4 subcategories · 17 calculators
Technology
Free technology calculators for networking, password generation, hash tools, and developer workflows.
Subcategories
Networking
Networking tools for IP ranges, masks, and subnet planning.
Security
Password, hash, and cryptographic helper tools.
Identifiers
UUID, ObjectId, sortable ID, and random identifier generators.
Data
Data encoding, format conversion, and developer data tools.
Popular tools
Technology / Data
3D Printing Cost Calculator
Estimate 3D printing cost and quote price from filament, waste, failed-print risk, electricity, machine wear, labour, packaging, platform fees, markup, profit.
Technology / Data
AI ROI Calculator
Estimate AI subscription ROI with rollout cost, recurring operating cost, break-even hours, payback, and first-year net value from time saved per user.
Technology / Data
AI Token Cost Calculator
Estimate monthly AI API spend from prompt tokens, completion tokens, request volume, prompt caching, retry overhead, budget guardrails, and per-token pricing.
Technology / Data
Barcode Generator
Create a free barcode online for Code 128, UPC-A, EAN-13, EAN-8, Code 39, or ITF-14 with client-side generation, check digit validation, SVG and PNG download.
Technology / Data
Battery Life Calculator
Estimate battery life, runtime, or required capacity from mAh, Wh, voltage, watts, milliamps, reserve headroom, and duty-cycle loads.
Technology / Security / Hash & Checksum Tools
Bcrypt Hash Generator
Generate bcrypt password hashes with configurable work factor, optional custom salts, password verification, local timing.