Most Used Calculators
General Calculators
6 tools
Basic Calculator
Add, subtract, multiply, divide
Scientific Calculator
Sin, cos, log, exponents & more
Time Calculator
Add and subtract hours, minutes & seconds
Mortgage Calculator
Monthly payment & total interest
Loan Calculator
Personal loan payment & cost
VAT & Tax Calculator
Add or remove VAT at any rate
Science & Geometry
6 tools
Lifestyle
7 tools
Calorie Calculator
BMR, TDEE & daily needs
Cooking Measurements
Cups, ml, oz, grams & more
Men's Clothing Sizes
US, UK, EU & Asian conversions
Men's Shoe Sizes
US, UK, EU & Asian sizes
Women's Clothing Sizes
US, UK, EU & Asian conversions
Women's Shoe Sizes
US, UK, EU & Asian sizes
Fuel Consumption
L/100km, MPG & cost per km
Finance & Business
3 tools
From the Blog
Finance
How to Calculate Your Monthly Mortgage Payment (And What Banks Don't Tell You)
Understand amortization, interest front-loading, and LTV ratio before you sign.
Business
Gross Margin vs. Markup: What's the Difference and Why It Matters
Mixing these two up can quietly destroy your small business profitability.
Health
How Many Calories Do You Actually Need Per Day?
BMR, TDEE, activity multipliers — a data-driven guide to your daily energy needs.
Our Network
elCalculador is part of a family of free utility tools. Each site is built for a single purpose — no fluff, no sign-up required.