Free Online Calculators
Fast, private, and completely free. Every calculator runs in your browser with no signup, no data collection, and 2026 official figures where taxes are involved.
Tax & Freelance
For freelancers, contractors, and independent workers.
Debt & Loans
Work out what you owe, what it costs, and how to get out faster.
Savings & Investing
Project growth and measure real returns.
Business
Pricing, margin, and the numbers behind the business.
Health
Simple screening estimates for body and nutrition.
Everyday
Quick answers to the calculations you actually do.
Why use these calculators
Every tool here runs entirely in your browser. The numbers you type never leave your device, there are no accounts, and no email is ever required. Tax figures use official 2026 IRS data drawn from Revenue Procedure 2025-32, the 2026 Form 1040-ES instructions, and Social Security Administration COLA announcements.
Estimates are for planning. Your actual tax liability depends on your complete situation, including credits, deductions, and adjustments that no simplified calculator can model. See the Disclaimer.