Disclaimer
Know what a tool result can—and cannot—tell you.
Last updated: 7 October 2026
Website operator
This website is operated by Muhammad Hanif under the public name Free Tool Box. Operating country: United States.
General information and estimates
Free Toolboxs provides tools and explanations for checking figures and completing everyday tasks. Results depend on the inputs, formula, units and assumptions shown on each page. They are not official determinations, guarantees or a substitute for advice tailored to your circumstances.
Loans, pay and other financial figures
Loan and auto-loan results are estimates based on the entered rate and payment assumptions. They are not offers of credit or confirmation of approval. Taxes, fees, lender rules, timing and contract terms can change an actual payment. Pay estimates are not an official payroll statement. Confirm financial decisions with your lender, employer or adviser.
Calories and health
The calorie calculator estimates adult energy needs from the equation and activity assumptions described on its page. It does not diagnose a condition, prescribe a diet or account for every medical circumstance. Pregnancy, illness, growth, medication and other factors can affect needs. Seek appropriate professional guidance for a health or nutrition decision.
Zakat and inheritance
These tools support only the scenarios and assumptions stated on their pages. Zakat eligibility, deductible liabilities, nisab, hawl and inheritance shares can depend on facts and scholarly rulings. An inheritance distribution may also require legal procedures. Confirm the calculation with a qualified scholar and, where relevant, a legal professional before paying or distributing assets.
Grades, GPA and calendar calculations
Schools and institutions may use different grading scales, credit rules, rounding and repeated-course policies. Date and business-day results depend on the selected boundaries and holidays you provide. Use the institution’s or responsible organization’s official records for formal decisions.
Paint, solar and electricity estimates
Paint coverage depends on the actual product, surface and application. Solar output and payback depend on site conditions, system design, tariffs and the assumptions you enter. Electricity costs depend on measured use and the tariff structure; estimates may exclude standing charges and other bill components. Verify product specifications and obtain a professional assessment where necessary.
File conversion and compression
File tools can change quality, format or document features. Compression of scanned PDFs may create image-based pages and remove selectable text, interactive forms and digital signatures. Keep the original and inspect the complete output before sharing or replacing it. A successful download does not certify security, accessibility or legal validity.
CVs, letters and external links
A CV download does not guarantee a job interview or compatibility with every hiring system. Future Letter does not automatically email your letter later. Links to outside sources are provided for context; their presence does not establish a partnership or endorsement. Third-party pages may change after a guide is written.
Check important answers
If an output looks wrong, check every input, unit and setting and compare a simple example with the method explained on the page. For a high-stakes decision, obtain independent confirmation. You can return to the tool directory to find the relevant instructions.