A complete calculator suite for machinists — turning, milling, drilling, threading (UN, Metric, Buttress, and NPT with G76 CNC toolpath), unit conversion, GD&T, and more. Runs in any browser with no install required, or download the Android app for offline use on the floor.
Every module runs in imperial or metric, right from your phone or browser.
Quick conversions for length, speed, volume flow, power, pressure, angle, temperature, weight, volume, torque, force, and taper angle — plus degree/D-M-S conversion and a full drill size reference.
RPM, cutting speed, feed per revolution, feed per minute, material removal rate, cutting power, surface roughness Ra, facing time, and turning cycle time — all in imperial or metric.
RPM, cutting speed, feed per tooth, feed per minute, material removal rate, cutting power, effective cutting diameter (ball-nose), chip thinning (radial & ball-nose), scallop height, engagement angle, approach & overtravel, arc feed rate, chamfer mill depth, keyway depth, bolt circle positions, and tap/thread milling feed rate.
RPM, cutting speed, feed rates, material removal rate, drilling time, thrust force, torque, drill point length, countersink depth, dwell time, and tap drill sizing across Inch Unified, Metric, BSW, BSF, BA, and ME standards — including thread-forming taps — by target thread engagement %.
UN (classes 1A/B–3A/B), Metric (6g/6H), and Buttress (2A/2B) — tolerance limits, G76 CNC toolpath values, and three-wire measurement. Plus NPT tapered pipe threads per ASME B1.20.1 — taper dimensions, G76 toolpath for external and internal (tapped-hole) threads, and a real-proportions taper diagram.
Right-triangle solver — finds all sides and angles from any two known values, with a live diagram.
Sine bar stack height & angle solving, and true position with MMC/LMC/RFS bonus tolerance.
ANSI B4.1 shaft & housing fit-class limits (clearance, transition, interference) from basic diameter; material weight & price estimator for round, square, hex, tube, plate, and ring stock across common alloys; and ISO carbide insert decoder (e.g. CNMG120408 → shape, clearance, tolerance, size, corner radius).
Open it on any device — phone, tablet, or desktop. No account, no download, no install. Bookmark it and it's always there.
Also available as an Android app for full offline use on the shop floor.
Results are theoretical — always verify calculations meet your job's requirements before relying on them.
