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This tool applies a standard formula from the relevant domain. The computation is deterministic — given the same inputs, the result is always identical. The formula accounts for the primary variables that determine the output.
Mohs scale: 1 (talc) to 10 (diamond)The calculation requires: Scratches Gypsum (H=2)?, Scratches Calcite (H=3)?, Scratches Quartz (H=7)?. Each parameter contributes to the final result according to the formula above. Accuracy depends on the precision of your input measurements.
Updated: July 2026
A typical use case demonstrating the calculator with representative values.
→ Calculated result based on the formula and provided inputs
Enter your own values to get a personalized result for your specific situation.
→ Result calculated from your specific input values
When a formula combines multiple measurements, all inputs must use compatible units. Convert everything to the same system (metric or imperial) before calculating.
This calculator uses the formula shown. Real-world results may vary due to factors not captured by the model. Use the result as an estimate and verify with domain-specific standards.
Identify approximate Mohs hardness from scratch test results against reference minerals. Free mineral hardness identifier tool for mineral, hardness, and more. It applies the calculation formula (Mohs scale: 1 (talc) to 10 (diamond)). For example: scratches gypsum only → ~2 — A typical use case demonstrating the calculator with representative values.