Yes! All our calculation tools, including Rebar Weight, Concrete Volume, and CNC Calculators, are 100% free. We generate revenue through ads so you don't have to pay a subscription fee.

No. We take your privacy seriously. All calculations are performed locally in your browser. We do not save, store, or view the data you enter into the tools.

Yes. Most of our tools (like the Unit Converter and Slope Calculator) support both systems. For specific tools like Rebar Weight, we currently use the Metric system (kg/m) as it is the global engineering standard.

No, you do not need to sign up or log in. Our tools are designed for instant access without any barriers.

Yes, you can use our tools to verify your manual calculations. However, for official academic submissions, we recommend showing your manual work steps (formulas) which are provided under each calculator.

We appreciate your feedback! If you notice a calculation error or a glitch, please contact us via our About Us page. We usually fix reported bugs within 24 hours.

Absolutely. Our platform is fully optimized for smartphones and tablets, allowing you to perform complex calculations directly from the construction site.

We use standard formulas (e.g., W = D²/162) and industry constants. However, results are for estimation only. Always consult a professional structural engineer for final projects.

Dry materials shrink by about 54% when water is added. To obtain 1 m³ of wet concrete, you need 1.54 m³ of dry materials. Our calculator accounts for this automatically.

We support common machining materials including Aluminum (6061/7075), Low Carbon Steel, Stainless Steel (304/316), Cast Iron, and Plastics.

We use the formula: Feed Rate = RPM × Flutes × Chip Load. This ensures efficient cutting without breaking the tool.

Yes! Check our Blog for guides on "Top Programming Languages for Engineers" and technical tutorials to boost your career.