# MixRight

> Free probabilistic concrete mix design calculators for engineers and builders.

MixRight provides Monte Carlo simulation tools for concrete mix design, strength prediction, volume estimation, and cost optimisation. Based on established models including Abrams' law, Bolomey correction, and the Nurse-Saul maturity method. All calculations run in the browser — no signup, no backend, no data collection. Available in 11 languages.

## Calculators

- [Volume Calculator](https://mixright.org/en/volume-calculator): Calculate concrete volume for rectangular, circular, and trapezoidal shapes with waste factor and bag count
- [Mix Ratio Calculator](https://mixright.org/en/mix-ratio-calculator): Cement, sand, and aggregate proportions by weight and volume for target strength grades
- [Strength Predictor](https://mixright.org/en/strength-predictor): Monte Carlo simulation of 28-day compressive strength from water-cement ratio, cement type, and curing conditions
- [Cost Optimiser](https://mixright.org/en/cost-optimiser): Find the cheapest mix design that meets a target characteristic strength

## Blog

Technical articles on concrete engineering and mix design:

- [Understanding w/c Ratio and Why It Matters](https://mixright.org/en/blog/understanding-wc-ratio): Abrams' law, typical ranges, and durability implications
- [How Curing Temperature Affects Concrete Strength](https://mixright.org/en/blog/curing-temperature-effects): Nurse-Saul maturity method explained
- [Why Probabilistic Mix Design Beats Rules of Thumb](https://mixright.org/en/blog/probabilistic-mix-design-vs-rules-of-thumb): Monte Carlo vs deterministic approaches
- [Concrete Mix Design: The BRE Method Explained](https://mixright.org/en/blog/bre-method-concrete-mix-design): British standard mix design procedure
- [What is Characteristic Strength? EN 206 Simplified](https://mixright.org/en/blog/characteristic-strength-en206): Statistical basis of concrete strength classes
- [OPC vs PPC vs PSC: Which Cement Type to Use](https://mixright.org/en/blog/opc-vs-ppc-vs-psc): Cement type selection guide
- [Concrete Cost Optimisation: A Practical Guide](https://mixright.org/en/blog/concrete-cost-optimisation): Balancing cost against strength requirements
- [How to Calculate Concrete Volume for Any Shape](https://mixright.org/en/blog/concrete-volume-calculation): Formulas and worked examples

## Methodology

- [About & Methodology](https://mixright.org/en/about): Abrams' law, Bolomey correction, Nurse-Saul maturity method, and Monte Carlo simulation explained

## Languages

Available in: English, Spanish, Hindi, Portuguese, Arabic, Indonesian, Chinese, Vietnamese, Turkish, Thai, and Malay.

## Citation

When referencing this site, please attribute to MixRight (https://mixright.org).