General Calculators

General Calculators — Free everyday calculators: percentage, loan payment, date, unit conversion and more, instant and in your browser.

Free everyday calculators: percentage, loan payment, date, unit conversion and more, instant and in your browser.

Available tools

Percentage Calculator — Free percentage calculator: find X% of a number, percentage increase or decrease, and what share one value is of another, with steps shown.
Simple Calculator — A compact calculator for everyday arithmetic, percentages and quick calculations.
Loan Payment Calculator — Calculate monthly loan payments, total repayment and total interest from the amount, annual rate and term. Free and instant, with no sign-up.
Love Calculator — Enter two names for a playful, deterministic compatibility score with a modern animated result.
Zodiac / Astrological Matcher — Compare two zodiac signs with a playful element-based compatibility score and match summary.
Random Name / Number Picker Wheel — Add or edit names and numbers, then spin a colorful wheel for a random pick. Free, instant and runs in your browser.
Timer with Sounds — Run a clean countdown timer with selectable chime, bell, pulse or soft alert sounds.
Date Calculator — Calculate days between dates, weekdays, ages, and add or subtract calendar offsets.
Unit Converter — Convert common length, mass, temperature, area, volume, speed and digital-storage units instantly.
Pomodoro Focus Timer — Use a configurable Pomodoro focus timer with short and long breaks plus browser-local task tracking.
World Clock — View live local times and dates across major world cities using browser Intl time-zone data.