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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.

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.

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.

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.

Battery Life Calculator

Estimate battery life, runtime, or required capacity from mAh, Wh, voltage, watts, milliamps, reserve headroom, and duty-cycle loads.

Display Calculator

Calculate display dimensions, pixel density, TV viewing distance, and projector throw setup in one screen, monitor, TV, and PPI planning tool.

JWT Decoder and Encoder

Decode, encode, verify, and explore JSON Web Tokens with local claim inspection, HS signing, signature verification, and security warnings.

Qr Code Generator

Create a free static QR code in your browser for URLs, WiFi, vCards, email, SMS, WhatsApp, phone numbers, map locations, events, or text with logo, color.

RAID Calculator

Find usable RAID capacity from drive count, drive size, hot-spare planning, and mixed-drive assumptions, then compare RAID 0, 1, 5, 6, and 10 by efficiency.

Video File Size Calculator

Estimate video file size from bitrate, codec, resolution, frame rate, audio, duration, and storage capacity, with H.264, H.265, AV1, ProRes, RAW.