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A collection of useful online tools and apps — fast, free, and privacy-friendly. No popups. No signups. No friction.
Popular categories
Browse allMath & Numbers
Percentages, ratios, primes, conversions.
Money & Finance
Interest, loans, discounts, tips.
Text & Writing
Word counts, case conversion, cleanup.
Unit Converters
Length, mass, temperature, data units.
Calculators
Quick, no-frills calculators for finance, health, and everyday math.
Text Tools
Fast, no-account utilities for editing and cleaning text.
Generators
Quick, secure generators for UUIDs, passwords, and placeholder text.
Date & Time
Handy time utilities that work offline in your browser.
Trending tools
Percentage Calculator
Math & Numbers
Discount Calculator
Sale price, savings, and final total.
Math & Numbers
Roman Numerals ⇄ Integer
Convert both ways with validation.
Math & Numbers
Mortgage Calculator
Monthly payment (P&I), loan amount, and estimated total with taxes/insurance.
Money & Finance
Loan Calculator
Payment, total interest, and payoff time for any loan.
Money & Finance
Compound Interest
Future value with monthly contributions and compounding.
Money & Finance