Finance
Money calculators for interest, loans, tax, discounts, savings, and repayments.
Find the right calculator
Browse free tools by topic, from everyday math to money decisions.
Property
Property calculators for mortgage payments and loan-to-value, plus UK stamp duty, moving costs, and commercial property taxes.
Investing & Trading
Investment and trading calculators for returns, dividends, position sizing, and risk planning.
Health & Fitness
Practical health and fitness calculators for body metrics, calories, hydration, and wellness planning.
Math
Everyday math calculators for percentages, fractions, ratios, averages, and square roots.
Date & Time
Date and time tools for ages, date differences, and duration calculations.
Conversion & Utility
Unit converter families, popular unit conversions, and practical everyday utility calculators.
Home & Lifestyle
Everyday home, DIY, food, and lifestyle calculators for practical planning.
Bills & Utilities
Household bill calculators for energy, water, tariffs, standing charges, meter readings, and appliance running costs.
Business
Business calculators for pricing, profit, margins, productivity, and simple planning.
AI
AI calculators for token estimates, API pricing, model costs, and prompt planning.
Engineering & Science
Engineering and science calculators for formulas, measurements, and technical estimates.
Statistics
Statistics calculators for averages, variation, probability, samples, and data summaries.
Entertainment & Fun
Lightweight calculators for games, chance, hobbies, and quick curiosity checks.
Travel & Transportation
Travel and transportation calculators for trips, journey time, vehicle planning, and running costs.
Environment & Sustainability
Sustainability calculators for energy, emissions, waste reduction, and everyday impact estimates.
No categories match. Try another topic or browse all calculators.