How the Slope & Gradient works
Gradient % = Rise ÷ Run × 100; angle = atan(Rise ÷ Run).
How to use this calculator
- Sign up free and verify your email to unlock the calculator.
- Choose Metric (m, mm, m³, kg) or Imperial (ft, in, cft, lb) units.
- Enter the rise, run.
- Results update instantly — read the quantities in the Results panel.
- Add a wastage allowance and confirm against your drawings and specifications before ordering.
Typical uses
Ramps, drains, roofs and road cambers.
Assumptions & limitations
Results are planning estimates based on standard assumptions for earthwork & site work. They do not replace structural design, site measurement or project specifications. Material densities, wastage and mix proportions vary by region and supplier.
Frequently asked questions
- How does the Slope & Gradient work?
- Gradient % = Rise ÷ Run × 100; angle = atan(Rise ÷ Run).
- Can I use the Slope & Gradient in feet and inches?
- Yes. Switch to Imperial and enter feet, inches, square feet or pounds — the calculator converts automatically and shows results in imperial units.
- When should I use the Slope & Gradient?
- Ramps, drains, roofs and road cambers.
- Is this construction calculator free?
- Yes. All CM PRO construction calculators are free — you only need to sign up and verify your email.
Related searches: slope calculator, gradient percentage, slope angle calculator.
