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Grade Calculator
Calculate letter grades and percentages
How It Works
Calculate the grade or slope of an incline based on rise and run measurements.
A grade calculator determines the steepness of an incline, expressed as a percentage, ratio, or angle. Grade is commonly used in construction, road design, and accessibility ramp planning. The percentage grade equals the rise divided by the run multiplied by 100. A 100% grade corresponds to a 45° angle. The ratio form (e.g., 1:12) is common in accessibility guidelines such as ADA ramp requirements.
Results
Enter values to see results
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Quick Tips
- • Results update automatically as you type
- • Use Tab to navigate between fields
- • Press Enter to calculate
Frequently Asked Questions
How does the Grade Calculator work?
Simply enter your values into the input fields above. The Grade Calculator uses standard formulas to compute results instantly as you type or click.
Is the Grade Calculator free?
Yes, this calculator is completely free to use. No registration, no hidden fees, no limits.
How accurate are the results?
Results are computed using industry-standard mathematical formulas. For critical decisions, we recommend consulting a professional.
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