Forge Tools

Forge Tools is a free collection of focused calculators for engineering, automotive, electrical, fabrication, machining, radio frequency, 3D printing, and general workshop work. It replaces scattered formulas and one-off spreadsheet cells with small web tools that are quick to open and clear about the inputs they expect. The collection is meant for the garage, workbench, and job site as much as for a desk. It doesn't ask visitors to create an account or set up a project before getting an answer, and the interface is designed to remain usable on a phone. That low-friction format makes sense for measurements taken beside a vehicle, machine, electrical run, or unfinished part, where a large design application would add more setup than value.

The directory currently contains 66 calculators organized into eight technical areas. Automotive covers wheel fitment, tyre sizes, drivetrain ratios, engine geometry, brakes, and fuel calculations. Electrical and RF cover subjects such as voltage drop, Ohm's law, battery runtime, conductor resistance, antenna length, path loss, and Fresnel clearance. Mechanical and fabrication add beam, shaft, spring, bearing, hydraulic, belt, material weight, hole pattern, bend, weld, and tube calculations. Machining, 3D printing, and general geometry round out a broad set of everyday shop references. The directory shows how many tools sit in each discipline, which makes its scope easy to judge before opening an individual calculator.

Each calculator narrows the screen to the variables relevant to one problem. A wheel fitment comparison takes old and new width, offset, and spacer thickness, then reports inner clearance, outer position, and effective offset. The battery runtime tool applies voltage, capacity, usable depth of discharge, efficiency, reserve, and load to show nominal energy, usable energy, and a theoretical runtime. The speeds and feeds tool can work from cutting speed, spindle RPM, or feed rate, supports metric and imperial units, and returns RPM, feed, surface speed, and chip load. Its material presets provide conservative starting values for general-purpose carbide tooling. This pattern makes the result easier to inspect than a single opaque number because intermediate quantities and the units attached to them remain visible.

Transparency is one of the useful details. Tool pages state the method behind the calculation and include assumptions or limitations near the result. The wheel calculator explains how width is converted and how a spacer changes effective offset. It also tells the user to check tyres, brakes, suspension movement, and bodywork clearance before fitting anything. Battery runtime warns that chemistry, temperature, age, voltage sag, discharge rate, inverter losses, and management system limits can change real performance. Machining presets are described as conservative starting estimates, with reminders that tool geometry, rigidity, cooling, workholding, and manufacturer guidance still matter. These notes help a user understand where a quick estimate ends and practical verification begins.

The collection fits makers, technicians, students, mechanics, machinists, fabricators, radio enthusiasts, and engineers who need a fast check during planning or hands-on work. Search on the home page helps find a calculator by task, while the full directory supports browsing by category and sorting. Its value is strongest when someone knows the physical question but doesn't want to retrieve and rearrange the formula manually. The consistent page design also lowers the learning cost of moving from an automotive problem to an electrical or fabrication one. It can make a calculation easier to communicate because the inputs, output units, method, and caveats appear together on one page.

Forge Tools is best viewed as a reference bench, not a simulation package or engineering sign-off system. Its calculators solve individual problems, and many outputs are ideal or theoretical estimates that still need judgement, measurement, and applicable safety guidance. The tools don't combine into a saved vehicle, machine, assembly, or job, so related results have to be carried between pages by the user. There are no accounts, saved projects, team workspaces, or paid upgrades presented on the site. Every calculator is available directly in the browser for free. That simple access model, combined with visible formulas and discipline-specific units, makes the site a useful bookmark for quick checks without pretending that a browser result replaces manufacturer data or a qualified design review.