Calculators

Fast, private calculators for the numbers that come up every day. No account, no uploads, no tracking of your inputs.

6 tools 4 subcategories 100% local

Everyday Health Finance Math & Science

Everyday

Quick percentage and date math. 2 tools

Percentage Calculator Find a percentage of a value, calculate percentage change, and work out what percent one value is of another. Open tool Days & Age Calculator Work out an exact age in years, months, and days, or count the days between two dates. Open tool

Health

Body metrics and wellness checks. 1 tools

BMI Calculator Calculate body mass index in metric or imperial units with a clear category scale. Open tool

Finance

Loans, payments, and interest. 1 tools

Loan Calculator Estimate periodic payments, total interest, and an amortization schedule for monthly, bi-weekly, or weekly loans. Open tool

Math & Science

Scientific math and unit conversions. 2 tools

Scientific Calculator A keyboard-friendly scientific calculator with parentheses, powers, roots, trigonometry, factorials, and memory. Open tool Unit Converter Convert length, weight, temperature, area, volume, and speed with precise formatting and copyable results. Open tool

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Crypto & Security Hashes, classical ciphers, JWT inspection, and modern client-side encryption.

Browser Tools Network details and QR codes generated from your own browser.