Why Toolisk?
Most online calculators give you a single number and stop there. Toolisk is different. Every calculator includes interactive charts, detailed breakdowns, and export to Excel — the depth you expect from paid financial software, available completely free.
Whether you are planning a home loan, calculating capital gains tax, projecting your 529 savings, formatting JSON at 11pm, or editing a PDF without uploading it to a stranger's server — Toolisk has you covered. All 152 tools run entirely in your browser — your data never leaves your device.
Finance Calculators
EMI Calculator — Loan Repayment with Prepayment Strategies
Compare Reduce EMI vs Reduce Tenure side by side, view 8 interactive charts, and export the full amortization schedule to Excel.
FIRE Calculator — Financial Independence, Retire Early
Calculate your FIRE number and compare Lean, Fat, Coast, and Barista FIRE strategies with a year-by-year portfolio projection.
Capital Gains Tax Calculator — Federal + State + NIIT
Compute US short-term and long-term capital gains tax on stocks, crypto, or real estate with 2026 brackets, NIIT, Section 121 exclusion, and all 50 state rates.
RMD Calculator — Required Minimum Distributions
Compute IRS Required Minimum Distributions from Traditional IRA or 401(k) using the Uniform Lifetime Table with 30-year projections.
HSA Calculator — Triple-Tax Advantage
Project HSA balance growth and quantify federal, state, and FICA tax savings versus a taxable account over decades.
Developer Tools
41 free utilities for developers and power users — JSON formatter, JWT decoder, regex tester, SQL formatter, password generator, Base64 encoder, color converter, cron parser, and more. All client-side.
Everyday Utilities — Quick Answers for Common Tasks
5 free everyday utilities for the tasks that keep coming up — percentage calculations, unit conversions, age and date math, QR code generation, and focus timers. All instant, all browser-based.
Health Tools — Private, Browser-Based
27 free health calculators built with privacy first — your weight, height, and age never leave your browser. Start with the BMI calculator to find your Body Mass Index, WHO category, healthy weight range, and an optional BMR estimate using the Mifflin-St Jeor equation.
PDF Tools — No Upload, No Account
23 free PDF utilities that run entirely in your browser. Merge, split, compress, reorder pages, rotate, delete pages, and convert PDF to JPG or PNG — all without uploading your file to any server. Your documents stay on your device.
Image Tools — Private, Browser-Based
20 free image tools that run entirely in your browser. Compress, resize, convert, crop, rotate, and more — your photos never leave your device. No upload, no sign-up, no watermarks.
100% Client-Side — Your Data Stays Private
Unlike most finance tools that send your data to a server, Toolisk runs every calculation directly in your browser using JavaScript. Your income, loan amounts, investment figures, and tax details are never transmitted anywhere. There are no accounts, no cookies tracking your financial data, and no server-side processing. This is by design — financial information is personal, and we believe the best way to protect it is to never collect it in the first place.
Frequently Asked Questions
Are all Toolisk tools really free?
Yes. Every tool is completely free with no sign-ups, no paywalls, and no usage limits. Finance calculators include detailed reports, interactive charts, and Excel export — all at no cost.
Is my data safe on Toolisk?
Absolutely. All calculations run entirely in your browser. No data is ever sent to a server. Your salary, loan details, and investment amounts stay on your device.
Can I export calculator results to Excel?
Yes. Finance calculators include a one-click Excel export that generates a detailed .xlsx file with schedules, payment breakdowns, and summary data.
Do I need to create an account?
No. All tools work instantly without any sign-up. Your inputs are saved in your browser's local storage, so they persist between sessions on the same device.