Tools & Games Hub
Small, fast tools and games, built to just work.
SK Play Labs is where we build and ship the everyday calculators, converters, developer helpers, and browser games we keep wanting ourselves.
90+ free tools & games live now — no signup, and everything runs in your browser.
Most used tools
The ones people reach for the most.
Calculator
A full calculator with correct order-of-operations, parentheses, scientific functions, memory keys, a saved history tape, and full keyboard support.
Open toolPassword Generator
Generate secure random passwords with your choice of length and character sets, using your browser's Web Crypto API — nothing is ever sent anywhere.
Open toolJSON Diff
Compare two JSON objects and get a clear list of the fields that were added, removed, or changed — with full paths, so you spot every difference at a glance.
Open toolRecent launches
Fresh out of the lab.
GST Calculator
Add GST to a net amount or pull it out of a GST-inclusive price, with the CGST/SGST split shown — handy for Indian invoices and quick price checks.
Open toolLoan Comparison
Put two to four loan offers next to each other — amount, rate, and tenure — and instantly see which one costs the least in EMI and total interest.
Open toolRandom String Generator
Generate random strings at any length from the character sets you choose — lowercase, uppercase, numbers, symbols — copy them one at a time or all at once.
Open tool