for mortgages, car loans, and personal loans — all in your browser.
Find out exactly when you'll be debt-free and how much interest you'll pay. Compare your payment plan against the minimum payment cost.