Every tool in one place
34 focused utilities across 5 categories. Each one runs instantly in your browser — no accounts, no uploads, no waiting.
34 tools
PSU / PC Power Calculator
Estimate total system wattage and a recommended PSU size.
RAM Latency Calculator
Convert memory speed and CAS latency into true nanoseconds.
Display Bandwidth Calculator
Check if a resolution, refresh rate and color depth fit your cable.
RAID Capacity Calculator
Usable capacity and fault tolerance across RAID levels.
Storage & File Size Calculator
Convert between bytes, KB/MB/GB and KiB/MiB/GiB.
Local LLM VRAM Calculator
Estimate VRAM needed to run a model at a given quantization.
Subnet / CIDR Calculator
Network, broadcast, host range and mask from any CIDR.
Download / Upload Time Calculator
How long a transfer takes at a given connection speed.
JSON / Data Toolkit
Validate, format, minify and inspect JSON instantly.
Regex Tester
Test regular expressions with live matches and groups.
Base64 / URL / HTML Encoder-Decoder
Encode and decode Base64, URL and HTML entities.
Hash / Checksum Tool
Compute SHA-256/384/512 for text or files, plus CRC32 for text.
Unix Timestamp / Date Converter
Convert between Unix time and human-readable dates.
Cron Expression Builder
Build and read 5-field cron schedules in plain English.
Image Metadata / EXIF Viewer
Inspect image EXIF and metadata without uploading.
Image Compressor / Resizer
Resize and compress images locally with a canvas.
Text Difference Checker
Compare two texts and highlight what changed.
Duplicate / Text Cleanup Tool
Dedupe, sort, trim and clean up lists of text.
Password / Entropy Calculator
Measure password strength in bits of entropy.
AI Token & API Cost Calculator
Estimate API costs from token counts and your own pricing.
Word & Character Counter
Count words, characters, lines and reading time as you type.
Case Converter
Switch text between upper, lower, title and sentence case.
Duplicate Line Remover
Keep the first occurrence of each line in a list.
Sort Lines
Sort a pasted list A–Z, Z–A or in natural number order.
URL Slug Generator
Turn a title into a clean URL path segment.
Lorem Ipsum Generator
Generate one to twenty paragraphs of placeholder copy.
Base64 Encoder & Decoder
Encode or decode UTF-8 text as Base64 locally.
URL Encoder & Decoder
Escape URL components and decode percent-encoded text.
UUID v4 Generator
Generate random UUIDs with the browser crypto API.
JWT Decoder
Inspect token header and payload without verifying a signature.
Percentage Calculator
Find a percent of a number or measure a percent change.
Date Difference Calculator
Count the calendar days and weeks between two dates.
Aspect Ratio Calculator
Reduce dimensions to a ratio and scale proportionally.
URL Parser
Break a URL into host, path, query and fragment.
Browse by category
PC & Hardware
Size a power supply, plan storage, and reason about memory and bandwidth.
Networking & Internet
Plan subnets and estimate transfer times without guesswork.
Developer & Data
Format, test, encode and convert the data developers touch every day.
Files, Images & Text
Inspect, transform and clean up files and text — all in your browser.
Security & AI Utilities
Measure password strength and estimate API costs with full transparency.