Precision tools for
3D & additive manufacturing.
3dcalcs.com offers free, fast 3D printing calculators and tools: print cost, filament conversion, printer calibration, G-code and STL analysis, plus troubleshooting guides. Multilingual, client-side, zero signup.
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Featured Flagship Tools
Our most capable browser-native manufacturing utilities — instant client-side 3D rendering, direct USB printer control, and commercial print cost modeling.
3D Print Cost & Pricing Calculator
Calculate material cost, electricity, machine wear, multi-color purge waste, and marketplace seller fees (Etsy, Shopify, eBay) with profit margins.
Client-Side 3D File Viewer & Instant Quote Estimator
View and render 3D files (.STL, .OBJ, .GLB, .3MF) directly in your browser with Three.js and calculate exact volume, filament weight, and production cost client-side.
G-Code Analyzer & 3D Toolpath Viewer
Inspect G-code files locally in your browser. View interactive layer-by-layer toolpaths, print time, temperatures, and filament consumption.
Web Serial Direct 3D Printer Controller & G-Code Sender
Connect your 3D printer directly over USB via browser Web Serial API. Send G-code, jog axes, preheat, calibrate E-steps, and stream prints line-by-line.
Remaining Filament on Spool Calculator
Estimate usable grams and meters left on your spool using verified empty spool tare weights for Bambu Lab, Prusament, eSun, Hatchbox, and more.
Extruder E-Steps Calibration Calculator (Marlin)
Calibrate your Marlin extruder stepper motor steps/mm with exact M92 E and M500 commands to eliminate under-extrusion and over-extrusion.
All Calculators & Reference Tools (22)
Complete directory of precision calculators for calibration, slicing, kinematics, and hardware tolerances.
3D Print Cost & Pricing Calculator
Calculate material cost, electricity, machine wear, multi-color purge waste, and marketplace seller fees (Etsy, Shopify, eBay) with profit margins.
Filament Weight ↔ Length Converter
Convert between filament weight in grams and length in meters for 1.75mm and 2.85mm across PLA, PETG, ABS, TPU, and custom densities.
Remaining Filament on Spool Calculator
Estimate usable grams and meters left on your spool using verified empty spool tare weights for Bambu Lab, Prusament, eSun, Hatchbox, and more.
SLA / Resin 3D Print Cost Calculator
Calculate UV photopolymer resin cost per print, IPA washing alcohol consumption, curing station power, and total prints per bottle.
Extruder E-Steps Calibration Calculator (Marlin)
Calibrate your Marlin extruder stepper motor steps/mm with exact M92 E and M500 commands to eliminate under-extrusion and over-extrusion.
Klipper Rotation Distance & Gear Ratio Calculator
Calculate new rotation_distance for Klipper printer.cfg, including gear ratio mode (driven:driver) for BMG, Titan, Voron StealthBurner, and Orbiter.
Flow Rate / Extrusion Multiplier Calculator
Tune extrusion multiplier using either the OrcaSlicer / Bambu Studio pass modifier or the hollow calibration cube wall thickness method.
Max Volumetric Flow & Print Speed Calculator
Determine the maximum safe printing speed (mm/s) based on your hotend melt rate (mm³/s), layer height, and line width without skipping steps.
Pressure Advance (Klipper) & Linear Advance (Marlin) Calculator
Calculate exact advance values from calibration test towers and generate copy-paste SET_PRESSURE_ADVANCE and M900 K-factor commands.
Lead Screw Z-Steps & Belt Steps Calculator
Compute theoretical steps/mm and Klipper rotation_distance for TR8 lead screws, GT2 timing belts, and custom stepper motor configurations.
Filament Shrinkage & Dimensional Accuracy Calculator
Compensate for thermal polymer shrinkage across PLA, PETG, ABS, and Nylon with exact model scaling percentages for your slicer.
Client-Side 3D File Viewer & Instant Quote Estimator
View and render 3D files (.STL, .OBJ, .GLB, .3MF) directly in your browser with Three.js and calculate exact volume, filament weight, and production cost client-side.
3D Model Scale & Unit Converter (Inch ↔ mm)
Convert between inches and millimeters (2540% scale factor), miniature scale ratios (1:12, 1:64), and auto-fit models to your build plate.
Nozzle Size vs. Layer Height & Magic Numbers Optimizer
Find safe layer height and line width ranges for 0.2mm to 1.0mm nozzles, plus full-step "magic numbers" to eliminate Z-banding artifact lines.
G-Code Analyzer & 3D Toolpath Viewer
Inspect G-code files locally in your browser. View interactive layer-by-layer toolpaths, print time, temperatures, and filament consumption.
Hole, Shaft & Tolerance Compensation Calculator
Compensate for printed hole shrinkage and plastic contraction in CAD or slicer X-Y hole compensation for press-fit, sliding, or clearance pins.
Fastener & Heat-Set Insert Hole Size Reference
Verified hole diameter and pocket depth dimensions for M2, M2.5, M3, M4, M5, M6 heat-set inserts, tap holes, and clearance screws.
Web Serial Direct 3D Printer Controller & G-Code Sender
Connect your 3D printer directly over USB via browser Web Serial API. Send G-code, jog axes, preheat, calibrate E-steps, and stream prints line-by-line.
Klipper Input Shaper Resonance & Max Acceleration Optimizer
Calculate optimal Klipper input shaper filters (MZV, EI, 2HUMP_EI), filter durations, and safe maximum accelerations for your printer resonance frequency.
Klipper Bed Screw Tilt & SCREWS_TILT_CALCULATE Converter
Convert Klipper SCREWS_TILT_CALCULATE clock-face outputs (e.g. CW 01:15) into exact rotation degrees and physical Z millimeter adjustments for M3, M4, and M5 screws.
3D Printer Commercial ROI & Break-Even Calculator
Calculate your 3D printer commercial investment payback timeline, monthly net profit, break-even unit sales volume, and 1-year return on investment.
Minimum Layer Time & Cooling Speed Calculator
Prevent melting, drooping, and heat radiation damage on small print features. Calculates required slicer speed slowdown, fan speeds, and prime tower needs.
Printer Hardware Database & Filament Material Properties
Popular Quick Answers
Immediate numeric answers, spool measurements, and material conversions for makers.
Filament Material Properties
Densities, extrusion temperatures, and thermal characteristics for PLA, PETG, ABS, TPU, and Nylon.
Printer Hardware Database
Bed volumes, max temperatures, and kinematics for 50+ popular 3D printers.