Portfolio & Product 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.
35 free tools 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 toolIncome Tax Estimator
Estimate your Indian income tax for FY 2025-26 and FY 2026-27 under the new or old regime — with slabs, the Section 87A rebate, surcharge, and 4% cess worked out for you.
Open toolPassword Generator
Generate secure random passwords with your choice of length and character sets, using the Web Crypto API.
Open toolRecent launches
Fresh out of the lab.
GST Calculator
Add GST to a net amount or extract it from a GST-inclusive price, with the CGST/SGST split shown.
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 any number of random strings at a chosen length from the character sets you pick — lowercase, uppercase, numbers, and symbols — and copy them one by one or all at once.
Open tool