Math, Science & Engineering
A complete collection of scientific and engineering calculation tools for students, educators, professionals, and enthusiasts. From basic unit conversions to advanced physics simulations, financial calculations, and specialized engineering tools. Solve equations, convert measurements, calculate loan payments, simulate physical phenomena, balance chemical equations, design electrical circuits, and estimate construction costs—all with accuracy and ease.
Calculate your ideal freelance hourly, daily, and monthly rates based on income goals, work schedule, expenses, and taxes.
Estimate total project costs by adding team members with hourly rates, fixed expenses, contingency buffer, profit margin, and tax.
Calculate how much gravel, mulch, sand, or soil you need for landscaping projects. Supports multiple shapes, materials, and unit systems.
Calculate the exact number of bricks, mortar, cement, and sand needed for your construction project with support for walls, openings, and pillars.
Calculate fence materials including posts, rails, pickets, concrete, and hardware for wood, chain-link, vinyl, and metal fences.
Calculate optimal stair dimensions including riser height, tread depth, angle, stringer length, and check building code compliance instantly.
Calculate the exact number of drywall sheets needed for your walls and ceilings. Includes openings deduction, waste factor, accessories estimate, and cost breakdown.
Calculate board feet for lumber and logs. Estimate material costs with waste factor and manage your project's material list.
Calculate flooring materials needed for any room shape. Estimate pieces, boxes, costs, and skirting length.
Calculate roof pitch, angle, and slope multiplier from rise and run measurements, pitch ratio, or angle input.
Calculate the exact number of tiles needed for your floor or wall project, with grout spacing, waste percentage, and cost estimation.
Calculate how much paint you need for interior or exterior projects. Accounts for room dimensions, openings, paint type, coats, waste, and provides multi-room summaries.