Slope Calculator & Tools is an all-in-one construction calculator designed for contractors, builders, roofers, carpenters, engineers, surveyors, architects, landscapers, and DIY users.
Calculate slopes, roof pitch, stairs, ramps, grades, and earthwork quickly with accurate formulas, live diagrams, and support for both metric and imperial units. Whether you're on a construction site or planning a home improvement project, this app helps you work faster and with confidence.
Features
Slope Calculator
• Calculate rise, run, slope length, angle, ratio, and grade (%)
• Live geometry diagrams
• Instant updates as values change
• Metric and imperial units
Roof Pitch Calculator
• Calculate roof pitch and roof angle
• Find rafter length
• Estimate roof area
• Convert between pitch, degrees, and percentage
Stair Calculator
• Calculate total rise and run
• Determine tread depth and riser height
• Calculate stair angle
• Find stringer length
• Comfort and consistency checks
Ramp Calculator
• Calculate ramp slope and length
• Determine angle and grade
• ADA-friendly calculations
• Suitable for wheelchair ramps and accessibility projects
Grade Calculator
• Road grading
• Driveway slope
• Drainage calculations
• Landscaping and site grading
Triangle Solver
Solve triangles using:
• SSS
• SAS
• ASA
• AAS
Perfect for construction, roofing, surveying, and geometry.
Cut & Fill Calculator
Estimate excavation and fill volumes for:
• Earthworks
• Landscaping
• Site preparation
• Construction projects
Unit Converter
Convert between:
• Millimeters
• Centimeters
• Meters
• Inches
• Feet
• Yards
Feet & Inch Converter
Quickly convert:
• Feet & inches to decimal feet
• Decimal feet to feet & inches
• Imperial measurements
Save Projects
• Save calculations
• Organize projects
• Reopen previous work anytime
Designed For
• Construction
• Roofing
• Carpentry
• Engineering
• Architecture
• Surveying
• Landscaping
• Home improvement
• DIY projects
Why You'll Love It
• Fast and accurate calculations
• Professional construction tools in one app
• Live visual diagrams
• Clean and easy-to-use interface
• Supports metric and imperial units
• Dark mode support
• Save projects for later
• Works offline
Whether you're calculating a roof pitch, designing stairs, checking a ramp slope, estimating earthwork, or solving construction geometry, Slope Calculator & Tools provides the reliable calculations you need on the job site or at home.