CoilCalc vs RTF Converter

CoilCalc is a precise and intuitive tool for calculating technical coil and wire parameters. The app helps users determine accurate values for resistance, current, power output and coil length based on material type, wire gauge, diameter settings and wrap count. Designed for engineering tasks, educational environments and technical projects, CoilCalc provides clear results through a modern and easy to use interface. All calculations are processed instantly, making it an efficient tool for anyone working with coil geometry, wire characteristics or electrical values. Key Features • Accurate calculations for resistance, current, power and coil length • Supports multiple coil configurations such as single, dual and quad • Adjustable parameters for material, wire gauge, inner and outer diameter and wrap count • Instant results for technical and educational use • Clean and modern interface designed for clarity and speed • Built in formulas and explanations to help users understand the calculations • Fully localized in English and German • Works offline and requires no account CoilCalc offers a reliable and accessible way to perform coil and wire calculations, making it useful for training, engineering work and personal technical projects.

RTF Converter is the fastest and most complete document conversion toolkit for iPhone and iPad. Whether you need to turn an RTF file into a polished PDF, compress a large document, or batch-convert images into a single PDF, everything is just one tap away — no desktop required. The most complete file conversion toolkit for iPhone and iPad — 50+ tools, all on-device, all private. Whether you're a student, professional, or someone who receives files in the wrong format, RTF Converter handles it in seconds. No cloud uploads. No login required. No subscription needed to get started. RTF TOOLS RTF to PDF — Convert rich text files into polished PDFs RTF to Text — Extract clean plain text from any RTF file Text to RTF — Create RTF documents from plain text Image to RTF — Turn photos into editable RTF documents PDF to RTF — Convert PDFs back into editable rich text CONVERT TO PDF Image to PDF — Combine photos into a single PDF JPG to PDF PNG to PDF HEIC to PDF — Convert iPhone photos directly HEIF to PDF GIF to PDF TIFF to PDF WebP to PDF Word to PDF — Convert DOCX files perfectly Excel to PDF — Preserve spreadsheet formatting PPT to PDF — Convert slides with layouts intact Text to PDF — Turn plain text into clean PDF documents CONVERT FROM PDF PDF to Word — Create editable DOCX files in seconds PDF to Excel — Extract tables into spreadsheets PDF to PPT — Convert PDFs back into presentations PDF to JPG — Export every page as an image PDF to PNG — High-quality transparent exports IMAGE CONVERSION PNG ↔ JPG JPG ↔ WebP PNG ↔ WebP HEIC → JPG / PNG HEIF → JPG / PNG TIFF → JPG / PNG GIF → JPG / PNG WebP → GIF / TIFF PDF TOOLS Compress PDF — Reduce file size without quality loss Merge PDFs — Combine multiple PDFs into one Lock PDF — Password-protect sensitive documents Unlock PDF — Remove passwords from PDFs you own Watermark PDF — Add text or image watermarks Convert to ZIP — Package files for easy sharing WHY USERS CHOOSE RTF CONVERTER • 100% On-Device — Files never leave your iPhone or iPad. No server uploads, no privacy risks, and no internet required for most tools. • Instant Results — Conversions complete in seconds, even for large multi-page documents. • History & Search — Every converted file is saved automatically, grouped by date, and fully searchable. Preview, share, or delete with a tap. • One-Tap Share — Send results via Mail, WhatsApp, AirDrop, Dropbox, Google Drive, or any app using the standard iOS share sheet. • No Ads — No banners, no pop-ups, no distractions. • iPad Ready — Full native iPad layout with larger grids and optimized spacing. PRO Upgrade to Pro to unlock unlimited conversions and access every tool without restrictions. Start free — no commitment required. Terms: https://stechza.org/terms Privacy: https://stechza.org/privacy