Free online calculators for everyday tasks

Fast, free tools for cooking, health, money, and more. No sign-up, no fluff.

5 Tools

100% Free

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All Tools

Air Fryer Calculator

Convert any oven recipe to air fryer time and temperature in seconds. Covers 12 food types.

°C / °F Frozen food Per food tips

Calorie Calculator

Find your daily calorie target for weight loss, maintenance, or muscle gain. Includes macros.

BMR formula Macros BMI scale

Boiled Egg Timer

Exact boiling time for soft, medium, or hard eggs based on size and starting temp. Timer built in.

Live timer 4 egg sizes Frozen option

Etsy Profit Calculator

Calculate your true Etsy profit after fees, shipping, and cost of goods. See your real margin.

Etsy fees Profit margin Shipping

Check your Body Mass Index instantly. Supports metric and imperial with clear category results.

Metric / Imperial BMI categories

CalcTools provides fast, free calculators for everyday use. Convert air fryer times, calculate calories, estimate Etsy profits, check BMI, and more — all instantly in your browser with no sign-up required.

Why use CalcTools?

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Instant answers

No loading screens, no accounts, no pop-ups. Just type and get your answer.

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Works on any device

Designed to work perfectly on your phone, tablet, or desktop browser.

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No data collected

Everything runs in your browser. We don't store or share anything you enter.